82_FR_61477 82 FR 61230 - Endangered and Threatened Wildlife and Plants; Listing the Yangtze Sturgeon as an Endangered Species

82 FR 61230 - Endangered and Threatened Wildlife and Plants; Listing the Yangtze Sturgeon as an Endangered Species

DEPARTMENT OF THE INTERIOR
Fish and Wildlife Service

Federal Register Volume 82, Issue 247 (December 27, 2017)

Page Range61230-61241
FR Document2017-27954

We, the U.S. Fish and Wildlife Service (Service), announce a proposed rule and a 12-month finding on a petition to list the Yangtze sturgeon (Acipenser dabryanus) as an endangered species under the Endangered Species Act of 1973, as amended (Act). Loss of individuals due to overharvesting on the Yangtze River is the main factor that contributed to the historical decline of the species. Despite conservation efforts, this species is still currently in decline due primarily to the effects of dams and bycatch. If we finalize this rule as proposed, it would extend the Act's protections to this species. We seek information from the public on this proposed rule and the status review for this species.

Federal Register, Volume 82 Issue 247 (Wednesday, December 27, 2017)
[Federal Register Volume 82, Number 247 (Wednesday, December 27, 2017)]
[Proposed Rules]
[Pages 61230-61241]
From the Federal Register Online  [www.thefederalregister.org]
[FR Doc No: 2017-27954]


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DEPARTMENT OF THE INTERIOR

Fish and Wildlife Service

50 CFR Part 17

[Docket No. FWS-HQ-ES-2017-0047; 4500090024]
RIN 1018-BC83


Endangered and Threatened Wildlife and Plants; Listing the 
Yangtze Sturgeon as an Endangered Species

AGENCY: Fish and Wildlife Service, Interior.

[[Page 61231]]


ACTION: Proposed rule.

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SUMMARY: We, the U.S. Fish and Wildlife Service (Service), announce a 
proposed rule and a 12-month finding on a petition to list the Yangtze 
sturgeon (Acipenser dabryanus) as an endangered species under the 
Endangered Species Act of 1973, as amended (Act). Loss of individuals 
due to overharvesting on the Yangtze River is the main factor that 
contributed to the historical decline of the species. Despite 
conservation efforts, this species is still currently in decline due 
primarily to the effects of dams and bycatch. If we finalize this rule 
as proposed, it would extend the Act's protections to this species. We 
seek information from the public on this proposed rule and the status 
review for this species.

DATES: We will consider comments and information received or postmarked 
on or before February 26, 2018. Comments submitted electronically using 
the Federal eRulemaking Portal (see ADDRESSES, below) must be received 
by 11:59 p.m. Eastern Time on the closing date. We must receive 
requests for public hearings, in writing, at the address shown in FOR 
FURTHER INFORMATION CONTACT by February 12, 2018.

ADDRESSES: Document availability: This finding is available on the 
internet at http://www.regulations.gov at Docket No. FWS-HQ-ES-2017-
0047.
    Written comments: You may submit comments by one of the following 
methods:
    (1) Electronically: Go to the Federal eRulemaking Portal: http://www.regulations.gov. In the Search box, enter FWS-HQ-ES-2017-0047, 
which is the docket number for this rulemaking. Then, in the Search 
panel on the left side of the screen, under the Document Type heading, 
click on the Proposed Rules link to locate this document. You may 
submit a comment by clicking on ``Comment Now!''
    (2) By hard copy: Submit by U.S. mail or hand-delivery to: Public 
Comments Processing, Attn: FWS-HQ-ES-2017-0047; U.S. Fish and Wildlife 
Service, MS: BPHC, 5275 Leesburg Pike, Falls Church, VA 22041-3803.
    We request that you send comments only by the methods described 
above. We will post all comments on http://www.regulations.gov. This 
generally means that we will post any personal information you provide 
us (see Public Comments, below, for more information).

FOR FURTHER INFORMATION CONTACT: Janine Van Norman, Branch of Foreign 
Species, Ecological Services, U.S. Fish and Wildlife Service, MS: ES, 
5275 Leesburg Pike, Falls Church, VA 22041-3803; telephone, 703-358-
2171; facsimile, 703-358-2499. If you use a telecommunications device 
for the deaf (TDD), call the Federal Relay Service at 800-877-8339.

SUPPLEMENTARY INFORMATION: 

Information Requested

Public Comments

    Our intent, as required by the Act (16 U.S.C. 1531 et seq.), is to 
use the best available scientific and commercial data as the foundation 
for all endangered and threatened species classification decisions. 
Further, we want any final rule resulting from this proposal to be as 
accurate and effective as possible. Therefore, we invite the range 
country, governmental agencies, the scientific community, industry, and 
other interested parties to submit comments regarding this proposed 
rule. Comments should be as specific as possible.
    Before issuing a final rule to implement this proposed action, we 
will take into account all comments and any additional relevant 
information we receive. Such communications may lead to a final rule 
that differs from our proposal. For example, new information or 
analysis may lead to a threatened status instead of an endangered 
status for this species, or we may determine that this species does not 
warrant listing based on the best available information when we make 
our determination. All comments, including commenters' names and 
addresses, if provided to us, will become part of the administrative 
record. For this species, we particularly seek comments concerning:
    (1) The species' biology, ranges, and population trends, including:
    (a) Biological or ecological requirements of the species, including 
habitat requirements for feeding, breeding, and sheltering;
    (b) Genetics and taxonomy;
    (c) Historical and current range, including distribution patterns;
    (d) Historical and current population levels, and current and 
projected trends; and
    (e) Past and ongoing conservation measures for the species, its 
habitat, or both.
    (2) Factors that may affect the continued existence of the species, 
which may include habitat modification or destruction, overutilization, 
disease, predation, the inadequacy of existing regulatory mechanisms, 
or other natural or manmade factors.
    (3) Biological, commercial trade, or other relevant data concerning 
any threats (or lack thereof) to the species and existing regulations 
that may be addressing those threats.
    (4) Additional information concerning the historical and current 
status, range, distribution, and population size of the species, 
including the locations of any additional populations of the species.
    Please include sufficient information with your submission (such as 
scientific journal articles or other publications) to allow us to 
verify any scientific or commercial information you include.
    Please note that submissions merely stating support for or 
opposition to the action under consideration without providing 
supporting information, although noted, will not be considered in 
making a determination, as section 4(b)(1)(A) of the Act directs that 
determinations as to whether any species is an endangered or threatened 
species must be made ``solely on the basis of the best scientific and 
commercial data available.''
    You may submit your comments and materials concerning this proposed 
rule by one of the methods listed in ADDRESSES. We request that you 
send comments only by the methods described in ADDRESSES.
    If you submit information via http://www.regulations.gov, your 
entire submission--including any personal identifying information--will 
be posted on the website. If your submission is made via a hardcopy 
that includes personal identifying information, you may request at the 
top of your document that we withhold this information from public 
review. However, we cannot guarantee that we will be able to do so. We 
will post all hardcopy submissions on http://www.regulations.gov.
    Comments and materials we receive, as well as supporting 
documentation we used in preparing this proposed rule, will be 
available for public inspection on http://www.regulations.gov, or by 
appointment, during normal business hours, at the U.S. Fish and 
Wildlife Service, Headquarters Office (see FOR FURTHER INFORMATION 
CONTACT).

Public Hearing

    Section 4(b)(5) of the Act provides for one or more public hearings 
on this proposal, if requested. Requests must be received by the date 
listed above in DATES. Such requests must be sent to the address shown 
in FOR FURTHER INFORMATION CONTACT. We will schedule public hearings on 
this proposal, if any are requested, and announce the dates, times, and 
places of those hearings, as well as how to obtain reasonable 
accommodations, in the Federal Register and local newspapers at least 
15 days before the hearing.

[[Page 61232]]

Peer Review

    In accordance with our joint policy on peer review published in the 
Federal Register on July 1, 1994 (59 FR 34270), we solicited the expert 
opinion of six appropriate and independent specialists for peer review 
of the Species Status Assessment (SSA) that provides the biological 
basis for this proposed listing determination. The purpose of peer 
review is to ensure that our listing determinations are based on 
scientifically sound data, assumptions, and analyses. Their comments 
and suggestions can be found at (https://www.fws.gov/endangered/improving_ESA/peer_review_process.html).

Previous Federal Actions

    On March 12, 2012, the National Marine Fisheries Service (NMFS) 
received a petition dated March 8, 2012, from WildEarth Guardians and 
Friends of Animals to list as endangered or threatened under the Act 
the following 15 sturgeon species: Adriatic sturgeon (Acipenser 
naccarii); Baltic sturgeon (A. sturio); Russian sturgeon (A. 
gueldenstaedtii); ship sturgeon (A. nudiventris); Persian sturgeon (A. 
persicus); stellate sturgeon (A. stellatus); Siberian sturgeon (A. 
baerii); Yangtze sturgeon (A. dabryanus); Chinese sturgeon (A. 
sinensis); Sakhalin sturgeon (A. mikadoi); Amur sturgeon (A. 
schrenckii); Kaluga sturgeon (Huso dauricus); Syr Darya sturgeon 
(Pseudoscaphirhynchus fedtschenkoi); dwarf sturgeon (P. hermanni); and 
Amu Darya sturgeon (P. kaufmanni). The petition states that all 15 
petitioned sturgeon species are affected by similar threats, which are 
primarily: Legal and illegal harvest for meat and/or roe; habitat loss 
and degradation, including dams or dam construction; and water 
pollution. The petition is available at https://www.regulations.gov/document?D=FWS-HQ-ES-2013-0051-0003.
    NMFS acknowledged receipt of this petition in a letter dated April 
14, 2012, and informed the petitioners that NMFS would determine, under 
section 4 of the Act, whether the petition presents substantial 
scientific or commercial information indicating that the petitioned 
action may be warranted. Although the petition was initially sent to 
NMFS, as a result of subsequent discussions between NMFS and the 
Service regarding the August 28, 1974, Memorandum of Understanding 
pertaining to ``Jurisdictional Responsibilities and Listing Procedures 
Under the Endangered Species Act of 1973,'' we have determined that 10 
of the 15 petitioned sturgeon species are within the jurisdiction of 
the Service. Therefore, in April 2012, the Service notified WildEarth 
Guardians that we have jurisdiction over the 10 sturgeon species, 
listed below.
    On September 24, 2013, we published in the Federal Register (78 FR 
58507) a 90-day finding that found that the petition presented 
substantial scientific and commercial information indicating that the 
petitioned action may be warranted for the following 10 sturgeon 
species included in the petition: Siberian sturgeon (Acipenser baerii), 
Yangtze sturgeon (A. dabryanus), Russian sturgeon (A. gueldenstaedtii), 
ship sturgeon (A. nudiventris), Persian sturgeon (A. persicus), Amur 
sturgeon (A. schrenckii), stellate sturgeon (A. stellatus), Syr-Darya 
sturgeon (Pseudoscaphirhynchus fedtschenkoi), dwarf sturgeon (P. 
hermanni), and Amu Darya sturgeon (P. kaufmanni). This document 
constitutes our review and determination of the status of the Yangtze 
sturgeon, our publication of our 12-month finding on this species, and 
our proposed rule to list this species.

Background

    A thorough review of the taxonomy, life history, ecology, and 
overall viability of the Yangtze sturgeon is presented in the Species 
Status Assessment (SSA) for the Yangtze sturgeon (Service 2017; 
available at http://www.regulations.gov at Docket No. FWS-HQ-ES-2017-
0047). The SSA documents the results of the comprehensive biological 
status review for the Yangtze sturgeon and provides an account of the 
species' overall viability through forecasting of the species' 
condition in the future (Service 2017, entire). In the SSA, we 
summarize the relevant biological data and a description of past, 
present, and likely future stressors and conduct an analysis of the 
viability of the species. The SSA provides the scientific basis that 
informs our regulatory decision regarding whether this species should 
be listed as an endangered or threatened species under the Act. This 
decision involves the application of standards within the Act, its 
implementing regulations, and Service policies (see Determination, 
below). The SSA contains the risk analysis on which this determination 
is based, and the following discussion is a summary of the results and 
conclusions from the SSA. We solicited peer review of the draft SSA 
from six qualified experts. We received responses from one of the 
reviewers, and we modified the SSA as appropriate.

Species Description

    The Yangtze sturgeon is a freshwater fish species that attains a 
maximum size of around 130 centimeters (4.3 feet (ft)) and a maximum 
weight of about 16 kilograms (35 pounds) (Billiard and Lecointre 2000, 
p. 368; Zhuang et al. 1997, pp. 257, 259). The species has a triangular 
head, an elongated snout, and large blowholes (Gao et al. 2009b, p. 
117). Yangtze sturgeons have tactile barbels at the front of their 
mouths that they use to dig for food. On the dorsal side, the Yangtze 
sturgeons are dark gray, brownish-gray, or yellow-gray in color. The 
rest of the body is milky white in color (Zhuang et al. 1997, p. 259).

Taxonomy

    Historically, the Yangtze sturgeon coexisted alongside the Chinese 
sturgeon in the Yangtze River. Initial attempts to differentiate the 
two species included using morphological measures. However, 
morphological characteristics can be influenced by differences in 
environmental conditions. For example, wild Yangtze sturgeon display 
grey color on the sides of their bodies while those bred in captivity 
sometimes display a darker color (Li et al. 2015, p. 186).
    Due to similarities in their morphology, the two sturgeons were not 
identified as separate species until 1869, based on collection of 
specimens obtained from the Yangtze River (Zhuang et al. 1997, p. 257). 
Multiple studies since have shown the Yangtze and Chinese sturgeons are 
very closely related and can be considered to be sister species 
(Krieger et al. 2008, p. 41; Zhu et al. 2008, p. 32; Zhang et al. 2000, 
p. 136). A study of mitochondrial DNA found that Yangtze and Chinese 
sturgeon have a divergence value of 0.3 percent. This is in contrast to 
Chinese sturgeon and starry sturgeon (Acipenser stellatus), which have 
a divergence value of 7.7 percent (Zhang et al. 2000, pp. 133-134). 
While these results suggest that Yangtze and Chinese sturgeon are 
closely related species, taxonomic confusion regarding the two species 
continued well into the 1960s (Li J. et al. 2015, p. 186). In addition 
to genetic similarities, Yangtze and Chinese sturgeon share the same 
habitat and multiple studies suggest that Yangtze sturgeon may be a 
landlocked ecotype of the Chinese sturgeon (Kynard 2016, pers. comm.; 
Li J. et al. 2015, p. 186; Krieger et al. 2008, p. 42; Zhang et al. 
2000, p. 136).
    Despite similarities between Yangtze and Chinese sturgeon, there 
are differences between the two species.

[[Page 61233]]

Yangtze and Chinese sturgeon can be differentiated by the different 
ecoregion they inhabit. The Chinese sturgeon is an anadromous species 
(species that spawn in freshwater and spend most of its life at sea) 
that migrates between coastal feeding grounds and spawning grounds in 
both the Yangtze River and the Pearl River. On the other hand, the 
Yangtze sturgeon is a potamodromous species (a species that conducts 
its entire life cycle in freshwater) that migrates between feeding 
grounds and spawning grounds entirely within the Yangtze River basin 
(Kynard et al. 2003, p. 28; Zhuang et al. 1997, pp. 257-295).
    In addition to differences in their life history, these two species 
can also be differentiated based on their mitochondrial and nuclear DNA 
(Li J. et al. 2015, pp. 185, 194). Therefore, despite possessing 
morphological and genetic similarities, there are differences in the 
habitat, life history characteristics, and genetic makeup between the 
two species. We thus accept the Yangtze sturgeon as a separate species 
as classified below:

Class: Actinopterygii
Order: Acipenseriformes
Family: Acipenseridae
Species: Acipenser dabryanus Dum[eacute]ril, 1869

Biology and Life History

    Although the Yangtze sturgeon's life history is similar to other 
sturgeon species, there are key differences. Based on the best 
available information, much of what is known about the Yangtze 
sturgeon's life history comes from research on the more numerous and 
studied Chinese sturgeon due to similarities in morphology, taxonomy, 
and life history between the two species. Yangtze sturgeons spawn in 
the spring from March to April, with a smaller late fall/early winter 
spawning period occurring from October to December (Qiwei 2010, p. 3; 
Gao et al. 2009b, p. 117; Kynard et al. 2003, p. 28). Spawning 
migration begins when water level, flow velocity, and silt content 
enters a downward trend (Zhang H. et al. 2012, p. 4).
    At the spawning site, female Yangtze sturgeons can lay between 
57,000 to 102,000 eggs. These eggs, when mature, are gray to black and 
range from 2.7 to 3.4 millimeters (0.11 to 0.13 inches) in diameter. 
The eggs are sticky and firmly adhere to the space between pebbles and 
boulders, known as the ``interstitial'' space, on the riverbed (Gao et 
al. 2009b, p. 117; Zhuang et al. 1997, p. 261). Larvae emerge from the 
eggs about 115 to 117 hours after fertilization, and they remain at the 
spawning ground for around 12 to 30 days before dispersing downstream 
(Kynard et al. 2003, pp. 33-34; Zhuang et al. 1997, p. 262). Yangtze 
sturgeons do not start their migration downriver until they become 
juveniles.
    Juvenile sturgeons disperse around 100 to 200 kilometers (km) (62 
to 124 miles (mi)) downstream from their spawning ground and arrive in 
backwater pools and sandy shallows with low velocity flow and rich mud 
and sand substrate where they feed on insects, aquatic plants, and 
small fish (Zhang et al. 2011, p. 184; Zhuang et al. 1997, p. 259). 
During the spring flood on the main stem of the Yangtze River, 
juveniles will move to the tributaries to feed. Young sturgeons will 
remain in these feeding reaches until they reach maturity (4 to 6 years 
for males and 6 to 8 years for females) after which they begin 
migrating upstream towards the spawning ground during the spring flood 
(Zhuang et al. 1997, p. 261).

Habitat

    The Yangtze sturgeon is found in sandy shoal with silt ground and 
gentle to moderate water flow (Bemis and Kynard 1997, p. 169; Zhuang et 
al. 1997, p. 259). The spawning habitat for the Yangtze sturgeon is a 
riverbed that contains larger boulders, pebbles, clear water with a 
velocity of 1.2 to 1.5 meters (m) per second (3.9 to 4.9 ft per 
second), and a depth of 5 to 15 m (16 to 49 ft) (Zhuang et al. 1997, p. 
261). The presence of large boulders ensures there is sufficient 
interstitial space between the rocks for eggs to adhere to. At the same 
time, smaller pebbles and gravel fill in the interstitial space so that 
water flowing through the space is not too high to prevent adherence 
(Du et al. 2011, p. 257). Sufficient velocity is also needed to prevent 
excess buildup of gravel in the interstitial space (Du et al. 2011, p. 
262). If there is insufficient interstitial space, eggs will not adhere 
to the boulders on the riverbed. If there is too much space, the water 
current will be too strong and the eggs will be washed away. Therefore, 
suitable sturgeon habitat has specific requirements for velocity and 
riverbed composition to ensure successful spawning.

Distribution

Historical Range
    As its name implies, the Yangtze sturgeon is found in the Yangtze 
River (Wu et al. 2014, p. 5). The river is more than 6,397 km (3,975 
mi) in length and is divided into three segments. The upper reach, 
which span a total of about 4,300 km (2,671 mi), is further sub-divided 
into two segments: the Jinsha River segment, which stretches from the 
headwater in Yushu in the Tibetan Plateau to Yibin, a distance of about 
2,300 km (1,429 mi), and the upper Yangtze River, which stretches from 
Yibin to the Three Gorges region at Yichang, a distance of about 1,000 
km (621 mi) (Cheng et al. 2015, p. 571; Jiang et al. 2008, p. 1471; Fu 
et al. 2003, p. 1651). Four major tributaries feed into the upper 
Yangtze. They are: the Min, Tuo, Jialing, and the Wu River (Chen Z. et 
al. 2001, p. 78). The middle reach is from Yichang to Hukou, a distance 
of about 950 km (590 mi). The Yangtze River widens in this segment and 
is identified by multiple large lakes, including Lake Dongting and Lake 
Poyang. The lower reach stretches from Hukou to the mouth of the river 
at Shanghai, a distance of about 930 km (577 mi) (Fu et al. 2003, p. 
1651).
    Historically, the Yangtze sturgeon was found in the lower portion 
of the Jinsha River and the upper, middle, and lower reaches of the 
Yangtze River, a distance of about 1,300 km (807 mi) (Wu et al. 2014, 
p. 5). The majority of historical sightings occurred in the lower 
Jinsha and upper Yangtze River with occasional sightings in the middle 
and lower Yangtze (Zhuang et al. 1997, p. 259). The species has also 
been found in major tributaries that feed into the upper Yangtze 
including the Min, Tuo, and Jialing (Artyukhin et al. 2007, p. 370). 
There have also been sightings of the species in Dongting Lake and 
Poyang Lake in the middle and lower reaches, respectively (Zhuang et 
al. 1997, p. 259). One sighting took place as far downstream as Anhui 
province, a distance of more than 2,000 km (1,242 mi) downstream from 
Yibin (Zhuang et al. 1997, p. 261). The species' spawning reach is 
understood by Yangtze sturgeon researchers to have occurred from 
Maoshui in the lower Jinsha River to Hejiang in the upper Yangtze River 
(Zhang et al. 2011, p. 184).
Current Range
    The Yangtze sturgeon's current range is limited to the upper 
Yangtze River and its tributaries in the reaches between Yibin and 
Yichang, a distance of about 1,000 km (Wu et al. 2014, p. 5; Dudgeon 
2010, p. 128; Huang et al. 2011, p. 575; Zhang et al. 2011, p. 181; 
Artyukhin et al. 2007, p. 370). The completion of the Gezhouba Dam in 
1981 at Yichang prevented the upstream migration of adults to the 
species' spawning ground (Zhuang et al. 1997, p. 261). As a result of 
the construction of Gezhouba Dam, the species may have been extirpated 
in reaches below the dam (Li et al. 2015, p. 186; Zhu et al. 2008, p. 
30). That said, from 2014-2017,

[[Page 61234]]

fishermen below Gezhouba Dam accidently captured four adult Yangtze 
sturgeons, suggesting the presence of a very small remnant population 
(Du 2017, pers. comm.). Due to Gezhouba Dam's smaller size, the 
reservoir for the Gezhouba Dam is relatively small (Kynard 2017, pers. 
comm.) However, the Three Gorges Dam, located slightly upstream from 
Gezhouba Dam, and its reservoir changed the hydrology of the Yangtze. 
Construction on the Three Gorges Dam began in 2003 and was completed in 
2009. The reservoir, which extends 600 km (372 mi) upstream, further 
reduced the species' range by modifying reaches above Three Gorges Dam 
to a lentic (still water) system (Chen D. et al. 2009, p. 341; Fu et 
al. 2003, p. 1650). Loss of lotic (rapidly moving water) ecosystem 
reduces the quality of remaining habitat for the species (Kynard 2016, 
pers. comm.; Cheng et al. 2015, pp. 570, 576). On the lower Jinsha 
River, in the upstream portion of the species' historical range, the 
construction of the Xiangjiaba Dam, which was completed in 2008, 
limited the species' spawning ground to areas below the dam (Zhang et 
al. 2011, pp. 183-184). The species continues to ascend the major 
tributaries in the upper Yangtze, including the Min, Tuo, and Jialing 
River (Huang et al. 2011, p. 575; Artyukhin et al. 2007, p. 370).

Historical and Current Population

    The Yangtze sturgeon was historically abundant and was commercially 
harvested up to the 1970s (Lu et al. 2015, p. 89; Zhang et al. 2013, p. 
409; Kynard et al. 2003, p. 27). The majority (80 percent) of harvest 
of Yangtze sturgeon took place during the 1950s to the 1970s. However, 
overharvesting during this time period led to a sharp decline in the 
population size (Kynard et al. 2003, p. 27).
    While there may have been natural recruitment of the species in the 
1990s, no natural recruitment has been observed in the wild since the 
2000s (Du et al. 2014, p. 1; Wu et al. 2014, p. 1). The population is 
currently being sustained by artificial restocking. Between the years 
of 2010-2013, 7,030 Yangtze sturgeon juveniles were released into the 
middle and upper Yangtze River in two to three batches each year (Wu et 
al. 2014, p. 3). Restocking efforts have been ongoing in the reaches 
below Gezhouba Dam since 2014 (Hu 2017, pers. comm.). However, 
restocked sturgeons suffer from low fitness; most notably, they lack 
the ability to survive to reproductive age. Capture data obtained from 
the releases in 2010-2013 found that 95 days after restocking, no 
restocked sturgeons were caught either by researchers or by fishermen 
in the upper Yangtze River (Wu et al. 2014, pp. 3-5). These results 
indicate that restocked sturgeon have a very low survival rate. 
Although we do not have population estimates for the species, based on 
the fact that there has been no observable natural reproduction since 
the 2000s and the low survival rate of restocked sturgeon, the species 
population in the Yangtze River is likely to be very low when compared 
to historical numbers (Du et al. 2014, p. 1; Wu et al. 2014, p. 4).

Summary of Threats and Conservation Measures That Affect the Species

    The Act directs us to determine whether any species is an 
endangered species or a threatened species because of any factors 
affecting its continued existence. We completed a comprehensive 
assessment of the biological status of the Yangtze sturgeon, and 
prepared a report of the assessment, which provides a thorough account 
of the species' overall viability. In this section, we summarize the 
conclusions of that species status assessment, which can be accessed at 
Docket No. FWS-HQ-ES-2017-0047 on http://www.regulations.gov.

Dams on the Yangtze River and Its Effects

    The topography of the upper Yangtze River basin is characterized by 
mountains of varying heights. The change in elevation between the upper 
Yangtze to the lower Yangtze amounts to 3,280 m (10,761 ft), which 
makes the upper Yangtze River an ideal place for hydroelectric projects 
(Fan et al. 2006, p. 33). The growth of dam construction in China has 
accelerated during the past decades. From the 1970s to the 1990s, an 
average of 4.4 large reservoirs (capacity greater than 0.1 km\3\) were 
constructed per year. By the 2000s, this number had increased to an 
average construction rate of 11.8 large reservoirs per year. By 2011, 
China possessed 552 large reservoirs, 3,269 medium reservoirs (capacity 
of 0.01-0.1 km \3\), and 84,052 small reservoirs (capacity of 0.0001-
0.01 km \3\); of this number, the Yangtze River basin contained 45,000 
dams and reservoirs, including 143 dams having large reservoirs, or a 
quarter of all large reservoirs in China (Miao et al. 2015, p. 2350; 
Mueller et al. 2008, p. 233). The construction of dams and reservoirs 
have multiple and broad effects on the Yangtze sturgeon and its 
habitat, including limiting connectivity between spawning and feeding 
reaches; altering water temperature, water discharge, and velocity 
rates; and changing sediment concentration.
Connectivity
    Dam construction on Yangtze River limits the ability of the Yangtze 
sturgeon to migrate between spawning and feeding reaches. Dam 
construction on the Yangtze occurs on both the upper and lower end of 
the species' current range. In the middle Yangtze River, the 
construction of Gezhouba Dam in 1981 prevented migration of adults 
downstream of the dam from being able to migrate to the species' 
spawning ground in the upper Yangtze near Yibin (Miao et al. 2015, p. 
2351; Dudgeon 2010, p. 128; Fang et al. 2006, p. 375; Zhuang et al. 
1997, p. 261). Although the reaches below Gezhouba Dam might be 
suitable for the species, at present there has been no observed natural 
reproduction below Gezhouba Dam (Du 2017, pers. comm.). The 
construction of Three Gorges Dam created a reservoir, which affected 
individuals of the species upstream. The Three Gorges Dam reservoir, 
which extended 600 km upstream from the dam, transformed the area into 
unsuitable habitat (Kynard 2016, pers. comm.; Cheng et al. 2015, p. 
570; Miao et al. 2015, p. 2351). After the construction of the 
reservoir, the species rarely moves to reaches below Chongqing, a 
distance of approximately 500 km (Wu et al. 2015, p. 5).
    Meanwhile, the construction of Xiangjiaba Dam on the lower Jinsha 
River segment occurred on part of the historical spawning reach of the 
species. Xiangjiaba Dam is a barrier to all fish species and prevents 
the migration to areas above or the below the dam (Wu et al. 2014, p. 
2). However, the species may be able to use spawning reaches below the 
dam (Fan et al. 2006, p. 36). That said, a dam located upstream from 
the species' habitat affects the species downstream by altering water 
temperature and sedimentation rate, which we discuss below (Fan et al. 
2006, p. 36).
    In addition to dams currently present on the lower Jinsha and upper 
Yangtze River, in the early 2000s, a proposal was presented for the 
construction of the Xiaonanhai Dam, which is to be located upstream 
from Chongqing. If built, this dam will create a barrier between the 
species' last known spawning ground and feeding reach, which, depending 
on design, could have a negative impact on the species (Cheng et al. 
2015, p. 579). However, at present, China's Ministry of Environmental 
Protection has rejected the proposal and any future dam projects on the 
last stretch of free-flowing Yangtze River due to environmental impacts 
(Chang 2016, pers. comm.; Kynard 2016, pers. comm.; Mang 2015, 
unpaginated).

[[Page 61235]]

    While the rejection of the proposal to construct the Xiaonanhai Dam 
is good for Yangtze sturgeon, the country's twelfth 5-year plan stated 
that renewable resources should make up 15 percent of all energy 
generated in China with 9 percent coming from hydroelectric source. 
This plan translates to an additional 230 gigawatt (GW) of power 
generated via hydroelectric dam. This target is a very ambitious one, 
given that Three Gorges Dam generates 18 GW of power per year (Dudgeon 
2011, p. 1496). Furthermore, although the plan to construct the 
Xiaonanhai Dam has been rejected, plans to construct dams on the Jinsha 
River as part of a 12-dam cascade are still proceeding (Dudgeon 2010, 
p. 129).
Water Temperature
    Historically, dams negatively affect the reproductive success of 
Yangtze sturgeon by altering water temperature flowing through the 
species' habitat. Water temperature influences the reproductive success 
of the Yangtze sturgeon at two stages in its life cycle: Commencement 
of spawning migration and egg survival. Spawning migration of the 
Yangtze sturgeon will not start until the water temperatures reach 18 
degrees Celsius ([deg]C) (64.4 degrees Fahrenheit ([deg]F)) (Cheng et 
al. 2015, p. 578). Historically, before the construction of the 
Xiangjiaba and other dams on the lower Jinsha, water temperature 
reached 18 [deg]C (64.4[emsp14][deg]F) around April. However, the 
construction of the dams stratified the water table. As most dams on 
the Yangtze are designed to release cold water located at the bottom of 
the dams, the spawning season for the Yangtze sturgeon could be delayed 
by more than a month (Deng et al. 2006 and Wang et al. 2009, as cited 
in Cheng et al. 2015, p. 578). This delay shortens the maturing season 
for juveniles and is likely to reduce the species' survival rate. 
Additionally, if the water remains too cold for too long, sturgeon eggs 
will not mature, resulting in total loss of reproduction for that 
season (Kynard 2016, pers. comm.).
Water Discharge and Velocity
    By altering discharge rates, dams affect the Yangtze sturgeon's 
reproductive success by affecting the timing of spawning migration. The 
species' spawning migration begins when flow rate increases during the 
spring flood (Zhuang et al. 1997, p. 261). At Yichang, the most 
downstream portion of the Yangtze sturgeon's current range, the mean 
discharge rate from 1983 to 2004 (before the construction of Three 
Gorges Dam) was between 10,000 m\3\/s and 17,000 m\3\/s. After the 
construction of the Three Gorges Dam, mean flow rate varies between 
12,780 m\3\/s in high flow years and 6,414 m\3\/s in low flow years 
(Chen and Wu 2011, p. 384). For Chinese sturgeon, successful spawning 
occurs when water discharge is between 7,000 and 26,000 m\3\/s. This 
means that although flow rate during high flow years remains in the 
optimal discharge rate for Chinese sturgeon spawning, discharge rates 
during low flow years could have a negative impact on spawning success 
rates of both sturgeon species (Chen and Wu 2011, p. 385).
    While we do not have long-term historical data for water discharge 
rate for the Yangtze sturgeon at Yibin, the flow rate at Chongqing 
during the years 1950-2000 was between 4,540 m\3\/s and 11,000 m\3\/s 
(Zhang et al. 2011, p. 183). Since Chongqing is farther upstream from 
Yichang, this flow rate may be the river's natural rate at this section 
of the Yangtze. However, following the impoundment by the Xiangjiaba 
Dam in October 2012 and the Xiluodo Dam in May 2013, discharge in the 
lower Jinsha has declined more than 50 percent, suggesting that current 
flow rate is likely to be lower than the flow rate between 1950 and 
2000 (Cheng et al 2015, p. 577). The Jinsha River feeds into the upper 
Yangtze River. This means that reduction in flow rate on the Jinsha 
will also reduce the flow rate on the upper Yangtze River. Given that 
the Yangtze sturgeon is closely related to the Chinese sturgeon, a 
reduction of flow rate by over 50 percent could have a significant 
negative impact on the reproductive success rate of the Yangtze 
sturgeon given its already tenuous biological status.
Sedimentation Concentration
    In addition to affecting spawning of Yangtze sturgeon, dams affect 
the condition of the species' spawning ground through changes in the 
water velocity and sedimentation load. Because reproductive success of 
sturgeon is tied to the amount of suitable habitat, a reduction in 
habitat area can reduce the reproductive success of the species (Ban et 
al. 2011, p. 96; Bemis and Kynard 1997, p. 169). Specifically, flow 
rates affect the Yangtze sturgeon by affecting the sedimentation 
concentration in the water and on the riverbed. As noted before, 
Yangtze sturgeon lay their eggs on the interstitial spaces between 
rocks and boulders. The makeup of the riverbed needs to contain the 
right concentration of small pebbles and larger boulders to provide 
sufficient space for adherence and aeration of the eggs (Du et al. 
2011, pp. 261-262; Bemis and Kynard 1997, p. 169).
    Historically, discharge rates and sedimentation load were in 
alignment with precipitation rates. A low discharge rate results in low 
sedimentation load. High discharge rates lead to higher sediment load, 
as high flows are able to transport more sediments downstream (Chen Z. 
et al. 2001, pp. 88-89). However, dams cause discharge and 
sedimentation rates to go out of alignment. While discharge rates 
remain aligned with precipitation rate, the sedimentation load pattern 
displays a 2-month delay due to sediment being trapped behind the dams. 
When the spring flood occurs, numerous dams release highly concentrated 
sediment downstream all at once, resulting in an asymmetrical sediment 
load pattern (Chen Z. et al. 2001, p. 90). The effects of sediment load 
patterns on the species' habitat occur at two stages: Release of 
sediments during high river stages and reduced sediment size and load 
over time (Dudgeon 2011, pp. 1488, 1495).
    The Jinsha River dams trap up to 82 percent of the sediment during 
the winter months, resulting in ``clean'' (i.e., sediment-free) water 
flowing downstream. This ``clean'' water lacks nutrients and may 
decrease the food supply of the Yangtze sturgeon over the winter months 
(Cheng et al. 2015, p. 578). During the subsequent spring flood, the 
release of concentrated sediment by dams likely results in sediments 
filling in all the interstitial spaces in spawning habitat, thereby 
reducing available spawning habitat for that season.
    Despite the spring release of concentrated sediments, sediment load 
is expected to decline over time. At Yichang, sediment load per year 
has decreased from 530 mega tons (Mt) per year in the 1950s-1960s, to 
60 Mt per year after 2003. Additionally, suspended sediment at Yichang 
below Three Gorges Dam has decreased in size from 8-10 micrometers in 
1987-2002 to 3 micrometers after 2003 (Yang et al. 2011, pp. 16-17). 
Reduction in sediment size can lead to increased embeddedness of 
available interstitial space. At the reaches below Gezhouba Dam, 
sedimentation has reduced available interstitial space by up to 50 to 
70 percent (Du et al. 2011, p. 262). This prevents the adherence of 
eggs to the river bottom and reduces the quality of remaining spawning 
habitats.
Summary of Effects of Dams on the Yangtze Sturgeon
    Dam construction in the middle Yangtze and lower Jinsha has 
restricted

[[Page 61236]]

the species' range to the reaches of the Yangtze between Yibin and 
Yichang (Wu et al. 2014, p. 5). These projects prevented the migration 
of the species upstream and downstream of the dams. Although there is 
currently access between the species' remaining spawning and feeding 
grounds, the condition of remaining habitat is likely to be negatively 
affected by changes to the river flow and sedimentation rate. The 
formation of the Three Gorges reservoir has transformed the 600-km 
reach above the dam into a lentic system, resulting in unsuitable 
habitat for the species (Kynard 2016, pers. comm.; Cheng et al. 2015, 
pp. 570, 576). As a result, Yangtze sturgeon rarely use habitat 
downstream from Chongqing (Wu et al. 2014, p. 5).
    Upstream from the species' current range, the construction of the 
Xiluodu and Xiangjiaba Dam is likely to negatively affect the 
reproductive success of the Yangtze sturgeon. Through the release of 
cold water during the spring flood, the dam can delay the spawning 
migration of the sturgeon, which will either shorten the maturation 
time for juveniles or prevent the successful maturation of eggs 
altogether (Kynard 2016, pers. comm.; Cheng et al. 2015, p. 578). 
Alteration to sediment concentration in both the short term and long 
term reduces the quality of remaining habitat (Du et al. 2011, p. 262). 
Given the lack of observed natural reproduction of the species in the 
upper Yangtze, dams significantly affect the viability of the species.

Overfishing (historical) and Bycatch (current)

    Historically, the Yangtze sturgeon was commercially harvested on 
the Yangtze River. In the 1960s, harvest of Yangtze sturgeon accounted 
for 10 percent of total harvest. In the 1970s, 5,000 kilograms (5.5 
tons) of Yangtze sturgeons were caught in the spring season at Yibin 
(Zhuang et al. 1997, p. 262). Since then however, the population of 
Yangtze sturgeon has declined significantly (Zhang et al. 2013, p. 
409). This decline is due to multiple reasons. Fishermen use fine mesh 
nets that prevent smaller fish, weighing as little as 50 grams (1.7 
ounces), from being able to escape. The number of fishing boats 
increased from 500 in 1950s to 2,000 by 1985. More than 140,000 
fishermen currently depend on the river for a living. Furthermore, the 
fishing season overlapped with the main spawning season of the Yangtze 
sturgeon (Yi 2016, p. 1; Fan et al. 2006, p. 37; Zhuang et al. 1997, p. 
262). The replacement of bamboo and reed gear with gear made from 
synthetic fibers further contributed to a higher catch rate of 
sturgeons (Chen D. et al. 2009, p. 346).
    Despite attempts to help conserve the species by restocking, 
restocked juveniles experience very low survival rates (Wu et al. 2014, 
p. 4). From 2010 to 2013, restocking operations released 7,030 
juveniles into the upper Yangtze River main stem. Subsequent bycatch 
between 2010 and 2013 recorded a total of 112 sturgeons caught, 
indicating a very low survival rate of stocked juveniles (Wu et al. 
2014, p. 3). These results suggest very low survivability of restocked 
sturgeon, and the subsequent impacts from bycatch are too high for the 
species to persist (Wu 2016, pers. comm.; Wu et al. 2014, p. 4).

Riverbed Modification

    The Yangtze sturgeon requires river substrate to contain suitable 
concentration to reproduce successfully (Du et al. 2011, p. 257). 
Alteration to the riverbed has reduced the reproductive success of this 
species. To improve navigation on the lower Jinsha and upper Yangtze 
River, multiple projects, including sand and gravel extraction 
operations, were implemented on the reaches between Shuifu and Yibin 
and Yibin and Chongqing (Zhang et al. 2011, p. 184). Between 2005 and 
2009, $44 million (converted to U.S. dollars) were invested to improve 
the navigation between Yibin and Chongqing. These investments have led 
to the modification of 22 riffles (a shallow section of a stream or 
river with rapid current and a surface broken by gravel, rubble or 
boulders) on the upper Yangtze and the deepening of the channel from 
1.8 m (5.9 ft) to 2.7 m (8.8 ft) (Zhang et al. 2011, p. 184). 
Additionally, up to 10, 6, and 3 river dredge ships operate in the 
Yangtze River, the Jinsha River, and the Min River, respectively. The 
operations of these ships alters the bottom topography of the 
riverbeds, which results in the loss of benthic habitat and spawning 
ground for many fish species, including the Yangtze sturgeon (Fan et 
al. 2006, p. 37). These projects are occurring on or near current 
Yangtze sturgeon spawning and feeding grounds from Yibin to Hejiang. 
Thus these operations will continue to reduce the quality and quantity 
of remaining habitat (Zhang et al. 2011, p. 184).

Industrial Pollution

    As a benthic predator, the Yangtze sturgeon is exposed to higher 
concentrations of industrial pollution than many other fish species 
(Yujun et al. 2008, pp. 341-342). While we are not aware of any studies 
that analyze the impacts of industrial pollution on Yangtze sturgeon 
specifically, there have been studies on Chinese sturgeon and other 
sturgeon species. Industrial pollutants such as triphenyltin (TPT) 
affect reproductive success of the Chinese sturgeon. TPT, used in paint 
on ship hulls and in fishnets in China, can be absorbed into the eggs 
of Chinese sturgeon, resulting in increased deformities including 
abnormal development and skeletal and morphological deformities in 
embryos (Hu et al. 2009, pp. 9339-9340).
    A study on TPT exposure to 2- to 3-day-old Chinese sturgeon larvae 
found that 6.3 percent showed skeletal/morphological deformities and 
1.2 percent had no eyes or only one eye. At the same time, larvae from 
spawning hatches of captured adults showed skeletal/morphological 
deformities of 3.9 percent and 1.7 percent that had only one eye or no 
eyes. Given the rate of deformities found in this study, the capability 
for the studied Chinese sturgeon to reproduce was reduced by 58.4 to 
75.9 percent (Hu et al. 2009, p. 9342). Because the Yangtze and Chinese 
sturgeon are closely related species, the presence of TPT in the upper 
Yangtze River is likely reducing the reproductive success of the 
Yangtze sturgeon by a similar rate.
    In addition to TPT, the presence of endocrine disruptors compound 
(EDC) affects Chinese sturgeon by inducing declining sperm activity, 
intersex testis-ova, and a decline in male to female ratio in the 
population (An and Hu 2006, p. 381). A study on EDC found that the 
concentration of EDC in the Yangtze River (1.55 to 6.85 micrograms per 
liter) is very high and could have a detrimental impact on sturgeon in 
the river. This result suggests that industrial discharge of EDC is 
occurring in the Yangtze.
    As a result of rapid industrialization on the Yangtze River, higher 
concentration of heavy metals are found in the Yangtze River (Yujun et 
al. 2008, p. 338). High concentration of heavy metals leads to greater 
accumulation in all aquatic organisms (Yujun et al. 2008, p. 339). The 
toxicity effect of heavy metal accumulation is especially pronounced in 
zoobenthic predators, like the Yangtze sturgeon, because they occupy a 
higher position in the food chain. The result is that by consuming 
smaller prey species that have absorbed heavy metal, zoobenthic 
predator build up heavy metal accumulation inside their bodies (Yujun 
et al. 2008, p. 346). Given that heavy metal concentration is highest 
in benthic animals, especially zoobenthic predators like the sturgeon, 
the effect of heavy metals on the

[[Page 61237]]

sturgeon could be more pronounced than other aquatic species (Yujun et 
al. 2008, p. 341; An and Hu 2006, p. 381). Despite the known impacts on 
captured Chinese sturgeon, we currently do not have evidence of 
population-level impacts of EDC or heavy metal on the wild Yangtze 
sturgeon population. That said, even though we have no evidence of 
morphological deformities in wild sturgeon, it is likely that 
industrial pollution does have an effect on the reproductive success of 
wild sturgeon.

Hybridization With Displaced Native and Nonnative Sturgeon

    Despite decline in wild fishery yields, the Yangtze basin remains 
one of the major centers of China's aquaculture industry. Fishery 
yields from the basin accounts for 65 percent of total freshwater 
fisheries production in China (Shen et al. 2014, p. 1547; Chen D. et 
al. 2009, p. 338). In the past 30 years, sturgeon aquaculture in China 
has risen significantly. Although commercial aquaculturing of sturgeon 
only started in the 1990s, by 2006, production had reached 17,424 tons, 
which accounts for 80 percent of the world total production (Shen et 
al. 2014, p. 1548). The growth of the aquaculture industry in China saw 
aquaculture farms constructed across all branches of the Yangtze River 
(Li R. et al. 2009, p. 636). Sturgeon species that are commonly used in 
the aquacultural industry include A. schrenckii, Huso dauricus, and 
other Amur River sturgeon hybrids (Li R. et al. 2009, p. 636). However, 
none of these commonly cultured species are native to the Yangtze 
River. Additionally, there is a lack of regulation and enforcement of 
regulation to properly manage hybridization of sturgeon species. There 
is also the problem of aquaculture sturgeon escaping from sturgeon 
farms into the wider river system (Li R. et al. 2009, p. 636). The 
result is a comingling of native, exotic, and hybrid sturgeon species 
which could have a negative impact on the Yangtze sturgeon (Shen et al. 
2014, p. 1549; Li R. et al. 2009, p. 636).
    There is currently no native-strain farm (farm that raises native 
species) for sturgeons in China. Because no farms in China focus on 
raising native stock in large enough number, this system creates 
shortages of parental stock of native sturgeons. In response to this 
shortage, farmers crossbreed wild-caught sturgeon with any sturgeon 
species available including nonnative species (Xiong et al. 2015, p. 
658; Li R. et al. 2009, p. 636). For example, in 2006, there was a 
shortage of Siberian sturgeon in China (Acipenser baerii). Farmers then 
started crossbreeding Siberian sturgeon with Russian sturgeon (A. 
gueldenstaedtii), Sterlet sturgeon (A. ruthenus), and Amur sturgeon (A. 
schrenckii) (Li R. et al. 2009, p. 636). Crossbreeding of sturgeon 
species in China alters the wild population makeup. A study on the 
lower Yangtze River in 2006 found that of the 221 young sturgeons 
captured, 153 were hybrids, which accounted for 69.9 percent of total 
sturgeons caught (Li R. et al. 2009, p. 636). This information 
indicates that farmed hybrids are escaping into the river system. 
Although this study was conducted in the lower Yangtze River, because 
sturgeon aquaculture occurs across the Yangtze River system, it is 
likely that hybridization is occurring in the upper Yangtze River as 
well.
    The uncontrolled hybridization of native and nonnative species on 
the Yangtze alters the population dynamics between hybrids and native 
stocks. Hybridization may reduce the fitness of the overall population 
or replace a population of native fish with hybrids (Shen et al. 2014, 
p. 1549; Li R. et al. 2009, p. 636). Hybridization may also result in 
hybrids with better fitness than wild stock that outcompete wild native 
stock of Yangtze sturgeon for habitat and resources. When native fish 
are unavailable, farmers tend to import nonnative fish that have better 
characteristics, such as higher growth rate and better adaptability. 
These non-native sturgeons are bred with available native sturgeon to 
produce hybrids. These hybrids oftentimes escape or are accidentally 
introduced into the wild and then compete with the Yangtze sturgeon for 
resources (Xiong et al. 2015, pp. 657-658). Although hybridization is 
likely to be occurring all along the Yangtze River, we currently do not 
have information on the rates of hybridization of sturgeon in the upper 
Yangtze or how significant the effects are on the Yangtze sturgeon. 
That said, given that hybridized sturgeons make up 69.9 percent of 
sturgeons found in the studied area, it is likely that sturgeon hybrids 
are competing, and will likely continue to compete, with native stocks 
for habitat and resources throughout the Yangtze River system.

Management Efforts

    As a result of overfishing and the construction of Gezhouba Dam in 
1981, the population of Yangtze sturgeon has declined (Du et al. 2014, 
p. 1; Wu et al. 2014, p. 1; Zhang H. et al. 2011, p. 181). In response 
to the decline of the species, national and local officials have 
embarked on a number of initiatives to help conserve the species. These 
initiatives include increasing legal protection for the Yangtze 
sturgeon, creating and designating part of the species' range as a 
protected area, and repopulating the species in the wild through 
restocking (Zhang H. et al. 2011, p. 181; Fan et al. 2006, p. 35; Wei 
et al. 2004, p. 322).

Legal Protections

    In response to the decline of the Yangtze sturgeon, in 1989, 
China's State Council added the Yangtze sturgeon to the National Red 
Data Book for Threatened Chinese Fish as a Class I Protected Animal (Wu 
et al. 2014, p. 1; Zhang H. et al. 2011, p. 181; Dudgeon 2010, p. 128; 
Wei et al. 2004, p. 322; Zhuang et al. 1997, p. 258). Animals listed as 
a Class I species are protected from certain activities, including 
hunting, capturing, or killing, for both commercial and personal uses. 
Scientific research, domestication, breeding, and exhibition are 
exempted (Wei et al. 2004, p. 322). Transportation of Class I-listed 
species requires approval from the Department of Wildlife 
Administration. Import or export of Class I aquatic species is 
regulated by the Fisheries Bureau of the Minister of Agriculture (Wei 
et al. 2004, p. 323).
    In addition to its listing under national law, the species has also 
been included in Appendix II of the Convention on International Trade 
in Endangered Species of Wild Fauna and Flora (CITES) since 1998 
(Ludwig 2008, p. 5; CITES 1997, pp. 152-153). The CITES trade database 
has recorded no international trade of this species going as far back 
as 1975 (the oldest date on CITES database) (CITES 2017). International 
trade in CITES species is regulated via a permit system. Under Article 
IV of CITES, export of an Appendix-II specimen requires the prior grant 
and presentation of an export permit. Export permits for Appendix-II 
specimens are only granted if the Management Authority of the State of 
export is satisfied that the specimens were lawfully obtained and if 
the Scientific Authority of the State of export has advised that the 
trade is not detrimental to the survival of the species in the wild. 
For any living specimen, the Management Authority of the State of 
export must also be satisfied that the specimen will be so prepared and 
shipped as to minimize the risk of injury, damage to health or cruel 
treatment. Re-export of an Appendix-II specimen requires the prior 
grant and presentation of a re-export certificate, which is only 
granted if the Management Authority of the State of re-export is 
satisfied that the specimen

[[Page 61238]]

was imported into that State in accordance with CITES and, for any 
living specimen, that the specimen will be so prepared and shipped as 
to minimize the risk of injury, damage to health or cruel treatment. 
Certain exemptions and other special provisions relating to trade in 
CITES specimens are also provided in Article VII of CITES. In the 
United States, CITES is implemented through the Act and regulations at 
50 CFR part 23.
    Additionally, since 2003, a fishing ban on all fish species has 
been implemented in the upper Yangtze River from February 1 to April 
30. Starting in 2017, the fishing ban was extended from March to June 
(Du 2017, pers. comm.). One of the side effects of this ban is a 
reduction in the bycatch of Yangtze sturgeon since the time period of 
the ban coincides with the spawning season of the Yangtze sturgeon 
(Chen D. et al. 2012, p. 532; Chen D. et al. 2009, p. 348).
    Despite the implementation of legal protection for the species, 
there are several shortcomings with the current regulatory mechanisms 
for the species. China currently does not have a specialized, dedicated 
agency to manage fisheries resources across the country. Riverine 
resource management is maintained at local levels which are often 
located in major population center, far away from the fishery resource 
(Chen D. et al. 2012, p. 541). In the case of Yangtze sturgeon, these 
different jurisdictions have variations in regulation and conservation 
goals for the Yangtze River ecosystem, which limits coordination of 
species-conservation efforts and the overall effectiveness in managing 
species conservation across the Yangtze River basin (Chen D. et al. 
2012, p. 541).
    In addition to a lack of a specialized body or other effective 
basin-wide conservation efforts, lack of funding is major problem for 
local jurisdictions. Enforcement officers often lack basic equipment, 
such as boats, to carry out fishing regulations within the fishery 
(Chen D. et al. 2012, p. 541). Additionally, while commercial 
harvesting of the species is prohibited, bycatch is still occurring and 
may still be too high to sustain a wild breeding population (Zhang H. 
et al. 2011, p. 184). The new fishing ban implemented in 2017 has the 
potential to reduce bycatch (Du 2017, pers. comm.). However, the 
positive effects from a fishing ban on the Yangtze may be limited, 
given the importance of the Yangtze to the economic well-being of 
riverside communities as entire stretches of the river cannot be closed 
off to fishing (Fan et al. 2006, p. 38).

Protected Areas

    To offset the effects of habitat loss due to dams, China's State 
Department established in 2000 the National Reserve of Hejiang-Leibo 
Reaches of the Yangtze River for Rare and Endangered Fishes (Zhang H. 
et al. 2011, p. 181; Fan et al. 2006, p. 35). The reserve is located on 
the upper Yangtze River on the reaches between Xiangjiaba Dam and the 
city of Chongqing. This reserve is intended to protect three imperiled 
fish species, the Yangtze sturgeon, the Chinese paddlefish (Psephurus 
gladius), and the Chinese high-fin banded shark (Myxocyprinus 
asiaticus), as well as 37 other endemic fish species (Fan et al. 2006, 
p. 35). In 2005, the reserve was expanded to mitigate the impact from 
current and future hydroelectric projects (Zhang H. et al. 2011, pp. 
181-182). While the reserve plays an important role in protecting 
wildlife within its borders, expansion of the hydroelectric project in 
the lower Jinsha River and upper Yangtze outside the protected area is 
likely to undermine the effectiveness of the reserve. In order to 
facilitate economic growth, China has decentralized authority for 
infrastructure development from the state to local municipalities. This 
decentralized model has resulted in provincial governments prioritizing 
economic growth over environmental impacts (Dudgeon 2011, p. 1496).
    Since 2003, hydroelectric projects in China are subjected to 
environmental assessments and approval from the Ministry of 
Environmental Protection (Ministry) (Dudgeon 2011, p. 1496). However, 
this approval is routinely ignored even by nationally owned 
corporations. For example, in 2004, China Three Gorges Corporation 
(CTGC) began construction of the Xiluodu Dam in the Lower Jinsha 
without obtaining permission from the Ministry (Dudgeon 2011, pp. 1496-
1497). In response, the Ministry suspended work on the dam in 2005. 
However, despite initial reservation about the lack of an environmental 
impact assessment, the Ministry quickly compiled reports and allowed 
the dam construction to proceed (Dudgeon 2011, p. 1499). Additionally, 
in 2009 the Ministry gave the authority to build two additional dams on 
the Jinsha segment to other dam construction companies after a brief 
suspension (Dudgeon 2010, p. 129). Overall, these temporary suspensions 
of construction have done little to slow down the pace of dam 
development. In 2011, CTGC began constructing the Xiangjiaba Dam on the 
Lower Jinsha. The location of this dam would have occurred within the 
500-km boundary of the National Reserve of Hejiang-Leibo Reaches. The 
CTGC successfully petitioned the State Council to redraw the boundaries 
of the reserve to exclude the section of the river where the Xiangjiaba 
Dam is located (Dudgeon 2011, p. 1500; Dudgeon 2010, p. 129). The 
reserve, now renamed the National Natural Reserve Area of Rare and 
Special Fishes of the Upper Yangtze River, encompasses the reaches 
below the Xiangjiaba Dam from Yibin to Chongqing as well the 
tributaries that feed into the Yangtze (Zhang H. et al. 2011, p. 182; 
Fan et al. 2006, p. 35). The redrawing of the area of the reserve to 
accommodate the construction of Xiangjiaba Dam lends further evidence 
that local governments are prioritizing growth over environmental 
impacts. The construction of the Xiangjiaba Dam led to the impoundment 
of the reach upriver, which will affect the flow and sedimentation rate 
downstream (Cheng et al. 2015, p. 577; Dudgeon 2011, p. 1500). Given 
the lack of natural reproduction of the Yangtze sturgeon and future 
impacts from the dam, it is unlikely that the current boundary of the 
reserve will be sufficient to maintain a wild breeding population of 
this species (Kynard 2016, pers. comm.; Dudgeon 2011, p. 1500).

Restocking

    As a result of the decline of the species, controlled reproduction 
and release of juvenile Yangtze sturgeon has occurred every year since 
2007 (Zhang H. et al. 2011, p. 181). Between 2007 and 2012, more than 
10,000 Yangtze sturgeon juveniles were released into the upper Yangtze 
on reaches downstream from Xiangjiaba Dam (Wu et al. 2014, p. 1). In 
2014, restocking was started on the reaches below Gezhouba Dam (Du 
2017, pers. comm.). While this number pales in comparison to the six 
million Chinese sturgeon that have been released since 1983, the 
restocking of the Yangtze sturgeon represent an attempt by local and 
state officials to try to maintain the species in the wild (Chen D. et 
al. 2009, p. 349).
    Despite the efforts to restock the Yangtze sturgeon in the wild, 
current restocking efforts are unsuccessful (Wu et al. 2014, p. 4). No 
juveniles were caught 95 days after release, indicating that released 
sturgeon experienced a very high mortality rate (Wu et al. 2014, p. 4). 
There are multiple possible reasons for the limited success of current 
restocking efforts, including poor breeding and rearing techniques that 
result in progeny with low survival rates in the wild, high bycatch 
rate, and loss or deterioration of remaining

[[Page 61239]]

habitats (Cheng et al. 2015, pp. 579-580; Du et al. 2014, p. 2; Shen et 
al. 2014, p. 1549; Zhang H. et al. 2011, p. 184). Thus, despite 
attempts to conserve the species in the wild through restocking, with 
all the other forces acting on the Yangtze sturgeon it is unlikely that 
current restocking efforts are adequate to improve the species' 
condition in the wild.

Stochastic (Random) Events and Processes

    Species endemic to small regions, or known from few, widely 
dispersed locations, are inherently more vulnerable to extinction than 
widespread species because of the higher risks from localized 
stochastic (random) events and processes, such as industrial spills and 
drought. These problems can be further magnified when populations are 
very small, due to genetic bottlenecks (reduced genetic diversity 
resulting from fewer individuals contributing to the species' overall 
gene pool) and random demographic fluctuations (Lande 1988, p. 1455-
1458; Pimm et al. 1988, p. 757). Species with few populations, limited 
geographic area, and a small number of individuals face an increased 
likelihood of stochastic extinction due to changes in demography, the 
environment, genetics, or other factors, in a process described as an 
extinction vortex (a mutual reinforcement that occurs among biotic and 
abiotic processes that drives population size downward to extinction) 
(Gilpin and Soule[acute] 1986, pp. 24-25). The negative impacts 
associated with small population size and vulnerability to random 
demographic fluctuations or natural catastrophes can be further 
magnified by synergistic interactions with other threats.
    The Yangtze sturgeon is known from a single geographic population 
in the upper Yangtze River and its tributaries (Zhang et al. 2011, pp 
181-182; Zhuang et al. 1997, p. 259). As a result, the species is 
highly vulnerable to stochastic processes and is highly likely 
negatively affected by these processes. In March 2000, for example, the 
Jinguang Chemical Plant, located on the Dadu River (a tributary of the 
Yangtze River), was found to be releasing yellow phosphorous into the 
Yangtze. This substance is highly toxic to aquatic organisms including 
the Yangtze sturgeon (Chen D. et al. 2009, p. 343). Another spill in 
2006 on the Yuexi River, which also feeds into the Yangtze, saw mercury 
being released into the river (Worldwatch Insitute 2006, npn). These 
and other incidents combined with the fact that the Yangtze River 
system is home to a large number of chemical plants suggest that risk 
of industrial spills is quite high. Therefore, it is likely that 
stochastic processes have negative impacts on the species in 
combination with other factors such as habitat modification and loss 
and bycatch.

Determination

    Section 4 of the Act (16 U.S.C. 1533), and its implementing 
regulations at 50 CFR part 424, set forth the procedures for adding 
species to the Federal Lists of Endangered and Threatened Wildlife and 
Plants. Under section 4(a)(1) of the Act, we may list a species based 
on: (A) The present or threatened destruction, modification, or 
curtailment of its habitat or range; (B) overutilization for 
commercial, recreational, scientific, or educational purposes; (C) 
disease or predation; (D) the inadequacy of existing regulatory 
mechanisms; or (E) other natural or manmade factors affecting its 
continued existence. Listing actions may be warranted based on any of 
the above threat factors, singly or in combination.
    We have carefully assessed the best scientific and commercial 
information available on the Yangtze sturgeon. While we do not know the 
exact population size of the Yangtze sturgeon, the species was 
historically abundant enough to be commercially viable up to the 1970s, 
after which it experienced a significant decline (Kynard et al. 2003, 
p. 27). Loss of individuals due to overharvesting by fishermen on the 
Yangtze (Factor B) is the main factor that contributed to the 
historical decline of the species. Subsequent construction of dams on 
the Yangtze prevented the migration in the middle Yangtze and lower 
Jinsha, which prevented recovery of the species in these areas (Miao et 
al. 2015, p. 2351; Wu et al. 2014, p. 2; Dudgeon 2010, p. 128; Fang et 
al. 2006, p. 375; Zhuang et al. 1997, p. 261). Additionally, dams 
affect the quality of the species' habitat through changes in 
discharge, temperature, and sedimentation rate (Zhang G. et al. 2012, 
p. 445; Du et al. 2011, p. 262; Chen Z. et al. 2001, p. 90). In 
addition to dams, the species' habitat is also adversely affected by 
riverbed modification to accommodate increasing boat traffic. The 
combined effects of dams and riverbed modification on the Yangtze 
include the loss and reduction in quality of remaining habitat (Factor 
A).
    Despite conservation efforts undertaken by local and national 
authorities such as fishing bans and restocking, current efforts do not 
appear to be successful in conserving the species. No natural 
reproduction has been documented in the wild since the 2000s (Wu et al. 
2014, p. 1). Additionally, restocked juvenile sturgeon experience very 
high mortality rates due to a high bycatch rate and an inability to 
survive in wild conditions (Du et al. 2014, p. 1; Wu et al. 2014, p. 
4).
    Industrial pollution and hybridization with displaced native and 
nonnative sturgeon species are also acting on the species (Factor E). 
Although we do not have information on the impact of industrial 
pollution on the species in the wild, studies in a laboratory 
environment found that pollutants such as TPT and EDC can reduce the 
reproductive success rate of adult sturgeons (Hu et al. 2009, p. 9342; 
An and Hu 2006, pp. 379-380). Additionally, there are high 
concentrations of TPT and EDC in the Yangtze River. While we do not 
have data on the hybridization of Yangtze sturgeon with other species, 
surveys conducted in the lower Yangtze River found that 69.9 percent of 
sturgeon species caught were hybrids (Li R. et al. 2009, p. 636). These 
results suggest that industrial pollution and hybridization, in tandem 
with other factors, are affecting the species.
    Therefore, for the following reasons we conclude that this species 
has been and continues to be significantly reduced to the extent that 
the viability of the Yangtze sturgeon is significantly compromised:
    (1) The species is limited to a single geographic population in the 
upper Yangtze main stem and its tributaries. There is also some 
evidence of a small remnant population in the middle Yangtze.
    (2) Loss of habitat and connectivity between the spawning and 
feeding reaches is having a significant adverse effect on the species, 
which appears to have low to no reproduction.
    (3) The cumulative effects of habitat modification and loss due to 
dams and riverbed projects, bycatch, industrial pollution, and 
hybridization are adversely affecting the species.
    (4) Current restocking and management efforts are inadequate to 
maintain the species' presence in the wild.
    (5) Stochastic events, such as industrial spills or drought, can 
reduce the survival rate of the species
    In section 3(6), the Act defines an ``endangered species'' as any 
species that is ``in danger of extinction throughout all or a 
significant portion of its range'' and in section 3(20), a ``threatened 
species'' as any species that is ``likely to become an endangered 
species within the foreseeable future throughout all or a significant 
portion of

[[Page 61240]]

its range.'' We find that the Yangtze sturgeon is presently in danger 
of extinction throughout its range based on the severity and immediacy 
of threats currently adversely affecting the species. The populations 
and distributions of the species have been significantly reduced to the 
point where there is no current reproduction in the wild which is 
indicative of a very high risk of extinction, and the remaining habitat 
and populations are threatened by a variety of factors acting alone and 
in combination to reduce the overall viability of the species.
    Based on the factors described above and their impacts on the 
Yangtze sturgeon, we find the following factors to be threats to this 
species (i.e., factors contributing to the risk of extinction of this 
species): Loss and modification of habitat due to dams and riverbed 
expansion (Factor A), bycatch (Factor C), and cumulative effects 
(Factor E) of these and other threats including industrial pollution 
and hybridization. Furthermore, current legal and management efforts 
over these practices are inadequate to conserve the species (Factor D).
    Therefore, on the basis of the best available scientific and 
commercial information, we propose listing Yangtze sturgeon as 
endangered in accordance with sections 3(6) and 4(a)(1) of the Act. We 
find that a threatened species status is not appropriate for this 
species because of its restricted range, limited distribution, and 
vulnerability to extinction; and because the threats are ongoing 
throughout its range at a level that places this species in danger of 
extinction now.
    Under the Act and our implementing regulations, a species may 
warrant listing if it is endangered or threatened throughout all or a 
significant portion of its range. Because we have determined that the 
Yangtze sturgeon is endangered throughout all of its range, we do not 
need to conduct an analysis of whether there is any significant portion 
of its range where the species is in danger of extinction or likely to 
become so in the foreseeable future. This is consistent with the Act 
because when we find that a species is currently in danger of 
extinction throughout all of its range (i.e., meets the definition of 
an ``endangered species''), the species is experiencing high-magnitude 
threats across its range or threats are so high in particular areas 
that they severely affect the species across its range. Therefore, the 
species is in danger of extinction throughout every portion of its 
range and an analysis of whether there is any significant portion of 
the range that may be in danger of extinction or likely to become so 
would not result in a different outcome.

Available Conservation Measures

    Conservation measures provided to species listed as endangered or 
threatened under the Act include recognition of conservation status, 
requirements for Federal protection, and prohibitions against certain 
practices. Recognition through listing encourages and results in public 
awareness and conservation actions by Federal and State governments in 
the United States, foreign governments, private agencies and groups, 
and individuals.
    Our regulations at 50 CFR part 402 implement the interagency 
cooperation provisions found under ESA Section 7. Under section 7(a)(1) 
of the ESA, federal agencies are to utilize, in consultation with and 
with the assistance of the Service, their authorities in furtherance of 
the purposes of the Act. Section 7(a)(2) of the Act, as amended, 
requires Federal agencies to ensure, in consultation with the Service, 
that ``any action authorized, funded, or carried out'' by such agency 
is not likely to jeopardize the continued existence of a listed species 
or result in destruction or adverse modification of its critical 
habitat. An ``action'' that is subject to the consultation provisions 
of section 7(a)(2) has been defined in our implementing regulations as 
``all activities or programs of any kind authorized, funded, or carried 
out, in whole or in part, by Federal agencies in the United States or 
upon the high seas.'' 50 CFR 402.02. With respect to this species, 
there are no ``actions'' known to require consultation under ESA 
Section 7(a)(2). Given the regulatory definition of ``action,'' which 
clarifies that it applies to ``activities or programs . . . in the 
United States or upon the high seas,'' the species is unlikely to be 
the subject of section 7 consultations, because the species conducts 
its entire life cycle in freshwater outside of the United States and is 
unlikely to be affected by U.S. Federal actions. Additionally, because 
the Yangtze sturgeon is not native to the United States, no critical 
habitat is being proposed for designation with this rule. 50 CFR 
424.12(g).
    Section 8(a) of the Act authorizes the provision of limited 
financial assistance for the development and management of programs 
that the Secretary of the Interior determines to be necessary or useful 
for the conservation of endangered or threatened species in foreign 
countries. Sections 8(b) and 8(c) of the Act authorize the Secretary to 
encourage conservation programs for foreign listed species, and to 
provide assistance for such programs, in the form of personnel and the 
training of personnel.
    Section 9 of the Act and our implementing regulations at 50 CFR 
17.21 set forth a series of general prohibitions that apply to all 
endangered wildlife. These prohibitions, in part, make it illegal for 
any person subject to the jurisdiction of the United States to ``take'' 
(which includes harass, harm, pursue, hunt, shoot, wound, kill, trap, 
capture, or collect; or to attempt any of these) endangered wildlife 
within the United States or upon the high seas. It is also illegal to 
possess, sell, deliver, carry, transport, or ship any such wildlife 
that has been taken illegally. In addition, it is illegal for any 
person subject to the jurisdiction of the United States to import; 
export; deliver, receive, carry, transport, or ship in interstate or 
foreign commerce, by any means whatsoever and in the course of 
commercial activity; or sell or offer for sale in interstate or foreign 
commerce any listed species. Certain exceptions apply to employees of 
the Service, the National Marine Fisheries Service, other Federal land 
management agencies, and State conservation agencies.
    We may issue permits under section 10 of the Act to carry out 
otherwise prohibited activities involving endangered wildlife under 
certain circumstances. Regulations governing permits for endangered 
species are codified at 50 CFR 17.22. With regard to endangered 
wildlife, a permit may be issued for the following purposes: For 
scientific purposes, to enhance the propagation or survival of the 
species, and for incidental take in connection with otherwise lawful 
activities. There are also certain statutory exemptions from the 
prohibitions, which are found in sections 9 and 10 of the Act.

Required Determination

Clarity of the Rule

    We are required by Executive Orders 12866 and 12988 and by the 
Presidential Memorandum of June 1, 1998, to write all rules in plain 
language. This means that each rule we publish must:
    (1) Be logically organized;
    (2) Use the active voice to address readers directly;
    (3) Use clear language rather than jargon;
    (4) Be divided into short sections and sentences; and
    (5) Use lists and tables wherever possible.
    If you feel that we have not met these requirements, send us 
comments by one

[[Page 61241]]

of the methods listed in ADDRESSES. To better help us revise the rule, 
your comments should be as specific as possible. For example, you 
should tell us the numbers of the sections or paragraphs that are 
unclearly written, which sections or sentences are too long, the 
sections where you feel lists or tables would be useful, etc.

National Environmental Policy Act (42 U.S.C. 4321 et seq.)

    We have determined that environmental assessments and environmental 
impact statements, as defined under the authority of the National 
Environmental Policy Act (42 U.S.C. 4321 et seq.), need not be prepared 
in connection with listing a species as an endangered or threatened 
species under the Endangered Species Act. We published a notice 
outlining our reasons for this determination in the Federal Register on 
October 25, 1983 (48 FR 49244).

References Cited

    A complete list of references cited in this rulemaking is available 
on the internet at http://www.regulations.gov and upon request from the 
Branch of Foreign Species, Ecological Services (see FOR FURTHER 
INFORMATION CONTACT).

Authors

    The primary authors of this proposed rule are the staff members of 
the Branch of Foreign Species, Ecological Services, Falls Church, VA.

List of Subjects in 50 CFR Part 17

    Endangered and threatened species, Exports, Imports, Reporting and 
recordkeeping requirements, Transportation.

Proposed Regulation Promulgation

    Accordingly, we propose to amend part 17, subchapter B of chapter 
I, title 50 of the Code of Federal Regulations, as set forth below:

PART 17--ENDANGERED AND THREATENED WILDLIFE AND PLANTS

0
1. The authority citation for part 17 continues to read as follows:

    Authority: 16 U.S.C. 1361-1407; 1531-1544; and 4201-4245, unless 
otherwise noted.

0
2. In Sec.  17.11(h), add an entry for ``Sturgeon, Yangtze'' to the 
List of Endangered and Threatened Wildlife in alphabetical order under 
FISHES to read as set forth below:


Sec.  17.11  Endangered and threatened wildlife.

* * * * *
    (h) * * *

----------------------------------------------------------------------------------------------------------------
                                                                                              Listing citations
           Common name                Scientific name        Where listed         Status        and applicable
                                                                                                    rules
----------------------------------------------------------------------------------------------------------------
 
                                                  * * * * * * *
Fishes
 
                                                  * * * * * * *
Sturgeon, Yangtze................  Acipenser dabryanus.  Wherever found......  E             [Insert Federal
                                                                                              Register citation
                                                                                              when published as
                                                                                              a final rule].
 
                                                  * * * * * * *
----------------------------------------------------------------------------------------------------------------

* * * * *

    Dated: November 15, 2017.
James W. Kurth,
Deputy Director, U.S. Fish and Wildlife Service, Exercising the 
Authority of the Director, U.S. Fish and Wildlife Service.
[FR Doc. 2017-27954 Filed 12-26-17; 8:45 am]
BILLING CODE 4333-15-P



                                                 61230             Federal Register / Vol. 82, No. 247 / Wednesday, December 27, 2017 / Proposed Rules

                                                 and willfully offer, pay, solicit, or                   Services (the Department), other Federal              included in any response to this
                                                 receive remuneration to induce or                       and State agencies, and those in the                  solicitation.
                                                 reward business reimbursable under                      health care industry.
                                                                                                                                                               A. Criteria for Modifying and
                                                 Federal health care programs. The
                                                                                                         C. Section 205 of the Health Insurance                Establishing Safe Harbor Provisions
                                                 offense is classified as a felony and is
                                                                                                         Portability and Accountability Act of                    In accordance with section 205 of
                                                 punishable by fines of up to $25,000
                                                 and imprisonment for up to 5 years. OIG                 1996                                                  HIPAA, we will consider a number of
                                                 may also impose civil money penalties,                     Section 205 of the Health Insurance                factors in reviewing proposals for new
                                                 in accordance with section 1128A(a)(7)                  Portability and Accountability Act of                 or modified safe harbor provisions, such
                                                 of the Act (42 U.S.C. 1320a–7a(a)(7)), or               1996 (HIPAA), Public Law 104–191                      as the extent to which the proposals
                                                 exclusion from Federal health care                      § 205 (the Act), § 1128D, 42 U.S.C.                   would affect an increase or decrease in:
                                                 programs, in accordance with section                    1320a–7d, requires the Department to                     • Access to health care services,
                                                 1128(b)(7) of the Act (42 U.S.C. 1320a–                                                                          • the quality of health care services,
                                                                                                         develop and publish an annual                            • patient freedom of choice among
                                                 7(b)(7)).                                               notification in the Federal Register
                                                    Because the statute, on its face, is so                                                                    health care providers,
                                                                                                         formally soliciting proposals for                        • competition among health care
                                                 broad, concern has been expressed for                   modifying existing safe harbors to the
                                                 many years that some relatively                                                                               providers,
                                                                                                         anti-kickback statute and for developing                 • the cost to Federal health care
                                                 innocuous commercial arrangements                       new safe harbors and Special Fraud                    programs,
                                                 may be subject to criminal prosecution                  Alerts.                                                  • the potential overutilization of
                                                 or administrative sanction. In response
                                                                                                            In developing safe harbors for a                   health care services, and
                                                 to the above concern, section 14 of the                                                                          • the ability of health care facilities to
                                                                                                         criminal statute, OIG thoroughly
                                                 Medicare and Medicaid Patient and                                                                             provide services in medically
                                                                                                         reviews the range of factual
                                                 Program Protection Act of 1987, Public                                                                        underserved areas or to medically
                                                 Law 100–93 § 14, specifically required                  circumstances that may fall within the
                                                                                                         proposed safe harbor subject area so as               underserved populations.
                                                 the development and promulgation of                                                                              In addition, we will consider other
                                                 regulations, the so-called ‘‘safe harbor’’              to uncover potential opportunities for
                                                                                                         fraud and abuse. Only then can OIG                    factors, including, for example, the
                                                 provisions, specifying various payment                                                                        existence (or nonexistence) of any
                                                 and business practices that, although                   determine, in consultation with the U.S.
                                                                                                         Department of Justice, whether it can                 potential financial benefit to health care
                                                 potentially capable of inducing referrals                                                                     professionals or providers that may take
                                                 of business reimbursable under Federal                  effectively develop regulatory
                                                                                                         limitations and controls that will permit             into account their decisions whether to
                                                 health care programs, would not be                                                                            (1) order a health care item or service or
                                                 treated as criminal offenses under the                  beneficial and innocuous arrangements
                                                                                                         within a subject area while, at the same              (2) arrange for a referral of health care
                                                 anti-kickback statute and would not                                                                           items or services to a particular
                                                 serve as a basis for administrative                     time, protecting Federal health care
                                                                                                         programs and their beneficiaries from                 practitioner or provider.
                                                 sanctions. OIG safe harbor provisions
                                                 have been developed ‘‘to limit the reach                abusive practices.                                    B. Criteria for Developing Special Fraud
                                                 of the statute somewhat by permitting                   II. Solicitation of Additional New                    Alerts
                                                 certain non-abusive arrangements, while                 Recommendations and Proposals                           In determining whether to issue
                                                 encouraging beneficial and innocuous                                                                          additional Special Fraud Alerts, we will
                                                 arrangements’’ (56 FR 35952, July 29,                      In accordance with the requirements                consider whether, and to what extent,
                                                 1991). Health care providers and others                 of section 205 of HIPAA, OIG last                     the practices that would be identified in
                                                 may voluntarily seek to comply with                     published a Federal Register                          a new Special Fraud Alert may result in
                                                 these provisions so that they have the                  solicitation notification for developing              any of the consequences set forth above,
                                                 assurance that their business practices                 new safe harbors and Special Fraud                    as well as the volume and frequency of
                                                 will not be subject to liability under the              Alerts on December 28, 2016 (81 FR                    the conduct that would be identified in
                                                 anti-kickback statute or related                        95551). As required under section 205                 the Special Fraud Alert.
                                                 administrative authorities. OIG safe                    of the Act, a status report of the
                                                                                                         proposals OIG received for new and                      Dated: December 12, 2017.
                                                 harbor regulations are found at 42 CFR
                                                                                                         modified safe harbors in response to                  Daniel R. Levinson,
                                                 part 1001.
                                                                                                         that solicitation notification is set forth           Inspector General.
                                                 B. OIG Special Fraud Alerts                             in Appendix F of OIG’s Fall 2017                      [FR Doc. 2017–27117 Filed 12–26–17; 8:45 am]
                                                   OIG periodically issues Special Fraud                 Semiannual Report to Congress.1 OIG is                BILLING CODE 4152–01–P
                                                 Alerts to give continuing guidance to                   not seeking additional public comment
                                                 health care providers with respect to                   on the proposals listed in Appendix F
                                                 practices OIG considers to be suspect or                at this time. Rather, this notification               DEPARTMENT OF THE INTERIOR
                                                 of particular concern. The Special Fraud                seeks additional recommendations
                                                 Alerts encourage industry compliance                    regarding the development of new or                   Fish and Wildlife Service
                                                 by giving providers guidance that can be                modified safe harbor regulations and
                                                 applied to their own practices. OIG                     new Special Fraud Alerts beyond those                 50 CFR Part 17
                                                 Special Fraud Alerts are published in                   summarized in Appendix F.                             [Docket No. FWS–HQ–ES–2017–0047;
                                                 the Federal Register and on our website                    A detailed explanation of                          4500090024]
daltland on DSKBBV9HB2PROD with PROPOSALS




                                                 and are intended for extensive                          justifications for, or empirical data
                                                 distribution.                                                                                                 RIN 1018–BC83
                                                                                                         supporting, a suggestion for a safe
                                                   In developing Special Fraud Alerts,                   harbor or Special Fraud Alert would be                Endangered and Threatened Wildlife
                                                 OIG relies on a number of sources and                   helpful and should, if possible, be                   and Plants; Listing the Yangtze
                                                 consults directly with experts in the
                                                                                                                                                               Sturgeon as an Endangered Species
                                                 subject field, including those within                     1 The OIG Semiannual Report to Congress can be
                                                 OIG, other agencies of the U.S.                         accessed through the OIG website at http://           AGENCY:     Fish and Wildlife Service,
                                                 Department of Health and Human                          oig.hhs.gov/publications/semiannual.asp.              Interior.


                                            VerDate Sep<11>2014   20:10 Dec 26, 2017   Jkt 244001   PO 00000   Frm 00039   Fmt 4702   Sfmt 4702   E:\FR\FM\27DEP1.SGM   27DEP1


                                                                   Federal Register / Vol. 82, No. 247 / Wednesday, December 27, 2017 / Proposed Rules                                           61231

                                                 ACTION:   Proposed rule.                                and Wildlife Service, MS: ES, 5275                    and existing regulations that may be
                                                                                                         Leesburg Pike, Falls Church, VA 22041–                addressing those threats.
                                                 SUMMARY:    We, the U.S. Fish and                       3803; telephone, 703–358–2171;                           (4) Additional information concerning
                                                 Wildlife Service (Service), announce a                  facsimile, 703–358–2499. If you use a                 the historical and current status, range,
                                                 proposed rule and a 12-month finding                    telecommunications device for the deaf                distribution, and population size of the
                                                 on a petition to list the Yangtze sturgeon              (TDD), call the Federal Relay Service at              species, including the locations of any
                                                 (Acipenser dabryanus) as an endangered                  800–877–8339.                                         additional populations of the species.
                                                 species under the Endangered Species                                                                             Please include sufficient information
                                                                                                         SUPPLEMENTARY INFORMATION:
                                                 Act of 1973, as amended (Act). Loss of                                                                        with your submission (such as scientific
                                                 individuals due to overharvesting on the                Information Requested                                 journal articles or other publications) to
                                                 Yangtze River is the main factor that                                                                         allow us to verify any scientific or
                                                                                                         Public Comments
                                                 contributed to the historical decline of                                                                      commercial information you include.
                                                 the species. Despite conservation efforts,                Our intent, as required by the Act (16
                                                                                                         U.S.C. 1531 et seq.), is to use the best                 Please note that submissions merely
                                                 this species is still currently in decline
                                                                                                         available scientific and commercial data              stating support for or opposition to the
                                                 due primarily to the effects of dams and
                                                                                                         as the foundation for all endangered and              action under consideration without
                                                 bycatch. If we finalize this rule as
                                                                                                         threatened species classification                     providing supporting information,
                                                 proposed, it would extend the Act’s
                                                                                                         decisions. Further, we want any final                 although noted, will not be considered
                                                 protections to this species. We seek
                                                                                                         rule resulting from this proposal to be               in making a determination, as section
                                                 information from the public on this
                                                                                                         as accurate and effective as possible.                4(b)(1)(A) of the Act directs that
                                                 proposed rule and the status review for
                                                                                                         Therefore, we invite the range country,               determinations as to whether any
                                                 this species.
                                                                                                         governmental agencies, the scientific                 species is an endangered or threatened
                                                 DATES: We will consider comments and                                                                          species must be made ‘‘solely on the
                                                 information received or postmarked on                   community, industry, and other
                                                                                                         interested parties to submit comments                 basis of the best scientific and
                                                 or before February 26, 2018. Comments                                                                         commercial data available.’’
                                                 submitted electronically using the                      regarding this proposed rule. Comments
                                                                                                         should be as specific as possible.                       You may submit your comments and
                                                 Federal eRulemaking Portal (see                                                                               materials concerning this proposed rule
                                                 ADDRESSES, below) must be received by                     Before issuing a final rule to
                                                                                                         implement this proposed action, we will               by one of the methods listed in
                                                 11:59 p.m. Eastern Time on the closing                                                                        ADDRESSES. We request that you send
                                                 date. We must receive requests for                      take into account all comments and any
                                                                                                         additional relevant information we                    comments only by the methods
                                                 public hearings, in writing, at the                                                                           described in ADDRESSES.
                                                 address shown in FOR FURTHER                            receive. Such communications may lead
                                                                                                         to a final rule that differs from our                    If you submit information via http://
                                                 INFORMATION CONTACT by February 12,
                                                                                                         proposal. For example, new information                www.regulations.gov, your entire
                                                 2018.                                                                                                         submission—including any personal
                                                                                                         or analysis may lead to a threatened
                                                 ADDRESSES: Document availability: This                  status instead of an endangered status                identifying information—will be posted
                                                 finding is available on the internet at                 for this species, or we may determine                 on the website. If your submission is
                                                 http://www.regulations.gov at Docket                    that this species does not warrant listing            made via a hardcopy that includes
                                                 No. FWS–HQ–ES–2017–0047.                                based on the best available information               personal identifying information, you
                                                    Written comments: You may submit                     when we make our determination. All                   may request at the top of your document
                                                 comments by one of the following                        comments, including commenters’                       that we withhold this information from
                                                 methods:                                                names and addresses, if provided to us,               public review. However, we cannot
                                                    (1) Electronically: Go to the Federal                                                                      guarantee that we will be able to do so.
                                                                                                         will become part of the administrative
                                                 eRulemaking Portal: http://                                                                                   We will post all hardcopy submissions
                                                                                                         record. For this species, we particularly
                                                 www.regulations.gov. In the Search box,                                                                       on http://www.regulations.gov.
                                                                                                         seek comments concerning:
                                                 enter FWS–HQ–ES–2017–0047, which                                                                                 Comments and materials we receive,
                                                                                                           (1) The species’ biology, ranges, and
                                                 is the docket number for this                                                                                 as well as supporting documentation we
                                                                                                         population trends, including:
                                                 rulemaking. Then, in the Search panel                     (a) Biological or ecological                        used in preparing this proposed rule,
                                                 on the left side of the screen, under the               requirements of the species, including                will be available for public inspection
                                                 Document Type heading, click on the                     habitat requirements for feeding,                     on http://www.regulations.gov, or by
                                                 Proposed Rules link to locate this                      breeding, and sheltering;                             appointment, during normal business
                                                 document. You may submit a comment                        (b) Genetics and taxonomy;                          hours, at the U.S. Fish and Wildlife
                                                 by clicking on ‘‘Comment Now!’’                           (c) Historical and current range,                   Service, Headquarters Office (see FOR
                                                    (2) By hard copy: Submit by U.S. mail                including distribution patterns;                      FURTHER INFORMATION CONTACT).
                                                 or hand-delivery to: Public Comments                      (d) Historical and current population
                                                 Processing, Attn: FWS–HQ–ES–2017–                                                                             Public Hearing
                                                                                                         levels, and current and projected trends;
                                                 0047; U.S. Fish and Wildlife Service,                   and                                                     Section 4(b)(5) of the Act provides for
                                                 MS: BPHC, 5275 Leesburg Pike, Falls                       (e) Past and ongoing conservation                   one or more public hearings on this
                                                 Church, VA 22041–3803.                                  measures for the species, its habitat, or             proposal, if requested. Requests must be
                                                    We request that you send comments                    both.                                                 received by the date listed above in
                                                 only by the methods described above.                      (2) Factors that may affect the                     DATES. Such requests must be sent to the
                                                 We will post all comments on http://                    continued existence of the species,                   address shown in FOR FURTHER
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                                                 www.regulations.gov. This generally                     which may include habitat modification                INFORMATION CONTACT. We will schedule
                                                 means that we will post any personal                    or destruction, overutilization, disease,             public hearings on this proposal, if any
                                                 information you provide us (see Public                  predation, the inadequacy of existing                 are requested, and announce the dates,
                                                 Comments, below, for more                               regulatory mechanisms, or other natural               times, and places of those hearings, as
                                                 information).                                           or manmade factors.                                   well as how to obtain reasonable
                                                 FOR FURTHER INFORMATION CONTACT:                          (3) Biological, commercial trade, or                accommodations, in the Federal
                                                 Janine Van Norman, Branch of Foreign                    other relevant data concerning any                    Register and local newspapers at least
                                                 Species, Ecological Services, U.S. Fish                 threats (or lack thereof) to the species              15 days before the hearing.


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                                                 61232             Federal Register / Vol. 82, No. 247 / Wednesday, December 27, 2017 / Proposed Rules

                                                 Peer Review                                             within the jurisdiction of the Service.               Species Description
                                                   In accordance with our joint policy on                Therefore, in April 2012, the Service                    The Yangtze sturgeon is a freshwater
                                                 peer review published in the Federal                    notified WildEarth Guardians that we                  fish species that attains a maximum size
                                                 Register on July 1, 1994 (59 FR 34270),                 have jurisdiction over the 10 sturgeon                of around 130 centimeters (4.3 feet (ft))
                                                 we solicited the expert opinion of six                  species, listed below.                                and a maximum weight of about 16
                                                 appropriate and independent specialists                   On September 24, 2013, we published                 kilograms (35 pounds) (Billiard and
                                                 for peer review of the Species Status                   in the Federal Register (78 FR 58507) a               Lecointre 2000, p. 368; Zhuang et al.
                                                 Assessment (SSA) that provides the                      90-day finding that found that the                    1997, pp. 257, 259). The species has a
                                                 biological basis for this proposed listing              petition presented substantial scientific             triangular head, an elongated snout, and
                                                 determination. The purpose of peer                      and commercial information indicating                 large blowholes (Gao et al. 2009b, p.
                                                 review is to ensure that our listing                    that the petitioned action may be                     117). Yangtze sturgeons have tactile
                                                 determinations are based on                             warranted for the following 10 sturgeon               barbels at the front of their mouths that
                                                 scientifically sound data, assumptions,                 species included in the petition:                     they use to dig for food. On the dorsal
                                                 and analyses. Their comments and                        Siberian sturgeon (Acipenser baerii),                 side, the Yangtze sturgeons are dark
                                                 suggestions can be found at (https://                   Yangtze sturgeon (A. dabryanus),                      gray, brownish-gray, or yellow-gray in
                                                 www.fws.gov/endangered/improving_                       Russian sturgeon (A. gueldenstaedtii),                color. The rest of the body is milky
                                                 ESA/peer_review_process.html).                          ship sturgeon (A. nudiventris), Persian               white in color (Zhuang et al. 1997, p.
                                                                                                         sturgeon (A. persicus), Amur sturgeon                 259).
                                                 Previous Federal Actions
                                                    On March 12, 2012, the National                      (A. schrenckii), stellate sturgeon (A.                Taxonomy
                                                 Marine Fisheries Service (NMFS)                         stellatus), Syr-Darya sturgeon                           Historically, the Yangtze sturgeon
                                                 received a petition dated March 8, 2012,                (Pseudoscaphirhynchus fedtschenkoi),                  coexisted alongside the Chinese
                                                 from WildEarth Guardians and Friends                    dwarf sturgeon (P. hermanni), and Amu                 sturgeon in the Yangtze River. Initial
                                                 of Animals to list as endangered or                     Darya sturgeon (P. kaufmanni). This                   attempts to differentiate the two species
                                                 threatened under the Act the following                  document constitutes our review and                   included using morphological measures.
                                                 15 sturgeon species: Adriatic sturgeon                  determination of the status of the                    However, morphological characteristics
                                                 (Acipenser naccarii); Baltic sturgeon (A.               Yangtze sturgeon, our publication of our              can be influenced by differences in
                                                 sturio); Russian sturgeon (A.                           12-month finding on this species, and                 environmental conditions. For example,
                                                 gueldenstaedtii); ship sturgeon (A.                     our proposed rule to list this species.               wild Yangtze sturgeon display grey
                                                 nudiventris); Persian sturgeon (A.                                                                            color on the sides of their bodies while
                                                                                                         Background
                                                 persicus); stellate sturgeon (A. stellatus);                                                                  those bred in captivity sometimes
                                                 Siberian sturgeon (A. baerii); Yangtze                     A thorough review of the taxonomy,                 display a darker color (Li et al. 2015, p.
                                                 sturgeon (A. dabryanus); Chinese                        life history, ecology, and overall                    186).
                                                 sturgeon (A. sinensis); Sakhalin                        viability of the Yangtze sturgeon is                     Due to similarities in their
                                                 sturgeon (A. mikadoi); Amur sturgeon                    presented in the Species Status                       morphology, the two sturgeons were not
                                                 (A. schrenckii); Kaluga sturgeon (Huso                  Assessment (SSA) for the Yangtze                      identified as separate species until 1869,
                                                 dauricus); Syr Darya sturgeon                           sturgeon (Service 2017; available at                  based on collection of specimens
                                                 (Pseudoscaphirhynchus fedtschenkoi);                    http://www.regulations.gov at Docket                  obtained from the Yangtze River
                                                 dwarf sturgeon (P. hermanni); and Amu                   No. FWS–HQ–ES–2017–0047). The SSA                     (Zhuang et al. 1997, p. 257). Multiple
                                                 Darya sturgeon (P. kaufmanni). The                      documents the results of the                          studies since have shown the Yangtze
                                                 petition states that all 15 petitioned                                                                        and Chinese sturgeons are very closely
                                                                                                         comprehensive biological status review
                                                 sturgeon species are affected by similar                                                                      related and can be considered to be
                                                                                                         for the Yangtze sturgeon and provides
                                                 threats, which are primarily: Legal and                                                                       sister species (Krieger et al. 2008, p. 41;
                                                                                                         an account of the species’ overall
                                                 illegal harvest for meat and/or roe;                                                                          Zhu et al. 2008, p. 32; Zhang et al. 2000,
                                                                                                         viability through forecasting of the
                                                 habitat loss and degradation, including                                                                       p. 136). A study of mitochondrial DNA
                                                                                                         species’ condition in the future (Service             found that Yangtze and Chinese
                                                 dams or dam construction; and water
                                                                                                         2017, entire). In the SSA, we summarize               sturgeon have a divergence value of 0.3
                                                 pollution. The petition is available at
                                                 https://www.regulations.gov/                            the relevant biological data and a                    percent. This is in contrast to Chinese
                                                 document?D=FWS-HQ-ES-2013-0051-                         description of past, present, and likely              sturgeon and starry sturgeon (Acipenser
                                                 0003.                                                   future stressors and conduct an analysis              stellatus), which have a divergence
                                                    NMFS acknowledged receipt of this                    of the viability of the species. The SSA              value of 7.7 percent (Zhang et al. 2000,
                                                 petition in a letter dated April 14, 2012,              provides the scientific basis that informs            pp. 133–134). While these results
                                                 and informed the petitioners that NMFS                  our regulatory decision regarding                     suggest that Yangtze and Chinese
                                                 would determine, under section 4 of the                 whether this species should be listed as              sturgeon are closely related species,
                                                 Act, whether the petition presents                      an endangered or threatened species                   taxonomic confusion regarding the two
                                                 substantial scientific or commercial                    under the Act. This decision involves                 species continued well into the 1960s
                                                 information indicating that the                         the application of standards within the               (Li J. et al. 2015, p. 186). In addition to
                                                 petitioned action may be warranted.                     Act, its implementing regulations, and                genetic similarities, Yangtze and
                                                 Although the petition was initially sent                Service policies (see Determination,                  Chinese sturgeon share the same habitat
                                                 to NMFS, as a result of subsequent                      below). The SSA contains the risk                     and multiple studies suggest that
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                                                 discussions between NMFS and the                        analysis on which this determination is               Yangtze sturgeon may be a landlocked
                                                 Service regarding the August 28, 1974,                  based, and the following discussion is a              ecotype of the Chinese sturgeon (Kynard
                                                 Memorandum of Understanding                             summary of the results and conclusions                2016, pers. comm.; Li J. et al. 2015, p.
                                                 pertaining to ‘‘Jurisdictional                          from the SSA. We solicited peer review                186; Krieger et al. 2008, p. 42; Zhang et
                                                 Responsibilities and Listing Procedures                 of the draft SSA from six qualified                   al. 2000, p. 136).
                                                 Under the Endangered Species Act of                     experts. We received responses from                      Despite similarities between Yangtze
                                                 1973,’’ we have determined that 10 of                   one of the reviewers, and we modified                 and Chinese sturgeon, there are
                                                 the 15 petitioned sturgeon species are                  the SSA as appropriate.                               differences between the two species.


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                                                                   Federal Register / Vol. 82, No. 247 / Wednesday, December 27, 2017 / Proposed Rules                                           61233

                                                 Yangtze and Chinese sturgeon can be                     days before dispersing downstream                     River segment, which stretches from the
                                                 differentiated by the different ecoregion               (Kynard et al. 2003, pp. 33–34; Zhuang                headwater in Yushu in the Tibetan
                                                 they inhabit. The Chinese sturgeon is an                et al. 1997, p. 262). Yangtze sturgeons               Plateau to Yibin, a distance of about
                                                 anadromous species (species that spawn                  do not start their migration downriver                2,300 km (1,429 mi), and the upper
                                                 in freshwater and spend most of its life                until they become juveniles.                          Yangtze River, which stretches from
                                                 at sea) that migrates between coastal                      Juvenile sturgeons disperse around                 Yibin to the Three Gorges region at
                                                 feeding grounds and spawning grounds                    100 to 200 kilometers (km) (62 to 124                 Yichang, a distance of about 1,000 km
                                                 in both the Yangtze River and the Pearl                 miles (mi)) downstream from their                     (621 mi) (Cheng et al. 2015, p. 571; Jiang
                                                 River. On the other hand, the Yangtze                   spawning ground and arrive in                         et al. 2008, p. 1471; Fu et al. 2003, p.
                                                 sturgeon is a potamodromous species (a                  backwater pools and sandy shallows                    1651). Four major tributaries feed into
                                                 species that conducts its entire life cycle             with low velocity flow and rich mud                   the upper Yangtze. They are: the Min,
                                                 in freshwater) that migrates between                    and sand substrate where they feed on                 Tuo, Jialing, and the Wu River (Chen Z.
                                                 feeding grounds and spawning grounds                    insects, aquatic plants, and small fish               et al. 2001, p. 78). The middle reach is
                                                 entirely within the Yangtze River basin                 (Zhang et al. 2011, p. 184; Zhuang et al.             from Yichang to Hukou, a distance of
                                                 (Kynard et al. 2003, p. 28; Zhuang et al.               1997, p. 259). During the spring flood on             about 950 km (590 mi). The Yangtze
                                                 1997, pp. 257–295).                                     the main stem of the Yangtze River,                   River widens in this segment and is
                                                    In addition to differences in their life             juveniles will move to the tributaries to             identified by multiple large lakes,
                                                 history, these two species can also be                  feed. Young sturgeons will remain in                  including Lake Dongting and Lake
                                                 differentiated based on their                           these feeding reaches until they reach                Poyang. The lower reach stretches from
                                                 mitochondrial and nuclear DNA (Li J. et                 maturity (4 to 6 years for males and 6                Hukou to the mouth of the river at
                                                 al. 2015, pp. 185, 194). Therefore,                     to 8 years for females) after which they              Shanghai, a distance of about 930 km
                                                 despite possessing morphological and                    begin migrating upstream towards the                  (577 mi) (Fu et al. 2003, p. 1651).
                                                 genetic similarities, there are differences             spawning ground during the spring                        Historically, the Yangtze sturgeon was
                                                 in the habitat, life history                            flood (Zhuang et al. 1997, p. 261).                   found in the lower portion of the Jinsha
                                                 characteristics, and genetic makeup                                                                           River and the upper, middle, and lower
                                                 between the two species. We thus                        Habitat                                               reaches of the Yangtze River, a distance
                                                 accept the Yangtze sturgeon as a                           The Yangtze sturgeon is found in                   of about 1,300 km (807 mi) (Wu et al.
                                                 separate species as classified below:                   sandy shoal with silt ground and gentle               2014, p. 5). The majority of historical
                                                 Class: Actinopterygii                                   to moderate water flow (Bemis and                     sightings occurred in the lower Jinsha
                                                 Order: Acipenseriformes                                 Kynard 1997, p. 169; Zhuang et al. 1997,              and upper Yangtze River with
                                                 Family: Acipenseridae                                   p. 259). The spawning habitat for the                 occasional sightings in the middle and
                                                 Species: Acipenser dabryanus Duméril,                  Yangtze sturgeon is a riverbed that                   lower Yangtze (Zhuang et al. 1997, p.
                                                      1869                                               contains larger boulders, pebbles, clear              259). The species has also been found in
                                                 Biology and Life History                                water with a velocity of 1.2 to 1.5 meters            major tributaries that feed into the
                                                                                                         (m) per second (3.9 to 4.9 ft per second),            upper Yangtze including the Min, Tuo,
                                                    Although the Yangtze sturgeon’s life                                                                       and Jialing (Artyukhin et al. 2007, p.
                                                                                                         and a depth of 5 to 15 m (16 to 49 ft)
                                                 history is similar to other sturgeon                                                                          370). There have also been sightings of
                                                                                                         (Zhuang et al. 1997, p. 261). The
                                                 species, there are key differences. Based                                                                     the species in Dongting Lake and
                                                                                                         presence of large boulders ensures there
                                                 on the best available information, much                                                                       Poyang Lake in the middle and lower
                                                                                                         is sufficient interstitial space between
                                                 of what is known about the Yangtze                                                                            reaches, respectively (Zhuang et al.
                                                                                                         the rocks for eggs to adhere to. At the
                                                 sturgeon’s life history comes from                                                                            1997, p. 259). One sighting took place as
                                                                                                         same time, smaller pebbles and gravel
                                                 research on the more numerous and                                                                             far downstream as Anhui province, a
                                                                                                         fill in the interstitial space so that water
                                                 studied Chinese sturgeon due to                                                                               distance of more than 2,000 km (1,242
                                                                                                         flowing through the space is not too
                                                 similarities in morphology, taxonomy,                                                                         mi) downstream from Yibin (Zhuang et
                                                                                                         high to prevent adherence (Du et al.
                                                 and life history between the two                                                                              al. 1997, p. 261). The species’ spawning
                                                                                                         2011, p. 257). Sufficient velocity is also
                                                 species. Yangtze sturgeons spawn in the                                                                       reach is understood by Yangtze sturgeon
                                                                                                         needed to prevent excess buildup of
                                                 spring from March to April, with a                                                                            researchers to have occurred from
                                                                                                         gravel in the interstitial space (Du et al.
                                                 smaller late fall/early winter spawning                                                                       Maoshui in the lower Jinsha River to
                                                                                                         2011, p. 262). If there is insufficient
                                                 period occurring from October to                                                                              Hejiang in the upper Yangtze River
                                                                                                         interstitial space, eggs will not adhere to
                                                 December (Qiwei 2010, p. 3; Gao et al.                                                                        (Zhang et al. 2011, p. 184).
                                                                                                         the boulders on the riverbed. If there is
                                                 2009b, p. 117; Kynard et al. 2003, p. 28).
                                                                                                         too much space, the water current will                Current Range
                                                 Spawning migration begins when water
                                                                                                         be too strong and the eggs will be                       The Yangtze sturgeon’s current range
                                                 level, flow velocity, and silt content
                                                                                                         washed away. Therefore, suitable                      is limited to the upper Yangtze River
                                                 enters a downward trend (Zhang H. et
                                                                                                         sturgeon habitat has specific                         and its tributaries in the reaches
                                                 al. 2012, p. 4).
                                                    At the spawning site, female Yangtze                 requirements for velocity and riverbed                between Yibin and Yichang, a distance
                                                 sturgeons can lay between 57,000 to                     composition to ensure successful                      of about 1,000 km (Wu et al. 2014, p. 5;
                                                 102,000 eggs. These eggs, when mature,                  spawning.                                             Dudgeon 2010, p. 128; Huang et al.
                                                 are gray to black and range from 2.7 to                 Distribution                                          2011, p. 575; Zhang et al. 2011, p. 181;
                                                 3.4 millimeters (0.11 to 0.13 inches) in                                                                      Artyukhin et al. 2007, p. 370). The
                                                 diameter. The eggs are sticky and firmly                Historical Range                                      completion of the Gezhouba Dam in
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                                                 adhere to the space between pebbles                        As its name implies, the Yangtze                   1981 at Yichang prevented the upstream
                                                 and boulders, known as the                              sturgeon is found in the Yangtze River                migration of adults to the species’
                                                 ‘‘interstitial’’ space, on the riverbed (Gao            (Wu et al. 2014, p. 5). The river is more             spawning ground (Zhuang et al. 1997, p.
                                                 et al. 2009b, p. 117; Zhuang et al. 1997,               than 6,397 km (3,975 mi) in length and                261). As a result of the construction of
                                                 p. 261). Larvae emerge from the eggs                    is divided into three segments. The                   Gezhouba Dam, the species may have
                                                 about 115 to 117 hours after                            upper reach, which span a total of about              been extirpated in reaches below the
                                                 fertilization, and they remain at the                   4,300 km (2,671 mi), is further sub-                  dam (Li et al. 2015, p. 186; Zhu et al.
                                                 spawning ground for around 12 to 30                     divided into two segments: the Jinsha                 2008, p. 30). That said, from 2014–2017,


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                                                 61234             Federal Register / Vol. 82, No. 247 / Wednesday, December 27, 2017 / Proposed Rules

                                                 fishermen below Gezhouba Dam                            caught either by researchers or by                    Connectivity
                                                 accidently captured four adult Yangtze                  fishermen in the upper Yangtze River                     Dam construction on Yangtze River
                                                 sturgeons, suggesting the presence of a                 (Wu et al. 2014, pp. 3–5). These results              limits the ability of the Yangtze sturgeon
                                                 very small remnant population (Du                       indicate that restocked sturgeon have a               to migrate between spawning and
                                                 2017, pers. comm.). Due to Gezhouba                     very low survival rate. Although we do                feeding reaches. Dam construction on
                                                 Dam’s smaller size, the reservoir for the               not have population estimates for the                 the Yangtze occurs on both the upper
                                                 Gezhouba Dam is relatively small                        species, based on the fact that there has             and lower end of the species’ current
                                                 (Kynard 2017, pers. comm.) However,                     been no observable natural reproduction               range. In the middle Yangtze River, the
                                                 the Three Gorges Dam, located slightly                  since the 2000s and the low survival                  construction of Gezhouba Dam in 1981
                                                 upstream from Gezhouba Dam, and its                     rate of restocked sturgeon, the species               prevented migration of adults
                                                 reservoir changed the hydrology of the                  population in the Yangtze River is likely             downstream of the dam from being able
                                                 Yangtze. Construction on the Three                      to be very low when compared to                       to migrate to the species’ spawning
                                                 Gorges Dam began in 2003 and was                        historical numbers (Du et al. 2014, p. 1;             ground in the upper Yangtze near Yibin
                                                 completed in 2009. The reservoir, which                 Wu et al. 2014, p. 4).
                                                                                                                                                               (Miao et al. 2015, p. 2351; Dudgeon
                                                 extends 600 km (372 mi) upstream,
                                                                                                         Summary of Threats and Conservation                   2010, p. 128; Fang et al. 2006, p. 375;
                                                 further reduced the species’ range by
                                                                                                         Measures That Affect the Species                      Zhuang et al. 1997, p. 261). Although
                                                 modifying reaches above Three Gorges
                                                                                                           The Act directs us to determine                     the reaches below Gezhouba Dam might
                                                 Dam to a lentic (still water) system
                                                                                                         whether any species is an endangered                  be suitable for the species, at present
                                                 (Chen D. et al. 2009, p. 341; Fu et al.
                                                                                                         species or a threatened species because               there has been no observed natural
                                                 2003, p. 1650). Loss of lotic (rapidly
                                                                                                         of any factors affecting its continued                reproduction below Gezhouba Dam (Du
                                                 moving water) ecosystem reduces the
                                                                                                         existence. We completed a                             2017, pers. comm.). The construction of
                                                 quality of remaining habitat for the
                                                                                                         comprehensive assessment of the                       Three Gorges Dam created a reservoir,
                                                 species (Kynard 2016, pers. comm.;
                                                 Cheng et al. 2015, pp. 570, 576). On the                biological status of the Yangtze                      which affected individuals of the
                                                 lower Jinsha River, in the upstream                     sturgeon, and prepared a report of the                species upstream. The Three Gorges
                                                 portion of the species’ historical range,               assessment, which provides a thorough                 Dam reservoir, which extended 600 km
                                                 the construction of the Xiangjiaba Dam,                 account of the species’ overall viability.            upstream from the dam, transformed the
                                                 which was completed in 2008, limited                    In this section, we summarize the                     area into unsuitable habitat (Kynard
                                                 the species’ spawning ground to areas                   conclusions of that species status                    2016, pers. comm.; Cheng et al. 2015, p.
                                                 below the dam (Zhang et al. 2011, pp.                   assessment, which can be accessed at                  570; Miao et al. 2015, p. 2351). After the
                                                 183–184). The species continues to                      Docket No. FWS–HQ–ES–2017–0047 on                     construction of the reservoir, the species
                                                 ascend the major tributaries in the                     http://www.regulations.gov.                           rarely moves to reaches below
                                                 upper Yangtze, including the Min, Tuo,                                                                        Chongqing, a distance of approximately
                                                                                                         Dams on the Yangtze River and Its                     500 km (Wu et al. 2015, p. 5).
                                                 and Jialing River (Huang et al. 2011, p.                Effects
                                                 575; Artyukhin et al. 2007, p. 370).                                                                             Meanwhile, the construction of
                                                                                                            The topography of the upper Yangtze                Xiangjiaba Dam on the lower Jinsha
                                                 Historical and Current Population                       River basin is characterized by                       River segment occurred on part of the
                                                    The Yangtze sturgeon was historically                mountains of varying heights. The                     historical spawning reach of the species.
                                                 abundant and was commercially                           change in elevation between the upper                 Xiangjiaba Dam is a barrier to all fish
                                                 harvested up to the 1970s (Lu et al.                    Yangtze to the lower Yangtze amounts                  species and prevents the migration to
                                                 2015, p. 89; Zhang et al. 2013, p. 409;                 to 3,280 m (10,761 ft), which makes the               areas above or the below the dam (Wu
                                                 Kynard et al. 2003, p. 27). The majority                upper Yangtze River an ideal place for                et al. 2014, p. 2). However, the species
                                                 (80 percent) of harvest of Yangtze                      hydroelectric projects (Fan et al. 2006,              may be able to use spawning reaches
                                                 sturgeon took place during the 1950s to                 p. 33). The growth of dam construction                below the dam (Fan et al. 2006, p. 36).
                                                 the 1970s. However, overharvesting                      in China has accelerated during the past              That said, a dam located upstream from
                                                 during this time period led to a sharp                  decades. From the 1970s to the 1990s,                 the species’ habitat affects the species
                                                 decline in the population size (Kynard                  an average of 4.4 large reservoirs                    downstream by altering water
                                                 et al. 2003, p. 27).                                    (capacity greater than 0.1 km3) were                  temperature and sedimentation rate,
                                                    While there may have been natural                    constructed per year. By the 2000s, this              which we discuss below (Fan et al.
                                                 recruitment of the species in the 1990s,                number had increased to an average                    2006, p. 36).
                                                 no natural recruitment has been                         construction rate of 11.8 large reservoirs               In addition to dams currently present
                                                 observed in the wild since the 2000s                    per year. By 2011, China possessed 552                on the lower Jinsha and upper Yangtze
                                                 (Du et al. 2014, p. 1; Wu et al. 2014, p.               large reservoirs, 3,269 medium                        River, in the early 2000s, a proposal was
                                                 1). The population is currently being                   reservoirs (capacity of 0.01–0.1 km 3),               presented for the construction of the
                                                 sustained by artificial restocking.                     and 84,052 small reservoirs (capacity of              Xiaonanhai Dam, which is to be located
                                                 Between the years of 2010–2013, 7,030                   0.0001–0.01 km 3); of this number, the                upstream from Chongqing. If built, this
                                                 Yangtze sturgeon juveniles were                         Yangtze River basin contained 45,000                  dam will create a barrier between the
                                                 released into the middle and upper                      dams and reservoirs, including 143                    species’ last known spawning ground
                                                 Yangtze River in two to three batches                   dams having large reservoirs, or a                    and feeding reach, which, depending on
                                                 each year (Wu et al. 2014, p. 3).                       quarter of all large reservoirs in China              design, could have a negative impact on
                                                 Restocking efforts have been ongoing in                 (Miao et al. 2015, p. 2350; Mueller et al.            the species (Cheng et al. 2015, p. 579).
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                                                 the reaches below Gezhouba Dam since                    2008, p. 233). The construction of dams               However, at present, China’s Ministry of
                                                 2014 (Hu 2017, pers. comm.). However,                   and reservoirs have multiple and broad                Environmental Protection has rejected
                                                 restocked sturgeons suffer from low                     effects on the Yangtze sturgeon and its               the proposal and any future dam
                                                 fitness; most notably, they lack the                    habitat, including limiting connectivity              projects on the last stretch of free-
                                                 ability to survive to reproductive age.                 between spawning and feeding reaches;                 flowing Yangtze River due to
                                                 Capture data obtained from the releases                 altering water temperature, water                     environmental impacts (Chang 2016,
                                                 in 2010–2013 found that 95 days after                   discharge, and velocity rates; and                    pers. comm.; Kynard 2016, pers. comm.;
                                                 restocking, no restocked sturgeons were                 changing sediment concentration.                      Mang 2015, unpaginated).


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                                                                   Federal Register / Vol. 82, No. 247 / Wednesday, December 27, 2017 / Proposed Rules                                             61235

                                                    While the rejection of the proposal to               After the construction of the Three                   eggs (Du et al. 2011, pp. 261–262; Bemis
                                                 construct the Xiaonanhai Dam is good                    Gorges Dam, mean flow rate varies                     and Kynard 1997, p. 169).
                                                 for Yangtze sturgeon, the country’s                     between 12,780 m3/s in high flow years                   Historically, discharge rates and
                                                 twelfth 5-year plan stated that                         and 6,414 m3/s in low flow years (Chen                sedimentation load were in alignment
                                                 renewable resources should make up 15                   and Wu 2011, p. 384). For Chinese                     with precipitation rates. A low
                                                 percent of all energy generated in China                sturgeon, successful spawning occurs                  discharge rate results in low
                                                 with 9 percent coming from                              when water discharge is between 7,000                 sedimentation load. High discharge
                                                 hydroelectric source. This plan                         and 26,000 m3/s. This means that                      rates lead to higher sediment load, as
                                                 translates to an additional 230 gigawatt                although flow rate during high flow                   high flows are able to transport more
                                                 (GW) of power generated via                             years remains in the optimal discharge                sediments downstream (Chen Z. et al.
                                                 hydroelectric dam. This target is a very                rate for Chinese sturgeon spawning,                   2001, pp. 88–89). However, dams cause
                                                 ambitious one, given that Three Gorges                  discharge rates during low flow years                 discharge and sedimentation rates to go
                                                 Dam generates 18 GW of power per year                   could have a negative impact on                       out of alignment. While discharge rates
                                                 (Dudgeon 2011, p. 1496). Furthermore,                   spawning success rates of both sturgeon               remain aligned with precipitation rate,
                                                 although the plan to construct the                      species (Chen and Wu 2011, p. 385).                   the sedimentation load pattern displays
                                                 Xiaonanhai Dam has been rejected,                          While we do not have long-term                     a 2-month delay due to sediment being
                                                 plans to construct dams on the Jinsha                   historical data for water discharge rate              trapped behind the dams. When the
                                                 River as part of a 12-dam cascade are                   for the Yangtze sturgeon at Yibin, the                spring flood occurs, numerous dams
                                                 still proceeding (Dudgeon 2010, p. 129).                flow rate at Chongqing during the years               release highly concentrated sediment
                                                                                                         1950–2000 was between 4,540 m3/s and                  downstream all at once, resulting in an
                                                 Water Temperature                                                                                             asymmetrical sediment load pattern
                                                                                                         11,000 m3/s (Zhang et al. 2011, p. 183).
                                                    Historically, dams negatively affect                                                                       (Chen Z. et al. 2001, p. 90). The effects
                                                                                                         Since Chongqing is farther upstream
                                                 the reproductive success of Yangtze                                                                           of sediment load patterns on the
                                                                                                         from Yichang, this flow rate may be the
                                                 sturgeon by altering water temperature                                                                        species’ habitat occur at two stages:
                                                 flowing through the species’ habitat.                   river’s natural rate at this section of the
                                                                                                                                                               Release of sediments during high river
                                                 Water temperature influences the                        Yangtze. However, following the
                                                                                                                                                               stages and reduced sediment size and
                                                 reproductive success of the Yangtze                     impoundment by the Xiangjiaba Dam in
                                                                                                                                                               load over time (Dudgeon 2011, pp. 1488,
                                                 sturgeon at two stages in its life cycle:               October 2012 and the Xiluodo Dam in
                                                                                                                                                               1495).
                                                 Commencement of spawning migration                      May 2013, discharge in the lower Jinsha                  The Jinsha River dams trap up to 82
                                                 and egg survival. Spawning migration of                 has declined more than 50 percent,                    percent of the sediment during the
                                                 the Yangtze sturgeon will not start until               suggesting that current flow rate is                  winter months, resulting in ‘‘clean’’ (i.e.,
                                                 the water temperatures reach 18 degrees                 likely to be lower than the flow rate                 sediment-free) water flowing
                                                 Celsius (°C) (64.4 degrees Fahrenheit                   between 1950 and 2000 (Cheng et al                    downstream. This ‘‘clean’’ water lacks
                                                 (°F)) (Cheng et al. 2015, p. 578).                      2015, p. 577). The Jinsha River feeds                 nutrients and may decrease the food
                                                 Historically, before the construction of                into the upper Yangtze River. This                    supply of the Yangtze sturgeon over the
                                                 the Xiangjiaba and other dams on the                    means that reduction in flow rate on the              winter months (Cheng et al. 2015, p.
                                                 lower Jinsha, water temperature reached                 Jinsha will also reduce the flow rate on              578). During the subsequent spring
                                                 18 °C (64.4 °F) around April. However,                  the upper Yangtze River. Given that the               flood, the release of concentrated
                                                 the construction of the dams stratified                 Yangtze sturgeon is closely related to                sediment by dams likely results in
                                                 the water table. As most dams on the                    the Chinese sturgeon, a reduction of                  sediments filling in all the interstitial
                                                 Yangtze are designed to release cold                    flow rate by over 50 percent could have               spaces in spawning habitat, thereby
                                                 water located at the bottom of the dams,                a significant negative impact on the                  reducing available spawning habitat for
                                                 the spawning season for the Yangtze                     reproductive success rate of the Yangtze              that season.
                                                 sturgeon could be delayed by more than                  sturgeon given its already tenuous                       Despite the spring release of
                                                 a month (Deng et al. 2006 and Wang et                   biological status.                                    concentrated sediments, sediment load
                                                 al. 2009, as cited in Cheng et al. 2015,                Sedimentation Concentration                           is expected to decline over time. At
                                                 p. 578). This delay shortens the                                                                              Yichang, sediment load per year has
                                                 maturing season for juveniles and is          In addition to affecting spawning of                            decreased from 530 mega tons (Mt) per
                                                 likely to reduce the species’ survival     Yangtze sturgeon, dams affect the                                  year in the 1950s–1960s, to 60 Mt per
                                                 rate. Additionally, if the water remains   condition of the species’ spawning                                 year after 2003. Additionally,
                                                 too cold for too long, sturgeon eggs will  ground through changes in the water                                suspended sediment at Yichang below
                                                 not mature, resulting in total loss of     velocity and sedimentation load.                                   Three Gorges Dam has decreased in size
                                                 reproduction for that season (Kynard       Because reproductive success of                                    from 8–10 micrometers in 1987–2002 to
                                                 2016, pers. comm.).                        sturgeon is tied to the amount of                                  3 micrometers after 2003 (Yang et al.
                                                                                            suitable habitat, a reduction in habitat                           2011, pp. 16–17). Reduction in sediment
                                                 Water Discharge and Velocity               area can reduce the reproductive                                   size can lead to increased
                                                    By altering discharge rates, dams       success of the species (Ban et al. 2011,                           embeddedness of available interstitial
                                                 affect the Yangtze sturgeon’s              p. 96; Bemis and Kynard 1997, p. 169).                             space. At the reaches below Gezhouba
                                                 reproductive success by affecting the      Specifically, flow rates affect the                                Dam, sedimentation has reduced
                                                 timing of spawning migration. The          Yangtze sturgeon by affecting the                                  available interstitial space by up to 50
                                                 species’ spawning migration begins         sedimentation concentration in the                                 to 70 percent (Du et al. 2011, p. 262).
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                                                 when flow rate increases during the        water and on the riverbed. As noted                                This prevents the adherence of eggs to
                                                 spring flood (Zhuang et al. 1997, p. 261). before, Yangtze sturgeon lay their eggs                            the river bottom and reduces the quality
                                                 At Yichang, the most downstream            on the interstitial spaces between rocks                           of remaining spawning habitats.
                                                 portion of the Yangtze sturgeon’s          and boulders. The makeup of the
                                                 current range, the mean discharge rate     riverbed needs to contain the right                                Summary of Effects of Dams on the
                                                 from 1983 to 2004 (before the              concentration of small pebbles and                                 Yangtze Sturgeon
                                                 construction of Three Gorges Dam) was      larger boulders to provide sufficient                                Dam construction in the middle
                                                 between 10,000 m3/s and 17,000 m3/s.       space for adherence and aeration of the                            Yangtze and lower Jinsha has restricted


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                                                 61236             Federal Register / Vol. 82, No. 247 / Wednesday, December 27, 2017 / Proposed Rules

                                                 the species’ range to the reaches of the                from synthetic fibers further contributed             impacts of industrial pollution on
                                                 Yangtze between Yibin and Yichang                       to a higher catch rate of sturgeons (Chen             Yangtze sturgeon specifically, there
                                                 (Wu et al. 2014, p. 5). These projects                  D. et al. 2009, p. 346).                              have been studies on Chinese sturgeon
                                                 prevented the migration of the species                    Despite attempts to help conserve the               and other sturgeon species. Industrial
                                                 upstream and downstream of the dams.                    species by restocking, restocked                      pollutants such as triphenyltin (TPT)
                                                 Although there is currently access                      juveniles experience very low survival                affect reproductive success of the
                                                 between the species’ remaining                          rates (Wu et al. 2014, p. 4). From 2010               Chinese sturgeon. TPT, used in paint on
                                                 spawning and feeding grounds, the                       to 2013, restocking operations released               ship hulls and in fishnets in China, can
                                                 condition of remaining habitat is likely                7,030 juveniles into the upper Yangtze                be absorbed into the eggs of Chinese
                                                 to be negatively affected by changes to                 River main stem. Subsequent bycatch                   sturgeon, resulting in increased
                                                 the river flow and sedimentation rate.                  between 2010 and 2013 recorded a total                deformities including abnormal
                                                 The formation of the Three Gorges                       of 112 sturgeons caught, indicating a                 development and skeletal and
                                                 reservoir has transformed the 600-km                    very low survival rate of stocked                     morphological deformities in embryos
                                                 reach above the dam into a lentic                       juveniles (Wu et al. 2014, p. 3). These               (Hu et al. 2009, pp. 9339–9340).
                                                 system, resulting in unsuitable habitat                 results suggest very low survivability of                A study on TPT exposure to 2- to 3-
                                                 for the species (Kynard 2016, pers.                     restocked sturgeon, and the subsequent                day-old Chinese sturgeon larvae found
                                                 comm.; Cheng et al. 2015, pp. 570, 576).                impacts from bycatch are too high for                 that 6.3 percent showed skeletal/
                                                 As a result, Yangtze sturgeon rarely use                the species to persist (Wu 2016, pers.                morphological deformities and 1.2
                                                 habitat downstream from Chongqing                       comm.; Wu et al. 2014, p. 4).                         percent had no eyes or only one eye. At
                                                 (Wu et al. 2014, p. 5).                                                                                       the same time, larvae from spawning
                                                                                                         Riverbed Modification
                                                    Upstream from the species’ current                                                                         hatches of captured adults showed
                                                 range, the construction of the Xiluodu                     The Yangtze sturgeon requires river                skeletal/morphological deformities of
                                                 and Xiangjiaba Dam is likely to                         substrate to contain suitable                         3.9 percent and 1.7 percent that had
                                                 negatively affect the reproductive                      concentration to reproduce successfully               only one eye or no eyes. Given the rate
                                                 success of the Yangtze sturgeon.                        (Du et al. 2011, p. 257). Alteration to the           of deformities found in this study, the
                                                 Through the release of cold water                       riverbed has reduced the reproductive                 capability for the studied Chinese
                                                 during the spring flood, the dam can                    success of this species. To improve                   sturgeon to reproduce was reduced by
                                                 delay the spawning migration of the                     navigation on the lower Jinsha and                    58.4 to 75.9 percent (Hu et al. 2009, p.
                                                 sturgeon, which will either shorten the                 upper Yangtze River, multiple projects,               9342). Because the Yangtze and Chinese
                                                 maturation time for juveniles or prevent                including sand and gravel extraction                  sturgeon are closely related species, the
                                                 the successful maturation of eggs                       operations, were implemented on the                   presence of TPT in the upper Yangtze
                                                 altogether (Kynard 2016, pers. comm.;                   reaches between Shuifu and Yibin and                  River is likely reducing the reproductive
                                                 Cheng et al. 2015, p. 578). Alteration to               Yibin and Chongqing (Zhang et al. 2011,               success of the Yangtze sturgeon by a
                                                 sediment concentration in both the                      p. 184). Between 2005 and 2009, $44                   similar rate.
                                                 short term and long term reduces the                    million (converted to U.S. dollars) were                 In addition to TPT, the presence of
                                                 quality of remaining habitat (Du et al.                 invested to improve the navigation                    endocrine disruptors compound (EDC)
                                                 2011, p. 262). Given the lack of observed               between Yibin and Chongqing. These                    affects Chinese sturgeon by inducing
                                                 natural reproduction of the species in                  investments have led to the                           declining sperm activity, intersex testis-
                                                 the upper Yangtze, dams significantly                   modification of 22 riffles (a shallow                 ova, and a decline in male to female
                                                 affect the viability of the species.                    section of a stream or river with rapid               ratio in the population (An and Hu
                                                                                                         current and a surface broken by gravel,               2006, p. 381). A study on EDC found
                                                 Overfishing (historical) and Bycatch                    rubble or boulders) on the upper                      that the concentration of EDC in the
                                                 (current)                                               Yangtze and the deepening of the                      Yangtze River (1.55 to 6.85 micrograms
                                                   Historically, the Yangtze sturgeon was                channel from 1.8 m (5.9 ft) to 2.7 m (8.8             per liter) is very high and could have a
                                                 commercially harvested on the Yangtze                   ft) (Zhang et al. 2011, p. 184).                      detrimental impact on sturgeon in the
                                                 River. In the 1960s, harvest of Yangtze                 Additionally, up to 10, 6, and 3 river                river. This result suggests that industrial
                                                 sturgeon accounted for 10 percent of                    dredge ships operate in the Yangtze                   discharge of EDC is occurring in the
                                                 total harvest. In the 1970s, 5,000                      River, the Jinsha River, and the Min                  Yangtze.
                                                 kilograms (5.5 tons) of Yangtze                         River, respectively. The operations of                   As a result of rapid industrialization
                                                 sturgeons were caught in the spring                     these ships alters the bottom topography              on the Yangtze River, higher
                                                 season at Yibin (Zhuang et al. 1997, p.                 of the riverbeds, which results in the                concentration of heavy metals are found
                                                 262). Since then however, the                           loss of benthic habitat and spawning                  in the Yangtze River (Yujun et al. 2008,
                                                 population of Yangtze sturgeon has                      ground for many fish species, including               p. 338). High concentration of heavy
                                                 declined significantly (Zhang et al.                    the Yangtze sturgeon (Fan et al. 2006, p.             metals leads to greater accumulation in
                                                 2013, p. 409). This decline is due to                   37). These projects are occurring on or               all aquatic organisms (Yujun et al. 2008,
                                                 multiple reasons. Fishermen use fine                    near current Yangtze sturgeon spawning                p. 339). The toxicity effect of heavy
                                                 mesh nets that prevent smaller fish,                    and feeding grounds from Yibin to                     metal accumulation is especially
                                                 weighing as little as 50 grams (1.7                     Hejiang. Thus these operations will                   pronounced in zoobenthic predators,
                                                 ounces), from being able to escape. The                 continue to reduce the quality and                    like the Yangtze sturgeon, because they
                                                 number of fishing boats increased from                  quantity of remaining habitat (Zhang et               occupy a higher position in the food
                                                 500 in 1950s to 2,000 by 1985. More                     al. 2011, p. 184).                                    chain. The result is that by consuming
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                                                 than 140,000 fishermen currently                                                                              smaller prey species that have absorbed
                                                 depend on the river for a living.                       Industrial Pollution                                  heavy metal, zoobenthic predator build
                                                 Furthermore, the fishing season                           As a benthic predator, the Yangtze                  up heavy metal accumulation inside
                                                 overlapped with the main spawning                       sturgeon is exposed to higher                         their bodies (Yujun et al. 2008, p. 346).
                                                 season of the Yangtze sturgeon (Yi 2016,                concentrations of industrial pollution                Given that heavy metal concentration is
                                                 p. 1; Fan et al. 2006, p. 37; Zhuang et                 than many other fish species (Yujun et                highest in benthic animals, especially
                                                 al. 1997, p. 262). The replacement of                   al. 2008, pp. 341–342). While we are not              zoobenthic predators like the sturgeon,
                                                 bamboo and reed gear with gear made                     aware of any studies that analyze the                 the effect of heavy metals on the


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                                                                   Federal Register / Vol. 82, No. 247 / Wednesday, December 27, 2017 / Proposed Rules                                           61237

                                                 sturgeon could be more pronounced          Siberian sturgeon with Russian sturgeon                            initiatives include increasing legal
                                                 than other aquatic species (Yujun et al.   (A. gueldenstaedtii), Sterlet sturgeon (A.                         protection for the Yangtze sturgeon,
                                                 2008, p. 341; An and Hu 2006, p. 381).     ruthenus), and Amur sturgeon (A.                                   creating and designating part of the
                                                 Despite the known impacts on captured      schrenckii) (Li R. et al. 2009, p. 636).                           species’ range as a protected area, and
                                                 Chinese sturgeon, we currently do not      Crossbreeding of sturgeon species in                               repopulating the species in the wild
                                                 have evidence of population-level          China alters the wild population                                   through restocking (Zhang H. et al.
                                                 impacts of EDC or heavy metal on the       makeup. A study on the lower Yangtze                               2011, p. 181; Fan et al. 2006, p. 35; Wei
                                                 wild Yangtze sturgeon population. That     River in 2006 found that of the 221                                et al. 2004, p. 322).
                                                 said, even though we have no evidence      young sturgeons captured, 153 were
                                                                                                                                                               Legal Protections
                                                 of morphological deformities in wild       hybrids, which accounted for 69.9
                                                 sturgeon, it is likely that industrial     percent of total sturgeons caught (Li R.                              In response to the decline of the
                                                 pollution does have an effect on the       et al. 2009, p. 636). This information                             Yangtze sturgeon, in 1989, China’s State
                                                 reproductive success of wild sturgeon.     indicates that farmed hybrids are                                  Council added the Yangtze sturgeon to
                                                                                            escaping into the river system. Although                           the National Red Data Book for
                                                 Hybridization With Displaced Native                                                                           Threatened Chinese Fish as a Class I
                                                                                            this study was conducted in the lower
                                                 and Nonnative Sturgeon                                                                                        Protected Animal (Wu et al. 2014, p. 1;
                                                                                            Yangtze River, because sturgeon
                                                    Despite decline in wild fishery yields, aquaculture occurs across the Yangtze                              Zhang H. et al. 2011, p. 181; Dudgeon
                                                 the Yangtze basin remains one of the       River system, it is likely that                                    2010, p. 128; Wei et al. 2004, p. 322;
                                                 major centers of China’s aquaculture       hybridization is occurring in the upper                            Zhuang et al. 1997, p. 258). Animals
                                                 industry. Fishery yields from the basin    Yangtze River as well.                                             listed as a Class I species are protected
                                                 accounts for 65 percent of total              The uncontrolled hybridization of                               from certain activities, including
                                                 freshwater fisheries production in China native and nonnative species on the                                  hunting, capturing, or killing, for both
                                                 (Shen et al. 2014, p. 1547; Chen D. et     Yangtze alters the population dynamics                             commercial and personal uses.
                                                 al. 2009, p. 338). In the past 30 years,   between hybrids and native stocks.                                 Scientific research, domestication,
                                                 sturgeon aquaculture in China has risen Hybridization may reduce the fitness of                               breeding, and exhibition are exempted
                                                 significantly. Although commercial         the overall population or replace a                                (Wei et al. 2004, p. 322). Transportation
                                                 aquaculturing of sturgeon only started     population of native fish with hybrids                             of Class I-listed species requires
                                                 in the 1990s, by 2006, production had      (Shen et al. 2014, p. 1549; Li R. et al.                           approval from the Department of
                                                 reached 17,424 tons, which accounts for 2009, p. 636). Hybridization may also                                 Wildlife Administration. Import or
                                                 80 percent of the world total production result in hybrids with better fitness than                           export of Class I aquatic species is
                                                 (Shen et al. 2014, p. 1548). The growth    wild stock that outcompete wild native                             regulated by the Fisheries Bureau of the
                                                 of the aquaculture industry in China       stock of Yangtze sturgeon for habitat                              Minister of Agriculture (Wei et al. 2004,
                                                 saw aquaculture farms constructed          and resources. When native fish are                                p. 323).
                                                 across all branches of the Yangtze River unavailable, farmers tend to import                                     In addition to its listing under
                                                 (Li R. et al. 2009, p. 636). Sturgeon      nonnative fish that have better                                    national law, the species has also been
                                                 species that are commonly used in the      characteristics, such as higher growth                             included in Appendix II of the
                                                 aquacultural industry include A.           rate and better adaptability. These non-                           Convention on International Trade in
                                                 schrenckii, Huso dauricus, and other       native sturgeons are bred with available                           Endangered Species of Wild Fauna and
                                                 Amur River sturgeon hybrids (Li R. et al. native sturgeon to produce hybrids.                                 Flora (CITES) since 1998 (Ludwig 2008,
                                                 2009, p. 636). However, none of these      These hybrids oftentimes escape or are                             p. 5; CITES 1997, pp. 152–153). The
                                                 commonly cultured species are native to accidentally introduced into the wild                                 CITES trade database has recorded no
                                                 the Yangtze River. Additionally, there is and then compete with the Yangtze                                   international trade of this species going
                                                 a lack of regulation and enforcement of    sturgeon for resources (Xiong et al.                               as far back as 1975 (the oldest date on
                                                 regulation to properly manage              2015, pp. 657–658). Although                                       CITES database) (CITES 2017).
                                                 hybridization of sturgeon species. There hybridization is likely to be occurring                              International trade in CITES species is
                                                 is also the problem of aquaculture         all along the Yangtze River, we                                    regulated via a permit system. Under
                                                 sturgeon escaping from sturgeon farms      currently do not have information on                               Article IV of CITES, export of an
                                                 into the wider river system (Li R. et al.  the rates of hybridization of sturgeon in                          Appendix-II specimen requires the prior
                                                 2009, p. 636). The result is a comingling the upper Yangtze or how significant                                grant and presentation of an export
                                                 of native, exotic, and hybrid sturgeon     the effects are on the Yangtze sturgeon.                           permit. Export permits for Appendix-II
                                                 species which could have a negative        That said, given that hybridized                                   specimens are only granted if the
                                                 impact on the Yangtze sturgeon (Shen et sturgeons make up 69.9 percent of                                     Management Authority of the State of
                                                 al. 2014, p. 1549; Li R. et al. 2009, p.   sturgeons found in the studied area, it                            export is satisfied that the specimens
                                                 636).                                      is likely that sturgeon hybrids are                                were lawfully obtained and if the
                                                    There is currently no native-strain     competing, and will likely continue to                             Scientific Authority of the State of
                                                 farm (farm that raises native species) for compete, with native stocks for habitat                            export has advised that the trade is not
                                                 sturgeons in China. Because no farms in and resources throughout the Yangtze                                  detrimental to the survival of the
                                                 China focus on raising native stock in     River system.                                                      species in the wild. For any living
                                                 large enough number, this system                                                                              specimen, the Management Authority of
                                                 creates shortages of parental stock of     Management Efforts                                                 the State of export must also be satisfied
                                                 native sturgeons. In response to this         As a result of overfishing and the                              that the specimen will be so prepared
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                                                 shortage, farmers crossbreed wild-         construction of Gezhouba Dam in 1981,                              and shipped as to minimize the risk of
                                                 caught sturgeon with any sturgeon          the population of Yangtze sturgeon has                             injury, damage to health or cruel
                                                 species available including nonnative      declined (Du et al. 2014, p. 1; Wu et al.                          treatment. Re-export of an Appendix-II
                                                 species (Xiong et al. 2015, p. 658; Li R.  2014, p. 1; Zhang H. et al. 2011, p. 181).                         specimen requires the prior grant and
                                                 et al. 2009, p. 636). For example, in      In response to the decline of the species,                         presentation of a re-export certificate,
                                                 2006, there was a shortage of Siberian     national and local officials have                                  which is only granted if the
                                                 sturgeon in China (Acipenser baerii).      embarked on a number of initiatives to                             Management Authority of the State of
                                                 Farmers then started crossbreeding         help conserve the species. These                                   re-export is satisfied that the specimen


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                                                 61238             Federal Register / Vol. 82, No. 247 / Wednesday, December 27, 2017 / Proposed Rules

                                                 was imported into that State in                         Protected Areas                                       boundary of the National Reserve of
                                                 accordance with CITES and, for any                         To offset the effects of habitat loss due          Hejiang-Leibo Reaches. The CTGC
                                                 living specimen, that the specimen will                 to dams, China’s State Department                     successfully petitioned the State
                                                 be so prepared and shipped as to                        established in 2000 the National Reserve              Council to redraw the boundaries of the
                                                 minimize the risk of injury, damage to                  of Hejiang-Leibo Reaches of the Yangtze               reserve to exclude the section of the
                                                 health or cruel treatment. Certain                      River for Rare and Endangered Fishes                  river where the Xiangjiaba Dam is
                                                 exemptions and other special provisions                 (Zhang H. et al. 2011, p. 181; Fan et al.             located (Dudgeon 2011, p. 1500;
                                                 relating to trade in CITES specimens are                2006, p. 35). The reserve is located on               Dudgeon 2010, p. 129). The reserve,
                                                 also provided in Article VII of CITES. In               the upper Yangtze River on the reaches                now renamed the National Natural
                                                 the United States, CITES is                             between Xiangjiaba Dam and the city of                Reserve Area of Rare and Special Fishes
                                                 implemented through the Act and                         Chongqing. This reserve is intended to                of the Upper Yangtze River,
                                                 regulations at 50 CFR part 23.                          protect three imperiled fish species, the             encompasses the reaches below the
                                                    Additionally, since 2003, a fishing                                                                        Xiangjiaba Dam from Yibin to
                                                                                                         Yangtze sturgeon, the Chinese
                                                 ban on all fish species has been                                                                              Chongqing as well the tributaries that
                                                                                                         paddlefish (Psephurus gladius), and the
                                                 implemented in the upper Yangtze                                                                              feed into the Yangtze (Zhang H. et al.
                                                                                                         Chinese high-fin banded shark
                                                 River from February 1 to April 30.                                                                            2011, p. 182; Fan et al. 2006, p. 35). The
                                                                                                         (Myxocyprinus asiaticus), as well as 37
                                                 Starting in 2017, the fishing ban was                                                                         redrawing of the area of the reserve to
                                                                                                         other endemic fish species (Fan et al.
                                                 extended from March to June (Du 2017,                                                                         accommodate the construction of
                                                                                                         2006, p. 35). In 2005, the reserve was
                                                 pers. comm.). One of the side effects of                                                                      Xiangjiaba Dam lends further evidence
                                                                                                         expanded to mitigate the impact from
                                                 this ban is a reduction in the bycatch of                                                                     that local governments are prioritizing
                                                                                                         current and future hydroelectric projects
                                                 Yangtze sturgeon since the time period                                                                        growth over environmental impacts.
                                                 of the ban coincides with the spawning                  (Zhang H. et al. 2011, pp. 181–182).
                                                                                                                                                               The construction of the Xiangjiaba Dam
                                                 season of the Yangtze sturgeon (Chen D.                 While the reserve plays an important
                                                                                                                                                               led to the impoundment of the reach
                                                 et al. 2012, p. 532; Chen D. et al. 2009,               role in protecting wildlife within its
                                                                                                                                                               upriver, which will affect the flow and
                                                 p. 348).                                                borders, expansion of the hydroelectric
                                                                                                                                                               sedimentation rate downstream (Cheng
                                                    Despite the implementation of legal                  project in the lower Jinsha River and
                                                                                                                                                               et al. 2015, p. 577; Dudgeon 2011, p.
                                                 protection for the species, there are                   upper Yangtze outside the protected
                                                                                                                                                               1500). Given the lack of natural
                                                 several shortcomings with the current                   area is likely to undermine the                       reproduction of the Yangtze sturgeon
                                                 regulatory mechanisms for the species.                  effectiveness of the reserve. In order to             and future impacts from the dam, it is
                                                 China currently does not have a                         facilitate economic growth, China has                 unlikely that the current boundary of
                                                 specialized, dedicated agency to manage                 decentralized authority for                           the reserve will be sufficient to maintain
                                                 fisheries resources across the country.                 infrastructure development from the                   a wild breeding population of this
                                                 Riverine resource management is                         state to local municipalities. This                   species (Kynard 2016, pers. comm.;
                                                 maintained at local levels which are                    decentralized model has resulted in                   Dudgeon 2011, p. 1500).
                                                 often located in major population                       provincial governments prioritizing
                                                 center, far away from the fishery                       economic growth over environmental                    Restocking
                                                 resource (Chen D. et al. 2012, p. 541).                 impacts (Dudgeon 2011, p. 1496).                         As a result of the decline of the
                                                 In the case of Yangtze sturgeon, these                     Since 2003, hydroelectric projects in              species, controlled reproduction and
                                                 different jurisdictions have variations in              China are subjected to environmental                  release of juvenile Yangtze sturgeon has
                                                 regulation and conservation goals for                   assessments and approval from the                     occurred every year since 2007 (Zhang
                                                 the Yangtze River ecosystem, which                      Ministry of Environmental Protection                  H. et al. 2011, p. 181). Between 2007
                                                 limits coordination of species-                         (Ministry) (Dudgeon 2011, p. 1496).                   and 2012, more than 10,000 Yangtze
                                                 conservation efforts and the overall                    However, this approval is routinely                   sturgeon juveniles were released into
                                                 effectiveness in managing species                       ignored even by nationally owned                      the upper Yangtze on reaches
                                                 conservation across the Yangtze River                   corporations. For example, in 2004,                   downstream from Xiangjiaba Dam (Wu
                                                 basin (Chen D. et al. 2012, p. 541).                    China Three Gorges Corporation (CTGC)                 et al. 2014, p. 1). In 2014, restocking was
                                                    In addition to a lack of a specialized               began construction of the Xiluodu Dam                 started on the reaches below Gezhouba
                                                 body or other effective basin-wide                      in the Lower Jinsha without obtaining                 Dam (Du 2017, pers. comm.). While this
                                                 conservation efforts, lack of funding is                permission from the Ministry (Dudgeon                 number pales in comparison to the six
                                                 major problem for local jurisdictions.                  2011, pp. 1496–1497). In response, the                million Chinese sturgeon that have been
                                                 Enforcement officers often lack basic                   Ministry suspended work on the dam in                 released since 1983, the restocking of
                                                 equipment, such as boats, to carry out                  2005. However, despite initial                        the Yangtze sturgeon represent an
                                                 fishing regulations within the fishery                  reservation about the lack of an                      attempt by local and state officials to try
                                                 (Chen D. et al. 2012, p. 541).                          environmental impact assessment, the                  to maintain the species in the wild
                                                 Additionally, while commercial                          Ministry quickly compiled reports and                 (Chen D. et al. 2009, p. 349).
                                                 harvesting of the species is prohibited,                allowed the dam construction to                          Despite the efforts to restock the
                                                 bycatch is still occurring and may still                proceed (Dudgeon 2011, p. 1499).                      Yangtze sturgeon in the wild, current
                                                 be too high to sustain a wild breeding                  Additionally, in 2009 the Ministry gave               restocking efforts are unsuccessful (Wu
                                                 population (Zhang H. et al. 2011, p.                    the authority to build two additional                 et al. 2014, p. 4). No juveniles were
                                                 184). The new fishing ban implemented                   dams on the Jinsha segment to other                   caught 95 days after release, indicating
                                                 in 2017 has the potential to reduce                     dam construction companies after a                    that released sturgeon experienced a
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                                                 bycatch (Du 2017, pers. comm.).                         brief suspension (Dudgeon 2010, p.                    very high mortality rate (Wu et al. 2014,
                                                 However, the positive effects from a                    129). Overall, these temporary                        p. 4). There are multiple possible
                                                 fishing ban on the Yangtze may be                       suspensions of construction have done                 reasons for the limited success of
                                                 limited, given the importance of the                    little to slow down the pace of dam                   current restocking efforts, including
                                                 Yangtze to the economic well-being of                   development. In 2011, CTGC began                      poor breeding and rearing techniques
                                                 riverside communities as entire                         constructing the Xiangjiaba Dam on the                that result in progeny with low survival
                                                 stretches of the river cannot be closed                 Lower Jinsha. The location of this dam                rates in the wild, high bycatch rate, and
                                                 off to fishing (Fan et al. 2006, p. 38).                would have occurred within the 500-km                 loss or deterioration of remaining


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                                                                   Federal Register / Vol. 82, No. 247 / Wednesday, December 27, 2017 / Proposed Rules                                           61239

                                                 habitats (Cheng et al. 2015, pp. 579–580;               of chemical plants suggest that risk of               2000s (Wu et al. 2014, p. 1).
                                                 Du et al. 2014, p. 2; Shen et al. 2014,                 industrial spills is quite high. Therefore,           Additionally, restocked juvenile
                                                 p. 1549; Zhang H. et al. 2011, p. 184).                 it is likely that stochastic processes have           sturgeon experience very high mortality
                                                 Thus, despite attempts to conserve the                  negative impacts on the species in                    rates due to a high bycatch rate and an
                                                 species in the wild through restocking,                 combination with other factors such as                inability to survive in wild conditions
                                                 with all the other forces acting on the                 habitat modification and loss and                     (Du et al. 2014, p. 1; Wu et al. 2014, p.
                                                 Yangtze sturgeon it is unlikely that                    bycatch.                                              4).
                                                 current restocking efforts are adequate                                                                          Industrial pollution and hybridization
                                                                                                         Determination                                         with displaced native and nonnative
                                                 to improve the species’ condition in the
                                                 wild.                                                      Section 4 of the Act (16 U.S.C. 1533),             sturgeon species are also acting on the
                                                                                                         and its implementing regulations at 50                species (Factor E). Although we do not
                                                 Stochastic (Random) Events and                          CFR part 424, set forth the procedures                have information on the impact of
                                                 Processes                                               for adding species to the Federal Lists               industrial pollution on the species in
                                                    Species endemic to small regions, or                 of Endangered and Threatened Wildlife                 the wild, studies in a laboratory
                                                 known from few, widely dispersed                        and Plants. Under section 4(a)(1) of the              environment found that pollutants such
                                                 locations, are inherently more                          Act, we may list a species based on: (A)              as TPT and EDC can reduce the
                                                 vulnerable to extinction than                           The present or threatened destruction,                reproductive success rate of adult
                                                 widespread species because of the                       modification, or curtailment of its                   sturgeons (Hu et al. 2009, p. 9342; An
                                                 higher risks from localized stochastic                  habitat or range; (B) overutilization for             and Hu 2006, pp. 379–380).
                                                 (random) events and processes, such as                  commercial, recreational, scientific, or              Additionally, there are high
                                                 industrial spills and drought. These                    educational purposes; (C) disease or                  concentrations of TPT and EDC in the
                                                 problems can be further magnified when                  predation; (D) the inadequacy of                      Yangtze River. While we do not have
                                                 populations are very small, due to                      existing regulatory mechanisms; or (E)                data on the hybridization of Yangtze
                                                 genetic bottlenecks (reduced genetic                    other natural or manmade factors                      sturgeon with other species, surveys
                                                 diversity resulting from fewer                          affecting its continued existence. Listing            conducted in the lower Yangtze River
                                                 individuals contributing to the species’                actions may be warranted based on any                 found that 69.9 percent of sturgeon
                                                 overall gene pool) and random                           of the above threat factors, singly or in             species caught were hybrids (Li R. et al.
                                                 demographic fluctuations (Lande 1988,                   combination.                                          2009, p. 636). These results suggest that
                                                 p. 1455–1458; Pimm et al. 1988, p. 757).                   We have carefully assessed the best                industrial pollution and hybridization,
                                                 Species with few populations, limited                   scientific and commercial information                 in tandem with other factors, are
                                                 geographic area, and a small number of                  available on the Yangtze sturgeon.                    affecting the species.
                                                 individuals face an increased likelihood                While we do not know the exact                           Therefore, for the following reasons
                                                 of stochastic extinction due to changes                 population size of the Yangtze sturgeon,              we conclude that this species has been
                                                 in demography, the environment,                         the species was historically abundant                 and continues to be significantly
                                                 genetics, or other factors, in a process                enough to be commercially viable up to                reduced to the extent that the viability
                                                 described as an extinction vortex (a                    the 1970s, after which it experienced a               of the Yangtze sturgeon is significantly
                                                 mutual reinforcement that occurs among                  significant decline (Kynard et al. 2003,              compromised:
                                                 biotic and abiotic processes that drives                p. 27). Loss of individuals due to                       (1) The species is limited to a single
                                                 population size downward to                             overharvesting by fishermen on the                    geographic population in the upper
                                                 extinction) (Gilpin and Soule´ 1986, pp.                Yangtze (Factor B) is the main factor                 Yangtze main stem and its tributaries.
                                                 24–25). The negative impacts associated                 that contributed to the historical decline            There is also some evidence of a small
                                                 with small population size and                          of the species. Subsequent construction               remnant population in the middle
                                                 vulnerability to random demographic                     of dams on the Yangtze prevented the                  Yangtze.
                                                 fluctuations or natural catastrophes can                migration in the middle Yangtze and                      (2) Loss of habitat and connectivity
                                                 be further magnified by synergistic                     lower Jinsha, which prevented recovery                between the spawning and feeding
                                                 interactions with other threats.                        of the species in these areas (Miao et al.            reaches is having a significant adverse
                                                    The Yangtze sturgeon is known from                   2015, p. 2351; Wu et al. 2014, p. 2;                  effect on the species, which appears to
                                                 a single geographic population in the                   Dudgeon 2010, p. 128; Fang et al. 2006,               have low to no reproduction.
                                                 upper Yangtze River and its tributaries                 p. 375; Zhuang et al. 1997, p. 261).                     (3) The cumulative effects of habitat
                                                 (Zhang et al. 2011, pp 181–182; Zhuang                  Additionally, dams affect the quality of              modification and loss due to dams and
                                                 et al. 1997, p. 259). As a result, the                  the species’ habitat through changes in               riverbed projects, bycatch, industrial
                                                 species is highly vulnerable to                         discharge, temperature, and                           pollution, and hybridization are
                                                 stochastic processes and is highly likely               sedimentation rate (Zhang G. et al. 2012,             adversely affecting the species.
                                                 negatively affected by these processes.                 p. 445; Du et al. 2011, p. 262; Chen Z.                  (4) Current restocking and
                                                 In March 2000, for example, the                         et al. 2001, p. 90). In addition to dams,             management efforts are inadequate to
                                                 Jinguang Chemical Plant, located on the                 the species’ habitat is also adversely                maintain the species’ presence in the
                                                 Dadu River (a tributary of the Yangtze                  affected by riverbed modification to                  wild.
                                                 River), was found to be releasing yellow                accommodate increasing boat traffic.                     (5) Stochastic events, such as
                                                 phosphorous into the Yangtze. This                      The combined effects of dams and                      industrial spills or drought, can reduce
                                                 substance is highly toxic to aquatic                    riverbed modification on the Yangtze                  the survival rate of the species
                                                 organisms including the Yangtze                         include the loss and reduction in                        In section 3(6), the Act defines an
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                                                 sturgeon (Chen D. et al. 2009, p. 343).                 quality of remaining habitat (Factor A).              ‘‘endangered species’’ as any species
                                                 Another spill in 2006 on the Yuexi                         Despite conservation efforts                       that is ‘‘in danger of extinction
                                                 River, which also feeds into the                        undertaken by local and national                      throughout all or a significant portion of
                                                 Yangtze, saw mercury being released                     authorities such as fishing bans and                  its range’’ and in section 3(20), a
                                                 into the river (Worldwatch Insitute                     restocking, current efforts do not appear             ‘‘threatened species’’ as any species that
                                                 2006, npn). These and other incidents                   to be successful in conserving the                    is ‘‘likely to become an endangered
                                                 combined with the fact that the Yangtze                 species. No natural reproduction has                  species within the foreseeable future
                                                 River system is home to a large number                  been documented in the wild since the                 throughout all or a significant portion of


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                                                 61240             Federal Register / Vol. 82, No. 247 / Wednesday, December 27, 2017 / Proposed Rules

                                                 its range.’’ We find that the Yangtze                   become so would not result in a                       assistance for such programs, in the
                                                 sturgeon is presently in danger of                      different outcome.                                    form of personnel and the training of
                                                 extinction throughout its range based on                                                                      personnel.
                                                                                                         Available Conservation Measures
                                                 the severity and immediacy of threats                                                                            Section 9 of the Act and our
                                                 currently adversely affecting the                          Conservation measures provided to                  implementing regulations at 50 CFR
                                                 species. The populations and                            species listed as endangered or                       17.21 set forth a series of general
                                                 distributions of the species have been                  threatened under the Act include                      prohibitions that apply to all
                                                 significantly reduced to the point where                recognition of conservation status,                   endangered wildlife. These
                                                 there is no current reproduction in the                 requirements for Federal protection, and              prohibitions, in part, make it illegal for
                                                 wild which is indicative of a very high                 prohibitions against certain practices.               any person subject to the jurisdiction of
                                                 risk of extinction, and the remaining                   Recognition through listing encourages                the United States to ‘‘take’’ (which
                                                 habitat and populations are threatened                  and results in public awareness and                   includes harass, harm, pursue, hunt,
                                                 by a variety of factors acting alone and                conservation actions by Federal and                   shoot, wound, kill, trap, capture, or
                                                 in combination to reduce the overall                    State governments in the United States,               collect; or to attempt any of these)
                                                 viability of the species.                               foreign governments, private agencies                 endangered wildlife within the United
                                                    Based on the factors described above                 and groups, and individuals.                          States or upon the high seas. It is also
                                                 and their impacts on the Yangtze                           Our regulations at 50 CFR part 402                 illegal to possess, sell, deliver, carry,
                                                 sturgeon, we find the following factors                 implement the interagency cooperation                 transport, or ship any such wildlife that
                                                 to be threats to this species (i.e., factors            provisions found under ESA Section 7.                 has been taken illegally. In addition, it
                                                 contributing to the risk of extinction of               Under section 7(a)(1) of the ESA, federal             is illegal for any person subject to the
                                                 this species): Loss and modification of                 agencies are to utilize, in consultation              jurisdiction of the United States to
                                                 habitat due to dams and riverbed                        with and with the assistance of the                   import; export; deliver, receive, carry,
                                                 expansion (Factor A), bycatch (Factor                   Service, their authorities in furtherance             transport, or ship in interstate or foreign
                                                 C), and cumulative effects (Factor E) of                of the purposes of the Act. Section                   commerce, by any means whatsoever
                                                 these and other threats including                       7(a)(2) of the Act, as amended, requires              and in the course of commercial
                                                 industrial pollution and hybridization.                 Federal agencies to ensure, in
                                                                                                                                                               activity; or sell or offer for sale in
                                                 Furthermore, current legal and                          consultation with the Service, that ‘‘any
                                                                                                                                                               interstate or foreign commerce any
                                                 management efforts over these practices                 action authorized, funded, or carried
                                                                                                                                                               listed species. Certain exceptions apply
                                                 are inadequate to conserve the species                  out’’ by such agency is not likely to
                                                                                                                                                               to employees of the Service, the
                                                 (Factor D).                                             jeopardize the continued existence of a
                                                                                                                                                               National Marine Fisheries Service, other
                                                    Therefore, on the basis of the best                  listed species or result in destruction or
                                                                                                                                                               Federal land management agencies, and
                                                 available scientific and commercial                     adverse modification of its critical
                                                                                                                                                               State conservation agencies.
                                                 information, we propose listing Yangtze                 habitat. An ‘‘action’’ that is subject to
                                                                                                                                                                  We may issue permits under section
                                                 sturgeon as endangered in accordance                    the consultation provisions of section
                                                                                                                                                               10 of the Act to carry out otherwise
                                                 with sections 3(6) and 4(a)(1) of the Act.              7(a)(2) has been defined in our
                                                                                                                                                               prohibited activities involving
                                                 We find that a threatened species status                implementing regulations as ‘‘all
                                                                                                                                                               endangered wildlife under certain
                                                 is not appropriate for this species                     activities or programs of any kind
                                                                                                                                                               circumstances. Regulations governing
                                                 because of its restricted range, limited                authorized, funded, or carried out, in
                                                                                                         whole or in part, by Federal agencies in              permits for endangered species are
                                                 distribution, and vulnerability to
                                                                                                         the United States or upon the high                    codified at 50 CFR 17.22. With regard to
                                                 extinction; and because the threats are
                                                                                                         seas.’’ 50 CFR 402.02. With respect to                endangered wildlife, a permit may be
                                                 ongoing throughout its range at a level
                                                                                                         this species, there are no ‘‘actions’’                issued for the following purposes: For
                                                 that places this species in danger of
                                                                                                         known to require consultation under                   scientific purposes, to enhance the
                                                 extinction now.
                                                    Under the Act and our implementing                   ESA Section 7(a)(2). Given the                        propagation or survival of the species,
                                                 regulations, a species may warrant                      regulatory definition of ‘‘action,’’ which            and for incidental take in connection
                                                 listing if it is endangered or threatened               clarifies that it applies to ‘‘activities or          with otherwise lawful activities. There
                                                 throughout all or a significant portion of              programs . . . in the United States or                are also certain statutory exemptions
                                                 its range. Because we have determined                   upon the high seas,’’ the species is                  from the prohibitions, which are found
                                                 that the Yangtze sturgeon is endangered                 unlikely to be the subject of section 7               in sections 9 and 10 of the Act.
                                                 throughout all of its range, we do not                  consultations, because the species                    Required Determination
                                                 need to conduct an analysis of whether                  conducts its entire life cycle in
                                                 there is any significant portion of its                 freshwater outside of the United States               Clarity of the Rule
                                                 range where the species is in danger of                 and is unlikely to be affected by U.S.                   We are required by Executive Orders
                                                 extinction or likely to become so in the                Federal actions. Additionally, because                12866 and 12988 and by the
                                                 foreseeable future. This is consistent                  the Yangtze sturgeon is not native to the             Presidential Memorandum of June 1,
                                                 with the Act because when we find that                  United States, no critical habitat is being           1998, to write all rules in plain
                                                 a species is currently in danger of                     proposed for designation with this rule.              language. This means that each rule we
                                                 extinction throughout all of its range                  50 CFR 424.12(g).                                     publish must:
                                                 (i.e., meets the definition of an                          Section 8(a) of the Act authorizes the                (1) Be logically organized;
                                                 ‘‘endangered species’’), the species is                 provision of limited financial assistance                (2) Use the active voice to address
                                                 experiencing high-magnitude threats                     for the development and management of                 readers directly;
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                                                 across its range or threats are so high in              programs that the Secretary of the                       (3) Use clear language rather than
                                                 particular areas that they severely affect              Interior determines to be necessary or                jargon;
                                                 the species across its range. Therefore,                useful for the conservation of                           (4) Be divided into short sections and
                                                 the species is in danger of extinction                  endangered or threatened species in                   sentences; and
                                                 throughout every portion of its range                   foreign countries. Sections 8(b) and 8(c)                (5) Use lists and tables wherever
                                                 and an analysis of whether there is any                 of the Act authorize the Secretary to                 possible.
                                                 significant portion of the range that may               encourage conservation programs for                      If you feel that we have not met these
                                                 be in danger of extinction or likely to                 foreign listed species, and to provide                requirements, send us comments by one


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                                                                     Federal Register / Vol. 82, No. 247 / Wednesday, December 27, 2017 / Proposed Rules                                                           61241

                                                 of the methods listed in ADDRESSES. To                       Federal Register on October 25, 1983                     Proposed Regulation Promulgation
                                                 better help us revise the rule, your                         (48 FR 49244).                                             Accordingly, we propose to amend
                                                 comments should be as specific as                                                                                     part 17, subchapter B of chapter I, title
                                                                                                              References Cited
                                                 possible. For example, you should tell                                                                                50 of the Code of Federal Regulations,
                                                 us the numbers of the sections or                              A complete list of references cited in                 as set forth below:
                                                 paragraphs that are unclearly written,                       this rulemaking is available on the
                                                 which sections or sentences are too                          internet at http://www.regulations.gov                   PART 17—ENDANGERED AND
                                                 long, the sections where you feel lists or                   and upon request from the Branch of                      THREATENED WILDLIFE AND PLANTS
                                                 tables would be useful, etc.                                 Foreign Species, Ecological Services
                                                                                                                                                                       ■ 1. The authority citation for part 17
                                                 National Environmental Policy Act (42                        (see FOR FURTHER INFORMATION CONTACT).
                                                                                                                                                                       continues to read as follows:
                                                 U.S.C. 4321 et seq.)                                         Authors                                                    Authority: 16 U.S.C. 1361–1407; 1531–
                                                                                                                                                                       1544; and 4201–4245, unless otherwise
                                                   We have determined that                                      The primary authors of this proposed                   noted.
                                                 environmental assessments and                                rule are the staff members of the Branch
                                                 environmental impact statements, as                                                                                   ■  2. In § 17.11(h), add an entry for
                                                                                                              of Foreign Species, Ecological Services,                 ‘‘Sturgeon, Yangtze’’ to the List of
                                                 defined under the authority of the                           Falls Church, VA.                                        Endangered and Threatened Wildlife in
                                                 National Environmental Policy Act (42
                                                                                                              List of Subjects in 50 CFR Part 17                       alphabetical order under FISHES to read
                                                 U.S.C. 4321 et seq.), need not be                                                                                     as set forth below:
                                                 prepared in connection with listing a                          Endangered and threatened species,
                                                 species as an endangered or threatened                       Exports, Imports, Reporting and                          § 17.11 Endangered and threatened
                                                 species under the Endangered Species                                                                                  wildlife.
                                                                                                              recordkeeping requirements,
                                                 Act. We published a notice outlining                         Transportation.                                          *       *    *        *      *
                                                 our reasons for this determination in the                                                                                 (h) * * *

                                                                                                                                                                                         Listing citations and applicable
                                                            Common name                                  Scientific name                        Where listed                   Status                   rules


                                                            *                        *                          *                      *                         *                       *                     *
                                                 FISHES

                                                          *                          *                       *                        *                       *                           *                    *
                                                 Sturgeon, Yangtze ......................     Acipenser dabryanus ................   Wherever found ........................     E       [Insert Federal Register cita-
                                                                                                                                                                                            tion when published as a final
                                                                                                                                                                                            rule].

                                                            *                        *                          *                      *                         *                       *                     *



                                                 *      *       *       *      *                                    Proposed rule; request for
                                                                                                              ACTION:                                                  Federal e-Rulemaking Portal. Go to
                                                   Dated: November 15, 2017.                                  comments.                                                www.regulations.gov/#!docketDetail;D=
                                                 James W. Kurth,
                                                                                                                                                                       NOAA-NMFS-2017-0106, click the
                                                                                                              SUMMARY:    NMFS proposes to implement                   ‘‘Comment Now!’’ icon, complete the
                                                 Deputy Director, U.S. Fish and Wildlife                      management measures described in
                                                 Service, Exercising the Authority of the
                                                                                                                                                                       required fields, and enter or attach your
                                                                                                              Amendment 47 to the Fishery                              comments.
                                                 Director, U.S. Fish and Wildlife Service.
                                                                                                              Management Plan for the Reef Fish                           • Mail: Submit written comments to
                                                 [FR Doc. 2017–27954 Filed 12–26–17; 8:45 am]
                                                                                                              Resources of the Gulf of Mexico (FMP),                   Lauren Waters, Southeast Regional
                                                 BILLING CODE 4333–15–P                                       as prepared by the Gulf of Mexico                        Office, NMFS, 263 13th Avenue South,
                                                                                                              Fishery Management Council (Council)                     St. Petersburg, FL 33701.
                                                                                                              (Amendment 47). For vermilion
                                                 DEPARTMENT OF COMMERCE                                                                                                   Instructions: Comments sent by any
                                                                                                              snapper, this proposed rule would
                                                                                                              revise the stock annual catch limit                      other method, to any other address or
                                                 National Oceanic and Atmospheric                                                                                      individual, or received after the end of
                                                 Administration                                               (ACL). Additionally, Amendment 47
                                                                                                              would establish a proxy for the estimate                 the comment period, may not be
                                                                                                              of the stock maximum sustainable yield                   considered by NMFS. All comments
                                                 50 CFR Part 622                                                                                                       received are a part of the public record
                                                                                                              (MSY). The purpose of this proposed
                                                 [Docket No. 170720688–7688–01]                               rule is to revise the stock ACL for                      and will generally be posted for public
                                                                                                              vermilion snapper in the Gulf of Mexico                  viewing on www.regulations.gov
                                                 RIN 0648–BH07                                                                                                         without change. All personal identifying
                                                                                                              (Gulf) consistent with the most recent
                                                 Fisheries of the Caribbean, Gulf of                          stock assessment.                                        information (e.g., name, address, etc.),
                                                 Mexico, and South Atlantic; Reef Fish                                                                                 confidential business information, or
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                                                                                                              DATES: Written comments must be                          otherwise sensitive information
                                                 Fishery of the Gulf of Mexico;                               received on or before January 26, 2018.
                                                 Vermilion Snapper Management                                                                                          submitted voluntarily by the sender will
                                                                                                              ADDRESSES: You may submit comments                       be publicly accessible. NMFS will
                                                 Measures; Amendment 47
                                                                                                              on the amendment identified by                           accept anonymous comments (enter
                                                 AGENCY:  National Marine Fisheries                           ‘‘NOAA–NMFS–2017–0106’’ by either                        ‘‘N/A’’ in the required fields if you wish
                                                 Service (NMFS), National Oceanic and                         of the following methods:                                to remain anonymous). Electronic
                                                 Atmospheric Administration (NOAA),                              • Electronic Submission: Submit all                   copies of Amendment 47, which
                                                 Commerce.                                                    electronic public comments via the                       includes an environmental assessment,


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Document Created: 2017-12-27 02:22:46
Document Modified: 2017-12-27 02:22:46
CategoryRegulatory Information
CollectionFederal Register
sudoc ClassAE 2.7:
GS 4.107:
AE 2.106:
PublisherOffice of the Federal Register, National Archives and Records Administration
SectionProposed Rules
ActionProposed rule.
DatesWe will consider comments and information received or postmarked on or before February 26, 2018. Comments submitted electronically using
ContactJanine Van Norman, Branch of Foreign Species, Ecological Services, U.S. Fish and Wildlife Service, MS: ES, 5275 Leesburg Pike, Falls Church, VA 22041-3803; telephone, 703-358- 2171; facsimile, 703-358-2499. If you use a telecommunications device for the deaf (TDD), call the Federal Relay Service at 800-877-8339.
FR Citation82 FR 61230 
RIN Number1018-BC83
CFR AssociatedEndangered and Threatened Species; Exports; Imports; Reporting and Recordkeeping Requirements and Transportation

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