83_FR_493 83 FR 490 - Endangered and Threatened Wildlife and Plants; Endangered Species Status for Barrens Topminnow

83 FR 490 - Endangered and Threatened Wildlife and Plants; Endangered Species Status for Barrens Topminnow

DEPARTMENT OF THE INTERIOR
Fish and Wildlife Service

Federal Register Volume 83, Issue 3 (January 4, 2018)

Page Range490-498
FR Document2017-28491

We, the U.S. Fish and Wildlife Service (Service), propose to list the Barrens topminnow (Fundulus julisia), a freshwater fish from Tennessee, as an endangered species under the Endangered Species Act (Act). If we finalize this rule as proposed, it would extend the Act's protections to this species.

Federal Register, Volume 83 Issue 3 (Thursday, January 4, 2018)
[Federal Register Volume 83, Number 3 (Thursday, January 4, 2018)]
[Proposed Rules]
[Pages 490-498]
From the Federal Register Online  [www.thefederalregister.org]
[FR Doc No: 2017-28491]


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DEPARTMENT OF THE INTERIOR

Fish and Wildlife Service

50 CFR Part 17

[Docket No. FWS-R4-ES-2017-0094; 4500030113]
RIN 1018-BC52


Endangered and Threatened Wildlife and Plants; Endangered Species 
Status for Barrens Topminnow

AGENCY: Fish and Wildlife Service, Interior.

ACTION: Proposed rule.

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SUMMARY: We, the U.S. Fish and Wildlife Service (Service), propose to 
list the Barrens topminnow (Fundulus julisia), a freshwater fish from 
Tennessee, as an endangered species under the Endangered Species Act 
(Act). If we finalize this rule as proposed, it would extend the Act's 
protections to this species.

DATES: We will accept comments received or postmarked on or before 
March 5, 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 20, 2018.

ADDRESSES: 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-R4-ES-2017-0094, 
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-R4-ES-2017-0094, 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: Mary Jennings, U.S. Fish and Wildlife 
Service, Tennessee Ecological Services Field Office, 446 Neal Street,

[[Page 491]]

Cookeville, TN 38506; telephone 931-528-6481. Persons who use a 
telecommunications device for the deaf (TDD) may call the Federal Relay 
Service at 800-877-8339.

SUPPLEMENTARY INFORMATION:

Information Requested

Public Comments

    We intend that any final action resulting from this proposed rule 
will be based on the best scientific and commercial data available and 
be as accurate and as effective as possible. Therefore, we request 
comments or information from other concerned governmental agencies, 
Native American tribes, the scientific community, industry, or any 
other interested parties concerning this proposed rule. We particularly 
seek comments concerning:
    (1) The Barrens topminnow's biology, range, 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 this 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 this species, 
including the locations of any additional populations of this species.
    (5) Information related to climate change within the range of the 
Barrens topminnow and how it may affect the species' habitat.
    (6) The reasons why areas should or should not be designated as 
critical habitat as provided by section 4 of the Act (16 U.S.C. 1531 et 
seq.).
    (7) Specific information on:
    (a) What areas, that are currently occupied and that contain the 
physical and biological features essential to the conservation of the 
Barrens topminnow, should be included in a critical habitat designation 
and why;
    (b) Special management considerations or protection that may be 
needed for the essential features in potential critical habitat areas, 
including managing for the potential effects of climate change; and
    (c) What areas not occupied at the time of listing are essential 
for the conservation of the species and why.
    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, Tennessee Ecological Services Field Office (see FOR 
FURTHER INFORMATION CONTACT).

Public Hearing

    Section 4(b)(5) of the Act requires us to conduct one or more 
public hearings on this proposal, if requested. Requests for a public 
hearing must be received within 45 days after the date of publication 
of this proposed rule in the Federal Register (see DATES, above) and 
must be sent to the address shown in FOR FURTHER INFORMATION CONTACT. 
We will schedule public hearings on this proposal, if 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.

Peer Review

    The purpose of peer review is to ensure that our listing 
determination is based on scientifically sound data, assumptions, and 
analyses. In accordance with our joint policy on peer review published 
in the Federal Register on July 1, 1994 (59 FR 34270), and our August 
22, 2016, memorandum updating and clarifying the role of peer review of 
listing actions under the Act, we sought the expert opinions of six 
appropriate specialists regarding the species status assessment (SSA) 
that informed this proposed rule. All of the peer reviewers have 
expertise in fish biology, habitat, and stressors to the Barrens 
topminnow. We received a response from one of the six peer reviewers, 
which we took into account in our SSA and this proposed rule. We invite 
any additional comment from the peer reviewers on the proposed rule 
during this public comment period; all comments received from peer 
reviewers will be available, along with other public comments, in the 
docket for this proposed rule on http://www.regulations.gov.

Previous Federal Actions

    The Barrens topminnow was initially proposed to be listed as 
endangered under the Act in 1977 (42 FR 65209; December 30, 1977). 
Because of comments received on the proposed critical habitat, the 
listing was postponed, and critical habitat was reproposed in 1979 (44 
FR 44418; July 27, 1979); however, the proposed listing rule was 
withdrawn in 1980, because it was not finalized within the required 2 
years (45 FR 5782; January 24, 1980, effective December 30, 1979). The 
Barrens topminnow was designated a Category 2 candidate species in 1982 
(47 FR 58454; December 30, 1982) until that list was discontinued in 
1996 (61 FR 7596; February 28, 1996), and it was not added to the 
revised candidate list. In 2010, the Center for Biological Diversity 
(CBD) petitioned the Service to list 404 aquatic, riparian, and wetland 
species from the southeastern United States, including the Barrens 
topminnow, as endangered or threatened under the Act. On September 27, 
2011, the Service published a substantial 90-day finding for 374 of the 
404 species, including the Barrens topminnow, soliciting information 
about, and initiating status reviews for, those species (76 FR 59836). 
In 2015, CBD filed a complaint against the Service for failure to 
timely

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complete a 12-month finding for the Barrens topminnow. In 2016, the 
Service entered into a settlement agreement with CBD, which specified 
that a 12-month finding for the Barrens topminnow would be delivered to 
the Federal Register by December 31, 2017.

Background

    A thorough review of the taxonomy, life history, ecology, and 
overall viability of the Barrens topminnow (Fundulus julisia) is 
presented in the SSA (Service 2017; available at http://www.regulations.gov). 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 
documents the results of the comprehensive biological status review for 
the Barrens topminnow, provides an account of the species' overall 
viability through forecasting of the species' condition in the future, 
and 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 as well as the risk analysis on which 
the determination is based (Service 2017, entire). The following 
discussion is a summary of the results and conclusions from the SSA.

Species Description

    The Barrens topminnow is a small, colorful fish that grows to 98 
millimeters (mm) (3.9 inches (in)). As is typical of its genus, 
Fundulus, the Barrens topminnow has an upturned mouth, flattened head 
and back, and rounded fins with the unpaired fins set far back on the 
body (Etnier and Starnes 1993, pp. 360-361). Reproductive males are 
very showy with bright, iridescent background colors of greens and 
blues, with reddish orange spots and yellow fins as well as tubercles 
(hardened projections) on the anal fin rays. Females, juveniles, and 
non-reproductive males are drabber, with pale brown bodies sprinkled 
with darker spots on the sides (Williams and Etnier 1982, entire; 
Etnier and Starnes 1993, pp. 365-366). A detailed description of scale 
and fin ray counts and other morphological features is provided in 
Williams and Etnier (1982, entire) and Etnier and Starnes (1993, p. 
365).

Reproduction and Lifespan

    Barrens topminnows spawn in filamentous algae near the water 
surface, between April and August, with peak activity occurring from 
May to June. Spawning occurs on multiple occasions, with a few eggs 
released during each spawning event. By the end of the spawning season, 
up to 300 eggs are released. While the maximum age of the Barrens 
topminnow is 4 years, adults typically live for 2 years or less, and 
only about one-third of individuals spawn more than one season (Rakes 
1989, p. 42; Etnier and Starnes 1993, p. 366). Most individuals mature 
and spawn within the first year, though some of the later spawned fish 
are in year 2 before they spawn (Rakes 1989, entire).
    Prey items consumed by Barrens topminnows consist predominantly of 
microcrustaceans and immature aquatic insect larvae. However, the 
species is a generalist feeder, also consuming small snails and 
terrestrial organisms such as ants and other insects that fall or 
wander into aquatic habitats (Rakes 1989, pp. 18-25).

Habitat and Range

    Barrens topminnow habitat is restricted to springhead pools and 
slow-flowing areas of spring runs on the Barrens Plateau in middle 
Tennessee. These fish are strongly associated with abundant aquatic 
vegetation such as filamentous algae (e.g., Cladophora and Pithophora), 
watercress (Nasturtium officinale), rushes (Juncus), pondweed 
(Potamogeton), and eelgrass (Vallisneria), and will occasionally 
shelter under overhanging terrestrial plants and tree roots. Barrens 
topminnows have only been found in streams where the predominant source 
of base flow is groundwater. Due to the groundwater influence of these 
habitats, temperatures are relatively stable, ranging from 15 to 25 
degrees Celsius ([deg]C) (59 to 77 degrees Fahrenheit ([deg]F)). The 
karst topography of the Barrens Plateau results in the presence of a 
number of spring systems, though not all of these have been inhabited 
by the Barrens topminnow. In times of drought, if the discharge of the 
springs is severely reduced, Barrens topminnows likely move downstream 
into more permanent water if suitable habitat is available.
    Historically, Barrens topminnows were found in Cannon, Coffee, and 
Warren Counties of Tennessee in three river systems, the Elk River, 
Duck River, and Caney Fork River. The Elk River and Duck River flow to 
the Tennessee River, and the Caney Fork River flows to the Cumberland 
River. The small streams or springs inhabited by Barrens topminnows in 
each river system are separated by hundreds of miles of intervening, 
unsuitable, larger stream habitat; therefore the individual populations 
are isolated and cannot come into contact with other populations by 
moving downstream. Within these three systems, the Barrens topminnow 
was known to occur in at least 18 sites (Hurt et al. 2017, p. 2). It is 
likely that many more sites were occupied, but were either not surveyed 
due to lack of access to private land, or were modified to be 
incompatible with Barrens topminnow presence for uses such as watering 
livestock before surveys could be conducted.
    Currently, the Barrens topminnow occurs in five sites: Marcum 
Spring (Ovaca Spring), Short Spring, Benedict Spring, McMahan Creek, 
and Greenbrook Pond. Marcum Spring and Short Spring are in the Duck 
River system. The remaining three springs are in the Caney Fork River 
system. Benedict Spring and McMahan Creek are occupied by native stock, 
while the three other occupied sites were reestablished with 
individuals from the Caney Fork system (see discussion under 
Conservation Actions and Regulatory Mechanisms, below). Greenbrook 
Pond, although it ultimately drains to the Caney Fork, is outside the 
known historical range of the species, in Dekalb County, Tennessee. 
Although no longer extant at its native locality, the Pond Spring 
population from the Elk River system is maintained in captivity at 
three facilities. Collectively, these captively held topminnows form an 
``ark population'' that is managed as part of a conservation strategy 
that will enable release back into the wild if Pond Spring can be 
restored.
    Estimates of current population size by site are lacking, but 
recent surveys (Kuhajda et al. 2014, entire; Kuhajda 2017, entire) 
reported the number of Barrens topminnows captured (Table 1, below), 
providing a rough approximation of the number of topminnows in each 
population. Based on these samples, Benedict Spring, Marcum Spring, and 
Greenbrook Pond had fairly robust populations, with at least, or likely 
with more than, 100 individuals. The population in McMahan Creek 
appeared to be small relative to other occupied sites, but this 
difference is at least partly an artifact of sampling bias. In stream 
habitat such as McMahan Creek, habitat structure makes it easier for 
fish to avoid the seine, and fish tend to be more broadly dispersed 
than they are in pond-like spring habitats.

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  Table 1--Number of Barrens Topminnows Captured by Site (Kuhajda 2017,
 Entire) McMahan Creek Number From 2017 Sampling (Service, Unpublished)
------------------------------------------------------------------------
                                                              Barrens
                                                            topminnows
                          Site                               captured
                                                              (year)
------------------------------------------------------------------------
Benedict Spring.........................................      100 (2016)
McMahan Creek...........................................       10 (2017)
Marcum Spring...........................................      132 (2015)
Short Spring............................................       30 (2015)
Greenbrook Pond.........................................       91 (2015)
------------------------------------------------------------------------

Species Needs

    In this section, we describe the needs of the species at the 
individual, population, and species level. We describe the Barrens 
topminnow's viability needs in terms of resiliency (ability of the 
populations to withstand stochastic events), redundancy (ability of the 
species to withstand large-scale, catastrophic events), and 
representation (the ability of the species to adapt to changing 
environmental conditions). In later sections, using various time frames 
and the current and projected resiliency, redundancy, and 
representation, we will describe the species' viability over time.
    Barrens topminnows need filamentous algae or other submerged 
vegetation for egg deposition and cover, and consistently cool water 
ranging from 15 to 25 [deg]C (59 to 77 [deg]F) that is sufficiently 
clear for mating display (Rakes, 1989, entire). For feeding, they need 
microcrustaceans and immature aquatic insect larvae (Rakes 1989, pp. 
18-25). At the larval and juvenile stage, it is essential that 
predation rates and competition from other fishes is low (Laha and 
Mattingly 2006, pp. 1, 6-10).
Resiliency
    For the Barrens topminnow to maintain viability, its populations or 
some portion thereof must be resilient. Stochastic events that affect 
resiliency are reasonably likely to occur infrequently, but are of a 
magnitude that can drastically alter the ecosystem where they happen. 
Classic examples of stochastic events include drought, major storms 
(hurricanes), fire, and landslides (Chapin et al. 2002, pp. 285-288). 
To be resilient to stochastic events populations of Barrens topminnow 
need to be sufficiently abundant, with several hundred individuals 
(Service 2017, p. 11) represented by adult and juvenile age classes. 
The larger the range, or spatial extent, occupied by a Barrens 
topminnow population, the more resilient the population will be to a 
stochastic event. Additionally, populations need to exist in locations 
where environmental conditions provide suitable habitat and water 
quality such that adequate numbers of individuals can be supported. 
Without all of these factors, a population has an increased likelihood 
of extirpation.
Representation
    Maintaining representation in the form of genetic diversity is 
important to the Barrens topminnow's capacity to adapt to environmental 
changes. Ecological diversity, another measure of species' 
representation, is naturally low, as the Barrens topminnow has always 
been restricted to spring habitats in a single physiographic province. 
Based on mitochondrial DNA, genetic variation of extant populations is 
extremely low, and there are fixed differences between the Caney Fork 
system populations and the Elk River system population (Hurt et al. 
2017, pp. 1, 5), which is from Pond Spring and is represented now only 
by individuals held in captivity. The captive Elk River population, for 
which there are two identified mitochondrial DNA haplotypes unique from 
the third haplotype present in all Caney Fork system sampled fish, 
should be considered an evolutionary significant unit (ESU) (Hurt et 
al. 2017, p. 5), a historically isolated population that is on an 
independent evolutionary trajectory (Moritz 1994, p. 373). Accordingly, 
reestablishing the captive Elk River population in the wild will be 
important to increasing genetic representation and species' viability.
Redundancy
    Finally, the Barrens topminnow needs to have multiple resilient 
populations distributed throughout its range to provide redundancy, the 
ability of the species to withstand catastrophic events. The more 
populations, and the wider the distribution of those populations, the 
more redundancy the species will exhibit. Redundancy reduces the risk 
that a large portion of the species' range will be negatively affected 
by a catastrophic natural or anthropogenic event at a given point in 
time. Species that are well-distributed across their historical range 
are considered less susceptible to extinction and have higher viability 
than species confined to a small portion of their range (Carroll et al. 
2010, entire; Redford et al. 2011, entire).

Summary of Biological Status and Threats

    Section 4 of the Act (16 U.S.C. 1533) and its implementing 
regulations (50 CFR part 424) set forth the procedures for determining 
whether a species is an ``endangered species'' or a ``threatened 
species.'' The Act defines an endangered species as a species that is 
``in danger of extinction throughout all or a significant portion of 
its range,'' and a threatened species as a species that is ``likely to 
become an endangered species within the foreseeable future throughout 
all or a significant portion of its range.'' The Act directs us to 
determine whether any species is an endangered species or a threatened 
species because of one or more of the following factors affecting its 
continued existence: (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.
    These factors represent broad categories of natural or human-caused 
actions or conditions that could have an effect on a species' continued 
existence. In evaluating these actions and conditions, we look for 
those that may have a negative effect on individuals of the species, as 
well as for those that may ameliorate any negative effects and those 
that may have positive effects.
    We use the term ``threat'' to refer in general to actions or 
conditions that are known to or are reasonably likely to negatively 
affect individuals of a species. The term ``threat'' includes actions 
or conditions that have a direct impact on individuals (direct 
impacts), as well as those that affect individuals through alteration 
of their habitat or required resources (stressors). A threat may 
encompass--either together or separately--the source of the action or 
condition, or the action or condition itself.
    However, the mere identification of any threat(s) does not 
necessarily mean that the species meets the statutory definition of an 
``endangered species'' or a ``threatened species.'' In determining 
whether a species meets either definition, we must evaluate all 
identified threats by considering the expected response by the species, 
and the effects of the threats--in light of those actions and 
conditions that will ameliorate the threats--on an individual, 
population, and species level. We evaluate each threat and its expected 
effects on the species, then analyze the cumulative effect of all of 
the threats on the species as a whole. We also consider the cumulative 
effect of the threats in light of those actions and conditions that 
will have positive effects on the species--such as any

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existing regulatory mechanisms or conservation efforts. It is only 
after conducting this cumulative analysis of threats and the actions 
that may ameliorate them or have positive effects on the species, and 
describing the expected effect on the species now and in the 
foreseeable future, that the Secretary can determine whether the 
species meets the definition of an ``endangered species'' or a 
``threatened species.'' We completed a comprehensive assessment of the 
biological status of the Barrens topminnow, and prepared a report of 
the assessment which provides a thorough account of the species' 
overall viability and evaluates the cumulative effects of the five 
listing factors (Service 2017, entire).

Risk Factors

    In the SSA, we assessed the potential risk factors (i.e., threats, 
stressors) that could be affecting the Barrens topminnow now and in the 
future. In this proposed rule, we will discuss only those factors in 
detail that could meaningfully impact the status of the species. Those 
risks that are not known to have effects on Barrens topminnow 
populations, such as collection and disease, are not discussed here.
    The primary risk factor affecting the status of the Barrens 
topminnow is western mosquitofish (Gambusia affinis), a species 
invasive to the Barrens Plateau that preys on young topminnows, 
harasses older individuals, and may compete with adults for space and 
food (Factor C).
    Western mosquitofish are native to Tennessee, but their range 
within the State was most likely confined to the Coastal Plain province 
(Etnier and Starnes 1993, p. 373), and they are not native to the 
Barrens Plateau. In many parts of North America, western mosquitofish 
were stocked in attempt to control mosquito larvae, which is presumably 
the means by which they were introduced to the Barrens Plateau in the 
mid twentieth century. Although to the best of our knowledge 
mosquitofish stocking stopped shortly thereafter, the species has 
spread and become a permanent inhabitant throughout most of the Barrens 
Plateau. Mosquitofish are well adapted to spread in habitats where they 
are introduced because they reproduce rapidly, spawning three to four 
cohorts per year of a few to a hundred or more individuals (Etnier and 
Starnes 1993, p. 373). They can move through very shallow water and 
have invaded sites connected by temporarily wetted areas created by 
floods. Mosquitofish prey on young topminnows and harass adults, 
causing recruitment failure such that only the adult age class remains 
after a spawning season (Goldsworthy and Bettoli 2006, p. 341; Laha and 
Mattingly 2007, p. 9). Under most circumstances, extirpation of Barrens 
topminnows occurs within 3 to 5 years of mosquitofish invading a site 
(Service 2017, p. 32). The five extant Barrens topminnow populations 
are at sites free of mosquitofish.
    As a consequence of the western mosquitofish invasion, the habitat 
available to the Barrens topminnow, and the species' range, has been 
curtailed (Factor A). Historically, Barrens topminnow populations were 
likely connected by floods and high flow events that washed individuals 
downstream or provided temporary connections across local stream 
divides. Most, if not all, pathways via flood-facilitated migration are 
no longer viable owing to the presence of mosquitofish. Many of the 
sites where the topminnow is extirpated currently have sufficient 
habitat quality to support populations (Kuhajda et al. 2014, entire; 
Kuhajda 2017, entire). Thus, it is the presence of mosquitofish rather 
than habitat that is limiting Barrens topminnow populations because 
mosquitofish prevent topminnows from colonizing previously occupied 
springs in their range. This reduction in connectivity contributes to 
reduced gene flow, which in turn reduces genetic diversity and species' 
representation. Additionally, the lost connectivity contributes to the 
diminished range (number of occupied sites), which has caused a 
reduction in species' redundancy.
    Reduced habitat availability has exacerbated the threat of drought 
(Factor E), which has greatest effect on one of the two remaining 
native populations, at Benedict Spring. Approximately once every 5 
years, drought results in Benedict Spring drying completely or nearly 
so, to the point that it can no longer support the Barrens topminnow. 
In these years, all topminnows are removed from Benedict Spring and 
placed in aquaria, where they are held until water levels return. Under 
natural (i.e., mosquitofish free) conditions, drought would not be a 
concern because Barrens topminnows would recolonize areas in wetter 
years; however, due to the widespread reduction in suitable habitat due 
to mosquitofish and the resulting small number of remaining 
populations, the loss of any population is a concern.

Conservation Actions and Regulatory Mechanisms

    There have been many targeted efforts since circa 1980 to conserve 
the Barrens topminnow. Without these efforts it is likely the species 
would persist only at one site, McMahan Spring, which has not gone dry 
during periods of drought and is not occupied by mosquitofish. In 2001, 
the Barrens Topminnow Working Group, consisting of the Tennessee 
Wildlife Resources Agency, the Service, universities, and nonprofit 
organizations, was created to coordinate actions such as habitat 
improvement, propagation, and reintroduction of the species in the 
wild. Since the initiation of the stocking program, more than 44,000 
Barrens topminnows have been reintroduced in 27 sites deemed to have 
appropriate habitat. Brood fish were taken from McMahan Creek and 
Benedict Spring in the Caney Fork watershed, and Pond Spring in the Elk 
River watershed. Reintroduction was unsuccessful at most of these 
sites, either because of insufficient or marginal habitat or the 
invasion of mosquitofish (Goldsworth and Bettoli 2005, entire). At the 
2016 Working Group meeting, the decision was made to stop the stocking 
program because it was no longer needed to maintain populations at 
suitable sites that lack mosquitofish, and at other sites, continued 
stocking was unlikely to establish self-sustaining populations.
    One of the stocked sites, Vervilla Spring, was situated in the 
Caney Fork watershed on land opportunistically purchased by the Service 
for Barrens topminnow reintroduction. When the land came under the 
management of Tennessee National Wildlife Refuge, mosquitofish were 
present in the spring on the property and topminnows were not. To 
improve habitat for topminnows at the site, spring pools were deepened, 
a concrete low water barrier was installed, and the mosquitofish 
removed with a piscicide. Topminnows from Benedict Spring were then 
stocked above the barrier. This population was stocked in 2001, and 
maintained viability until 2010, when mosquitofish reinvaded the spring 
during a flood. In 2011, only adults were present, and by 2013, no 
Barrens topminnows remained in Vervilla Spring.
    From the late 1980s into the 2000s, the Service's Partners for Fish 
and Wildlife program worked with landowners to exclude livestock from 
the springs and spring runs where Barrens topminnows occurred in an 
effort to curb sedimentation. None of these Partners agreements is 
currently active. However, there are still buffers that exclude 
livestock from topminnow habitat in place at some sites, many which 
have since been invaded by mosquitofish.

[[Page 495]]

Current Condition

    As discussed above, only five remaining populations of Barrens 
topminnow remain (see Table 1, above), in contrast to at least 18 
identified historical populations (occupied sites) and likely several 
more that were extirpated without having been first identified. Thus, 
there has been at least a 72 percent reduction in the number of 
populations in the wild. Furthermore, the number of native populations 
has been reduced by at least 89 percent. The only population known to 
be native in the Elk River watershed, from Pond Spring, is now 
maintained as a captive ``ark population'' at three facilities. In the 
Duck River system, native populations were extirpated by the late 1960s 
(Etnier and Starnes 1993, p. 366), and if there was any genetic 
component unique to the Duck River system, it has been lost. The only 
two remaining native populations are at Benedict Spring and McMahan 
Creek.
    In summary, the current condition for each of the conservation 
metrics of resiliency, redundancy, and representation is low. Regarding 
resiliency, four of the five extant populations are of moderate size, 
likely with 100 individuals or more. The other population is smaller, 
although based on recent surveys it appears to be persisting and 
recruiting new cohorts each year. However, even if the number of 
individuals in each population is sufficient to maintain future 
generations, all currently occupied sites are small and vulnerable to 
stochastic events, so that a disturbance would adversely affect a site 
and its whole population equally. Regarding redundancy, at least 16 of 
18 native populations (89 percent) have been lost, with only 5 
populations remaining in the wild. Thus, the spatial distribution of a 
naturally narrow-ranging endemic has become more concentrated, making 
the species more susceptible to a catastrophic event. Lastly, 
representation has been reduced and the species' adaptive capacity may 
be limited as there is little genetic variation between extant 
populations. Native stock from the Elk River and Duck River has been 
extirpated, although members of the Elk River population survive in 
captivity.

Future Condition

    As part of the SSA, we developed three future condition scenarios 
to capture the range of uncertainties regarding future threats and the 
projected responses by the Barrens topminnow. Our scenarios included a 
status quo scenario, which incorporated the current risk factors 
continuing on the same trajectory that they are on now. We also 
evaluated a best case scenario, under which management actions to 
exclude mosquitofish and reintroduce populations would occur. Finally, 
we evaluated a worst case scenario, under which no management actions 
would be applied and climate change would increase the frequency and 
magnitude of droughts and floods. Regarding the likelihood of each 
scenario transpiring, in the near future (3- to 5-year time frame), the 
status quo scenario was predicted to be ``very likely'' and best case 
and worst case scenarios were ``unlikely.'' For the SSA, the terms 
``very likely'' and ``unlikely'' as they apply to confidence are 70-90 
percent certain and 10-40 percent certain, respectively (IPCC 2014, p. 
2). In 20 to 30 years, the time frame constituting the extent of the 
foreseeable future, beyond which there is insufficient confidence in 
how threats will act, the best case scenario was predicted to be 
``unlikely'' and the status quo and worst case scenarios were ``as 
likely as not,'' defined as having a 40-70 percent certainty of 
occurrence (IPCC 2014, p. 2). Because we determined that the current 
condition of the Barrens topminnow was consistent with that of an 
endangered species (see Determination, below), and that it is very 
likely the current condition will persist through the near future, we 
are not presenting in any more detail how each scenario would likely 
act on species viability. Please refer to the SSA (Service 2017, pp. 
32-42) for the full analysis of future scenarios.

Determination

    Section 4 of the Act (16 U.S.C. 1533) and its implementing 
regulations (50 CFR part 424) set forth the procedures for determining 
whether a species meets the definition of ``endangered species'' or 
``threatened species.'' 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 a threatened species as any 
species ``that is likely to become endangered throughout all or a 
significant portion of its range within the foreseeable future.'' We 
have carefully assessed the best scientific and commercial information 
available and find that the Barrens topminnow is presently in danger of 
extinction throughout its entire range based on the severity and 
immediacy of threats currently impacting the species.
    The overall range of the Barrens topminnow has been significantly 
reduced (Factor A), and its remaining populations are threatened by 
mosquitofish (Factor C), drought, and small population size (Factor E) 
acting in combination to reduce the overall viability of the species. 
The risk of extinction is high because the remaining populations have a 
high risk of extirpation, are isolated, and have no potential for 
recolonization without intervening management actions. Therefore, on 
the basis of the best available scientific and commercial information, 
we propose listing the Barrens topminnow 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 the Barrens topminnow, as it is 
already in danger of extinction throughout its range because of the 
currently contracted range (loss of 79 percent of occupied sites), 
because the threats are occurring across the entire range of the 
species, and because the threats are ongoing currently and are expected 
to continue into the future.
    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 
Barrens topminnow is endangered throughout all of its range, no portion 
of its range can be ``significant'' for purposes of the definitions of 
``endangered species'' and ``threatened species.'' See the Final Policy 
on Interpretation of the Phrase ``Significant Portion of Its Range'' in 
the Endangered Species Act's Definitions of ``Endangered Species'' and 
``Threatened Species'' (79 FR 37578; July 1, 2014).

Available Conservation Measures

    Conservation measures provided to species listed as endangered or 
threatened species under the Act include recognition, recovery actions, 
requirements for Federal protection, and prohibitions against certain 
practices. Recognition through listing results in public awareness and 
conservation by Federal, State, Tribal, and local agencies; private 
organizations; and individuals. The Act encourages cooperation with the 
States and other countries and calls for recovery actions to be carried 
out for listed species. The protection required by Federal agencies and 
the prohibitions against certain activities are discussed, in part, 
below.
    The primary purpose of the Act is the conservation of endangered 
and threatened species and the ecosystems upon which they depend. The 
ultimate goal of such conservation efforts is the recovery of these 
listed species, so that they no longer need the protective measures of 
the Act. Subsection 4(f) of the Act calls for the Service to develop

[[Page 496]]

and implement recovery plans for the conservation of endangered and 
threatened species. The recovery planning process involves the 
identification of actions that are necessary to halt or reverse the 
species' decline by addressing the threats to its survival and 
recovery. The goal of this process is to restore listed species to a 
point where they are secure, self-sustaining, and functioning 
components of their ecosystems.
    Recovery planning includes the development of a recovery outline 
when a species is listed and preparation of a draft and final recovery 
plan. The recovery outline guides the immediate implementation of 
urgent recovery actions and describes the process to be used to develop 
a recovery plan. Subsequently, a recovery plan identifies recovery 
criteria for review of when a species may be ready for downlisting or 
delisting, and methods for monitoring recovery progress. Recovery plans 
also establish a framework for agencies to coordinate their recovery 
efforts and provide estimates of the cost of implementing recovery 
tasks. Recovery teams (composed of species experts, Federal and State 
agencies, nongovernmental organizations, and stakeholders) are often 
established to develop recovery plans. Revisions of the plan may be 
done to address continuing or new threats to the species, as new 
substantive information becomes available. We intend to make a recovery 
outline available to the public concurrent with the final listing rule, 
if listing continues to be warranted. When completed, the recovery 
outline, draft recovery plan, and the final recovery plan will be 
available on our website (http://www.fws.gov/endangered), or from our 
Tennessee Ecological Services Field Office (see FOR FURTHER INFORMATION 
CONTACT).
    Implementation of recovery actions generally requires the 
participation of a broad range of partners, including other Federal 
agencies, States, Tribes, nongovernmental organizations, businesses, 
and private landowners. Examples of recovery actions include habitat 
restoration (e.g., restoration of native vegetation), research, captive 
propagation and reintroduction, and outreach and education. The 
recovery of many listed species cannot be accomplished solely on 
Federal lands because their ranges may occur primarily or solely on 
non-Federal lands. To achieve recovery of these species requires 
cooperative conservation efforts on private, State, and Tribal lands. 
If this species is listed, funding for recovery actions will be 
available from a variety of sources, including Federal budgets, State 
programs, and cost share grants for non-Federal landowners, the 
academic community, and nongovernmental organizations. In addition, 
pursuant to section 6 of the Act, the State of Tennessee would be 
eligible for Federal funds to implement management actions that promote 
the protection or recovery of the Barrens topminnow. Information on our 
grant programs that are available to aid species recovery can be found 
at: http://www.fws.gov/grants.
    Although the Barrens topminnow is only proposed for listing under 
the Act at this time, please let us know if you are interested in 
participating in recovery efforts for this species. Additionally, we 
invite you to submit any new information on this species whenever it 
becomes available and any information you may have for recovery 
planning purposes (see FOR FURTHER INFORMATION CONTACT).
    Section 7(a) of the Act requires Federal agencies to evaluate their 
actions with respect to any species that is proposed or listed as an 
endangered or threatened species and with respect to its critical 
habitat, if any is designated. Regulations implementing this 
interagency cooperation provision of the Act are codified at 50 CFR 
part 402. Section 7(a)(4) of the Act requires Federal agencies to 
confer with the Service on any action that is likely to jeopardize the 
continued existence of a species proposed for listing or result in 
destruction or adverse modification of proposed critical habitat. If a 
species is listed subsequently, section 7(a)(2) of the Act requires 
Federal agencies to ensure that activities they authorize, fund, or 
carry out are not likely to jeopardize the continued existence of the 
species or destroy or adversely modify its critical habitat. If a 
Federal action may affect a listed species or its critical habitat, the 
responsible Federal agency must enter into consultation with the 
Service.
    Federal agency actions within the species' habitat that may require 
conference or consultation or both as described in the preceding 
paragraph include issuance of section 404 Clean Water Act (33 U.S.C. 
1251 et seq.) permits by the U.S. Army Corps of Engineers, construction 
and maintenance of roads or highways by the Federal Highway 
Administration, construction and maintenance of utility corridors by 
the Tennessee Valley Authority, and construction and maintenance of 
natural gas or oil pipeline corridors by the Federal Energy Regulatory 
Commission.
    The Act and its implementing regulations set forth a series of 
general prohibitions and exceptions that apply to endangered wildlife. 
The prohibitions of section 9(a)(1) of the Act, codified at 50 CFR 
17.21, 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 on the high 
seas. In addition, it is unlawful to import; export; deliver, receive, 
carry, transport, or ship in interstate or foreign commerce in the 
course of commercial activity; or sell or offer for sale in interstate 
or foreign commerce any listed species. It is also illegal to possess, 
sell, deliver, carry, transport, or ship any such wildlife that has 
been taken illegally. 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 to carry out otherwise prohibited activities 
involving endangered wildlife under certain circumstances. Regulations 
governing permits 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.
    It is our policy, as published in the Federal Register on July 1, 
1994 (59 FR 34272), to identify to the maximum extent practicable at 
the time a species is listed, those activities that would or would not 
constitute a violation of section 9 of the Act. The intent of this 
policy is to increase public awareness of the effect of a proposed 
listing on proposed and ongoing activities within the range of the 
species proposed for listing. Based on the best available information, 
if we list this species, the following actions are unlikely to result 
in a violation of section 9, if these activities are carried out in 
accordance with existing regulations and permit requirements; this list 
is not comprehensive:
    (1) Normal agricultural and silvicultural practices, including 
herbicide and pesticide use, which are carried out in accordance with 
any existing regulations, permit and label requirements, and best 
management practices; and
    (2) Normal residential landscape activities.
    Based on the best available information, if we list this species, 
the

[[Page 497]]

following activities may potentially result in a violation of section 9 
of the Act; this list is not comprehensive:
    (1) Intentional release of mosquitofish into occupied Barrens 
topminnow habitat;
    (2) Unauthorized handling or collecting of the species;
    (3) Modification of the water flow of any spring or stream in which 
the Barrens topminnow is known to occur;
    (4) Direct or indirect destruction of stream habitat; and
    (5) Discharge of chemicals or fill material into any waters in 
which the Barrens topminnow is known to occur.
    Questions regarding whether specific activities would constitute a 
violation of section 9 of the Act should be directed to the Tennessee 
Ecological Services Field Office (see FOR FURTHER INFORMATION CONTACT).

Critical Habitat

Background

    Critical habitat is defined in section 3 of the Act as:
    (1) The specific areas within the geographical area occupied by the 
species, at the time it is listed in accordance with the Act, on which 
are found those physical or biological features:
    (a) Essential to the conservation of the species, and
    (b) Which may require special management considerations or 
protection; and
    (2) Specific areas outside the geographical area occupied by the 
species at the time it is listed, upon a determination that such areas 
are essential for the conservation of the species.
    Conservation, as defined under section 3 of the Act, means to use 
and the use of all methods and procedures that are necessary to bring 
an endangered or threatened species to the point at which the measures 
provided pursuant to the Act are no longer necessary.
    Such methods and procedures include, but are not limited to, all 
activities associated with scientific resources management such as 
research, census, law enforcement, habitat acquisition and maintenance, 
propagation, live trapping, and transplantation, and, in the 
extraordinary case where population pressures within a given ecosystem 
cannot be otherwise relieved, may include regulated taking.
    Critical habitat receives protection under section 7 of the Act 
through the requirement that Federal agencies ensure, in consultation 
with the Service, that any action they authorize, fund, or carry out is 
not likely to result in the destruction or adverse modification of 
critical habitat. The designation of critical habitat does not affect 
land ownership or establish a refuge, wilderness, reserve, preserve, or 
other conservation area. Such designation does not allow the government 
or public to access private lands. Such designation does not require 
implementation of restoration, recovery, or enhancement measures by 
non-Federal landowners. Where a landowner requests Federal agency 
funding or authorization for an action that may affect a listed species 
or critical habitat, the consultation requirements of section 7(a)(2) 
of the Act would apply, but even in the event of a destruction or 
adverse modification finding, the obligation of the Federal action 
agency and the landowner is not to restore or recover the species, but 
to implement reasonable and prudent alternatives to avoid destruction 
or adverse modification of critical habitat.
    Section 4 of the Act requires that we designate critical habitat on 
the basis of the best scientific data available. Further, our Policy on 
Information Standards Under the Endangered Species Act (published in 
the Federal Register on July 1, 1994 (59 FR 34271)), the Information 
Quality Act (section 515 of the Treasury and General Government 
Appropriations Act for Fiscal Year 2001 (Pub. L. 106-554; H.R. 5658), 
and our associated Information Quality Guidelines, provide criteria, 
establish procedures, and provide guidance to ensure that our decisions 
are based on the best scientific data available. They require our 
biologists, to the extent consistent with the Act and with the use of 
the best scientific data available, to use primary and original sources 
of information as the basis for recommendations to designate critical 
habitat.

Prudency Determination

    Section 4(a)(3) of the Act, as amended, and implementing 
regulations (50 CFR 424.12), require that, to the maximum extent 
prudent and determinable, the Secretary designate critical habitat at 
the time the species is determined to be endangered or threatened. Our 
regulations (50 CFR 424.12(a)(1)) state that the designation of 
critical habitat is not prudent when one or both of the following 
situations exist: (1) The species is threatened by taking or other 
human activity, and identification of critical habitat can be expected 
to increase the degree of threat to the species, or (2) such 
designation of critical habitat would not be beneficial to the species.
    As discussed above and in the SSA, there is currently no imminent 
threat to the Barrens topminnow of take attributed to collection or 
vandalism (Factor B), and identification and mapping of critical 
habitat would not likely to increase any such threat. In the absence of 
finding that the designation of critical habitat would increase threats 
to a species, if there are any benefits to a critical habitat 
designation, then a prudent finding is warranted. The potential 
benefits of designation include: (1) Triggering consultation under 
section 7 of the Act in new areas for actions in which there may be a 
Federal nexus where it would not otherwise occur because, for example, 
it is or has become unoccupied or the occupancy is in question; (2) 
focusing conservation activities on the most essential features and 
areas; (3) providing educational benefits to State or county 
governments or private entities; and (4) preventing people from causing 
inadvertent harm to the species. Therefore, because we have determined 
that the designation of critical habitat will not likely increase the 
degree of threat to these species and may provide some measure of 
benefit, we find that designation of critical habitat is prudent for 
the Barrens topminnow.

Critical Habitat Determinability

    Having determined that designation is prudent, under section 
4(a)(3) of the Act we must find whether critical habitat for the 
species is determinable. Our regulations at 50 CFR 424.12(a)(2) state 
that critical habitat is not determinable when one or both of the 
following situations exist: (1) Information sufficient to perform 
required analyses of the impacts of the designation is lacking, or (2) 
The biological needs of the species are not sufficiently well known to 
permit identification of an area as critical habitat. As discussed 
above, we have reviewed the available information pertaining to the 
biological needs of this species and the habitat characteristics where 
this species is located. However, a careful assessment of the economic 
impacts that may occur due to a critical habitat designation is 
ongoing, and we are in the process of working with the States and other 
partners in acquiring the complex information needed to perform that 
assessment. Until these efforts are complete, information sufficient to 
perform a required analysis of the impacts of the designation is 
lacking, and, therefore, we find designation of critical habitat for 
this species to be not determinable at this time. However, we

[[Page 498]]

expect to have the necessary information, and publish a proposed rule 
in the Federal Register, in the near future.

Required Determinations

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 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, 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 is available in Appendix A of 
the SSA (Service 2017. Species Status Assessment Report for the Barrens 
Topminnow (Fundulus julisia), Version 1.0. Cookeville, TN), available 
online at http://www.regulations.gov under Docket No. FWS-R4-ES-2017-
0094.

Authors

    The primary authors of this proposed rule are the staff members of 
the Tennessee Ecological Services Field Office.

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. Amend Sec.  17.11(h) by adding an entry for ``Topminnow, Barrens'' 
to the List of Endangered and Threatened Wildlife in alphabetical order 
under FISHES to read as follows:


Sec.  17.11  Endangered and threatened wildlife.

* * * * *
    (h) * * *

----------------------------------------------------------------------------------------------------------------
                                                                                              Listing citations
            Common name                Scientific name          Where listed       Status   and applicable rules
----------------------------------------------------------------------------------------------------------------
 
                                                  * * * * * * *
              Fishes
 
                                                  * * * * * * *
Topminnow, Barrens................  Fundulus julisia.....  Wherever found.......        E   [Insert Federal
                                                                                             Register citation
                                                                                             when published as a
                                                                                             final rule]
 
                                                  * * * * * * *
----------------------------------------------------------------------------------------------------------------


     Dated: December 3, 2017.
 James W. Kurth,
Deputy Director for U.S. Fish and Wildlife Service, Exercising the 
Authority of the Director for U.S. Fish and Wildlife Service.
[FR Doc. 2017-28491 Filed 1-3-18; 8:45 am]
 BILLING CODE 4333-15-P



                                                 490                     Federal Register / Vol. 83, No. 3 / Thursday, January 4, 2018 / Proposed Rules

                                                 language. This means that each rule we                  References Cited                                       DEPARTMENT OF THE INTERIOR
                                                 publish must:
                                                    (a) Be logically organized;                            A complete list of all references cited              Fish and Wildlife Service
                                                                                                         in this proposed rule is available at
                                                    (b) Use the active voice to address
                                                                                                         http://www.regulations.gov or upon                     50 CFR Part 17
                                                 readers directly;
                                                                                                         request from the person listed under FOR
                                                    (c) Use clear language rather than                                                                          [Docket No. FWS–R4–ES–2017–0094;
                                                                                                         FURTHER INFORMATION CONTACT.                           4500030113]
                                                 jargon;
                                                    (d) Be divided into short sections and               Authors                                                RIN 1018–BC52
                                                 sentences; and
                                                                                                           The primary authors of this proposed                 Endangered and Threatened Wildlife
                                                    (e) Use lists and tables wherever                    rule are staff members of the Service’s
                                                 possible.                                                                                                      and Plants; Endangered Species
                                                                                                         Oregon Fish and Wildlife Office.                       Status for Barrens Topminnow
                                                    If you feel that we have not met these
                                                 requirements, send us comments by one                   List of Subjects in 50 CFR Part 17                     AGENCY:   Fish and Wildlife Service,
                                                 of the methods listed in ADDRESSES. To                                                                         Interior.
                                                 better help us revise the rule, your                      Endangered and threatened species,
                                                                                                                                                                ACTION: Proposed rule.
                                                 comments should be as specific as                       Exports, Imports, Reporting and
                                                 possible. For example, you should tell                  recordkeeping requirements,                            SUMMARY:     We, the U.S. Fish and
                                                 us the names of the sections or                         Transportation.                                        Wildlife Service (Service), propose to
                                                 paragraphs that are unclearly written,                                                                         list the Barrens topminnow (Fundulus
                                                                                                         Proposed Regulation Promulgation
                                                 which sections or sentences are too                                                                            julisia), a freshwater fish from
                                                 long, the sections where you feel lists or                 Accordingly, we hereby propose to                   Tennessee, as an endangered species
                                                 tables would be useful, etc.                            amend part 17, subchapter B of chapter                 under the Endangered Species Act (Act).
                                                                                                         I, title 50 of the Code of Federal                     If we finalize this rule as proposed, it
                                                 National Environmental Policy Act                                                                              would extend the Act’s protections to
                                                                                                         Regulations, as set forth below:
                                                   We have determined that                                                                                      this species.
                                                 environmental assessments and                           PART 17—ENDANGERED AND                                 DATES: We will accept comments
                                                 environmental impact statements, as                     THREATENED WILDLIFE AND PLANTS                         received or postmarked on or before
                                                 defined under the authority of the                                                                             March 5, 2018. Comments submitted
                                                 National Environmental Policy Act of                    ■ 1. The authority citation for part 17                electronically using the Federal
                                                 1969 (42 U.S.C. 4321 et seq.), need not                 continues to read as follows:                          eRulemaking Portal (see ADDRESSES,
                                                 be prepared in connection with                                                                                 below) must be received by 11:59 p.m.
                                                                                                           Authority: 16 U.S.C. 1361–1407; 1531–                Eastern Time on the closing date. We
                                                 regulations pursuant to section 4(a) of
                                                                                                         1544; and 4201–4245, unless otherwise                  must receive requests for public
                                                 the Act. We published a notice outlining
                                                                                                         noted.
                                                 our reasons for this determination in the                                                                      hearings, in writing, at the address
                                                 Federal Register on October 25, 1983                    § 17.11    [Amended]                                   shown in FOR FURTHER INFORMATION
                                                 (48 FR 49244).                                                                                                 CONTACT by February 20, 2018.
                                                                                                         ■ 2. Amend § 17.11(h) by removing the                  ADDRESSES: You may submit comments
                                                 Government-to-Government                                entry for ‘‘Dace, Foskett speckled’’
                                                 Relationship With Tribes                                                                                       by one of the following methods:
                                                                                                         under FISHES from the List of                             (1) Electronically: Go to the Federal
                                                   In accordance with the President’s                    Endangered and Threatened Wildlife.                    eRulemaking Portal: http://
                                                 memorandum of April 29, 1994,                                                                                  www.regulations.gov. In the Search box,
                                                                                                         § 17.44    [Amended]
                                                 Government-to-Government Relations                                                                             enter FWS–R4–ES–2017–0094, which is
                                                 with Native American Tribal                             ■ 3. Amend § 17.44(j) by:                              the docket number for this rulemaking.
                                                 Governments (59 FR 22951), Executive                    ■ a. Removing the words ‘‘and Foskett                  Then, in the Search panel on the left
                                                 Order 13175, and the Department of the                  speckled dace (Rhinichthys osculus                     side of the screen, under the Document
                                                 Interior’s manual at 512 DM 2, we                                                                              Type heading, click on the Proposed
                                                                                                         subspecies)’’ from the introductory text;
                                                 readily acknowledge our responsibility                                                                         Rules link to locate this document. You
                                                                                                         and
                                                 to communicate meaningfully with                                                                               may submit a comment by clicking on
                                                 recognized Federal Tribes on a                          ■ b. In paragraphs (j)(1) and (j)(2),                  ‘‘Comment Now!’’
                                                 government-to-government basis. In                      removing the word ‘‘these’’ in both                       (2) By hard copy: Submit by U.S. mail
                                                 accordance with Secretarial Order 3206                  places it appears and adding in its place              or hand-delivery to: Public Comments
                                                 of June 5, 1997 (American Indian Tribal                 the word ‘‘this’’.                                     Processing, Attn: FWS–R4–ES–2017–
                                                 Rights, Federal-Tribal Trust                              Dated: November 15, 2017.                            0094, U.S. Fish and Wildlife Service,
                                                 Responsibilities, and the Endangered                                                                           MS: BPHC, 5275 Leesburg Pike, Falls
                                                                                                         James W. Kurth,
                                                 Species Act), we readily acknowledge                                                                           Church, VA 22041–3803.
                                                 our responsibilities to work directly                   Deputy Director for U.S. Fish and Wildlife                We request that you send comments
                                                                                                         Service Exercising the Authority of the                only by the methods described above.
                                                 with Tribes in developing programs for
                                                                                                         Director for U.S. Fish and Wildlife Service.           We will post all comments on http://
                                                 healthy ecosystems, to acknowledge that
                                                                                                         [FR Doc. 2017–28465 Filed 1–3–18; 8:45 am]             www.regulations.gov. This generally
                                                 Tribal lands are not subject to the same
rmajette on DSKBCKNHB2PROD with PROPOSALS




                                                 controls as Federal public lands, to                    BILLING CODE 4333–15–P                                 means that we will post any personal
                                                 remain sensitive to Indian culture, and                                                                        information you provide us (see Public
                                                 to make information available to Tribes.                                                                       Comments, below, for more
                                                   We do not believe that any Tribes will                                                                       information).
                                                 be affected by this rule. However, we                                                                          FOR FURTHER INFORMATION CONTACT:
                                                 have contacted the Burns Paiute Tribe to                                                                       Mary Jennings, U.S. Fish and Wildlife
                                                 coordinate with them regarding the                                                                             Service, Tennessee Ecological Services
                                                 proposed rule.                                                                                                 Field Office, 446 Neal Street,


                                            VerDate Sep<11>2014   14:56 Jan 03, 2018   Jkt 244001   PO 00000   Frm 00017   Fmt 4702   Sfmt 4702   E:\FR\FM\04JAP1.SGM   04JAP1


                                                                         Federal Register / Vol. 83, No. 3 / Thursday, January 4, 2018 / Proposed Rules                                             491

                                                 Cookeville, TN 38506; telephone 931–                       (b) Special management                              hearings, as well as how to obtain
                                                 528–6481. Persons who use a                             considerations or protection that may be               reasonable accommodations, in the
                                                 telecommunications device for the deaf                  needed for the essential features in                   Federal Register and local newspapers
                                                 (TDD) may call the Federal Relay                        potential critical habitat areas, including            at least 15 days before the hearing.
                                                 Service at 800–877–8339.                                managing for the potential effects of
                                                                                                                                                                Peer Review
                                                 SUPPLEMENTARY INFORMATION:                              climate change; and
                                                                                                            (c) What areas not occupied at the                    The purpose of peer review is to
                                                 Information Requested                                   time of listing are essential for the                  ensure that our listing determination is
                                                 Public Comments                                         conservation of the species and why.                   based on scientifically sound data,
                                                                                                            Please include sufficient information               assumptions, and analyses. In
                                                   We intend that any final action                       with your submission (such as scientific               accordance with our joint policy on peer
                                                 resulting from this proposed rule will be               journal articles or other publications) to             review published in the Federal
                                                 based on the best scientific and                        allow us to verify any scientific or                   Register on July 1, 1994 (59 FR 34270),
                                                 commercial data available and be as                     commercial information you include.                    and our August 22, 2016, memorandum
                                                 accurate and as effective as possible.                     Please note that submissions merely                 updating and clarifying the role of peer
                                                 Therefore, we request comments or                       stating support for or opposition to the               review of listing actions under the Act,
                                                 information from other concerned                        action under consideration without                     we sought the expert opinions of six
                                                 governmental agencies, Native                           providing supporting information,                      appropriate specialists regarding the
                                                 American tribes, the scientific                         although noted, will not be considered                 species status assessment (SSA) that
                                                 community, industry, or any other                       in making a determination, as section                  informed this proposed rule. All of the
                                                 interested parties concerning this                      4(b)(1)(A) of the Act directs that                     peer reviewers have expertise in fish
                                                 proposed rule. We particularly seek                     determinations as to whether any                       biology, habitat, and stressors to the
                                                 comments concerning:                                    species is an endangered or threatened                 Barrens topminnow. We received a
                                                   (1) The Barrens topminnow’s biology,                                                                         response from one of the six peer
                                                                                                         species must be made ‘‘solely on the
                                                 range, and population trends, including:                                                                       reviewers, which we took into account
                                                   (a) Biological or ecological                          basis of the best scientific and
                                                                                                         commercial data available.’’                           in our SSA and this proposed rule. We
                                                 requirements of the species, including
                                                                                                            You may submit your comments and                    invite any additional comment from the
                                                 habitat requirements for feeding,
                                                                                                         materials concerning this proposed rule                peer reviewers on the proposed rule
                                                 breeding, and sheltering;
                                                   (b) Genetics and taxonomy;                            by one of the methods listed in                        during this public comment period; all
                                                   (c) Historical and current range,                     ADDRESSES. We request that you send                    comments received from peer reviewers
                                                 including distribution patterns;                        comments only by the methods                           will be available, along with other
                                                   (d) Historical and current population                 described in ADDRESSES.                                public comments, in the docket for this
                                                 levels, and current and projected trends;                  If you submit information via http://               proposed rule on http://
                                                 and                                                     www.regulations.gov, your entire                       www.regulations.gov.
                                                   (e) Past and ongoing conservation                     submission—including any personal
                                                                                                                                                                Previous Federal Actions
                                                 measures for the species, its habitat, or               identifying information—will be posted
                                                                                                         on the website. If your submission is                     The Barrens topminnow was initially
                                                 both.
                                                   (2) Factors that may affect the                       made via a hardcopy that includes                      proposed to be listed as endangered
                                                 continued existence of the species,                     personal identifying information, you                  under the Act in 1977 (42 FR 65209;
                                                 which may include habitat modification                  may request at the top of your document                December 30, 1977). Because of
                                                 or destruction, overutilization, disease,               that we withhold this information from                 comments received on the proposed
                                                 predation, the inadequacy of existing                   public review. However, we cannot                      critical habitat, the listing was
                                                 regulatory mechanisms, or other natural                 guarantee that we will be able to do so.               postponed, and critical habitat was
                                                 or manmade factors.                                     We will post all hardcopy submissions                  reproposed in 1979 (44 FR 44418; July
                                                   (3) Biological, commercial trade, or                  on http://www.regulations.gov.                         27, 1979); however, the proposed listing
                                                 other relevant data concerning any                         Comments and materials we receive,                  rule was withdrawn in 1980, because it
                                                 threats (or lack thereof) to this species               as well as supporting documentation we                 was not finalized within the required 2
                                                 and existing regulations that may be                    used in preparing this proposed rule,                  years (45 FR 5782; January 24, 1980,
                                                 addressing those threats.                               will be available for public inspection                effective December 30, 1979). The
                                                   (4) Additional information concerning                 on http://www.regulations.gov, or by                   Barrens topminnow was designated a
                                                 the historical and current status, range,               appointment, during normal business                    Category 2 candidate species in 1982 (47
                                                 distribution, and population size of this               hours, at the U.S. Fish and Wildlife                   FR 58454; December 30, 1982) until that
                                                 species, including the locations of any                 Service, Tennessee Ecological Services                 list was discontinued in 1996 (61 FR
                                                 additional populations of this species.                 Field Office (see FOR FURTHER                          7596; February 28, 1996), and it was not
                                                   (5) Information related to climate                    INFORMATION CONTACT).                                  added to the revised candidate list. In
                                                 change within the range of the Barrens                                                                         2010, the Center for Biological Diversity
                                                                                                         Public Hearing                                         (CBD) petitioned the Service to list 404
                                                 topminnow and how it may affect the
                                                 species’ habitat.                                         Section 4(b)(5) of the Act requires us               aquatic, riparian, and wetland species
                                                   (6) The reasons why areas should or                   to conduct one or more public hearings                 from the southeastern United States,
                                                 should not be designated as critical                    on this proposal, if requested. Requests               including the Barrens topminnow, as
                                                 habitat as provided by section 4 of the                 for a public hearing must be received                  endangered or threatened under the Act.
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                                                 Act (16 U.S.C. 1531 et seq.).                           within 45 days after the date of                       On September 27, 2011, the Service
                                                   (7) Specific information on:                          publication of this proposed rule in the               published a substantial 90-day finding
                                                   (a) What areas, that are currently                    Federal Register (see DATES, above) and                for 374 of the 404 species, including the
                                                 occupied and that contain the physical                  must be sent to the address shown in                   Barrens topminnow, soliciting
                                                 and biological features essential to the                FOR FURTHER INFORMATION CONTACT. We                    information about, and initiating status
                                                 conservation of the Barrens topminnow,                  will schedule public hearings on this                  reviews for, those species (76 FR 59836).
                                                 should be included in a critical habitat                proposal, if requested, and announce                   In 2015, CBD filed a complaint against
                                                 designation and why;                                    the dates, times, and places of those                  the Service for failure to timely


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                                                 492                     Federal Register / Vol. 83, No. 3 / Thursday, January 4, 2018 / Proposed Rules

                                                 complete a 12-month finding for the                     during each spawning event. By the end                 populations by moving downstream.
                                                 Barrens topminnow. In 2016, the                         of the spawning season, up to 300 eggs                 Within these three systems, the Barrens
                                                 Service entered into a settlement                       are released. While the maximum age of                 topminnow was known to occur in at
                                                 agreement with CBD, which specified                     the Barrens topminnow is 4 years,                      least 18 sites (Hurt et al. 2017, p. 2). It
                                                 that a 12-month finding for the Barrens                 adults typically live for 2 years or less,             is likely that many more sites were
                                                 topminnow would be delivered to the                     and only about one-third of individuals                occupied, but were either not surveyed
                                                 Federal Register by December 31, 2017.                  spawn more than one season (Rakes                      due to lack of access to private land, or
                                                                                                         1989, p. 42; Etnier and Starnes 1993, p.               were modified to be incompatible with
                                                 Background
                                                                                                         366). Most individuals mature and                      Barrens topminnow presence for uses
                                                    A thorough review of the taxonomy,                   spawn within the first year, though
                                                 life history, ecology, and overall                                                                             such as watering livestock before
                                                                                                         some of the later spawned fish are in
                                                 viability of the Barrens topminnow                                                                             surveys could be conducted.
                                                                                                         year 2 before they spawn (Rakes 1989,
                                                 (Fundulus julisia) is presented in the                  entire).                                                  Currently, the Barrens topminnow
                                                 SSA (Service 2017; available at http://                   Prey items consumed by Barrens                       occurs in five sites: Marcum Spring
                                                 www.regulations.gov). In the SSA, we                    topminnows consist predominantly of                    (Ovaca Spring), Short Spring, Benedict
                                                 summarize the relevant biological data                  microcrustaceans and immature aquatic                  Spring, McMahan Creek, and
                                                 and a description of past, present, and                 insect larvae. However, the species is a               Greenbrook Pond. Marcum Spring and
                                                 likely future stressors, and conduct an                 generalist feeder, also consuming small                Short Spring are in the Duck River
                                                 analysis of the viability of the species.               snails and terrestrial organisms such as               system. The remaining three springs are
                                                 The SSA documents the results of the                    ants and other insects that fall or                    in the Caney Fork River system.
                                                 comprehensive biological status review                  wander into aquatic habitats (Rakes                    Benedict Spring and McMahan Creek
                                                 for the Barrens topminnow, provides an                  1989, pp. 18–25).                                      are occupied by native stock, while the
                                                 account of the species’ overall viability
                                                                                                         Habitat and Range                                      three other occupied sites were
                                                 through forecasting of the species’
                                                 condition in the future, and provides                      Barrens topminnow habitat is                        reestablished with individuals from the
                                                 the scientific basis that informs our                   restricted to springhead pools and slow-               Caney Fork system (see discussion
                                                 regulatory decision regarding whether                   flowing areas of spring runs on the                    under Conservation Actions and
                                                 this species should be listed as an                     Barrens Plateau in middle Tennessee.                   Regulatory Mechanisms, below).
                                                 endangered or threatened species under                  These fish are strongly associated with                Greenbrook Pond, although it ultimately
                                                 the Act as well as the risk analysis on                 abundant aquatic vegetation such as                    drains to the Caney Fork, is outside the
                                                 which the determination is based                        filamentous algae (e.g., Cladophora and                known historical range of the species, in
                                                 (Service 2017, entire). The following                   Pithophora), watercress (Nasturtium                    Dekalb County, Tennessee. Although no
                                                 discussion is a summary of the results                  officinale), rushes (Juncus), pondweed                 longer extant at its native locality, the
                                                 and conclusions from the SSA.                           (Potamogeton), and eelgrass                            Pond Spring population from the Elk
                                                                                                         (Vallisneria), and will occasionally                   River system is maintained in captivity
                                                 Species Description                                     shelter under overhanging terrestrial                  at three facilities. Collectively, these
                                                    The Barrens topminnow is a small,                    plants and tree roots. Barrens                         captively held topminnows form an
                                                 colorful fish that grows to 98                          topminnows have only been found in                     ‘‘ark population’’ that is managed as
                                                 millimeters (mm) (3.9 inches (in)). As is               streams where the predominant source                   part of a conservation strategy that will
                                                 typical of its genus, Fundulus, the                     of base flow is groundwater. Due to the                enable release back into the wild if Pond
                                                 Barrens topminnow has an upturned                       groundwater influence of these habitats,               Spring can be restored.
                                                 mouth, flattened head and back, and                     temperatures are relatively stable,
                                                 rounded fins with the unpaired fins set                 ranging from 15 to 25 degrees Celsius                     Estimates of current population size
                                                 far back on the body (Etnier and Starnes                (°C) (59 to 77 degrees Fahrenheit (°F)).               by site are lacking, but recent surveys
                                                 1993, pp. 360–361). Reproductive males                  The karst topography of the Barrens                    (Kuhajda et al. 2014, entire; Kuhajda
                                                 are very showy with bright, iridescent                  Plateau results in the presence of a                   2017, entire) reported the number of
                                                 background colors of greens and blues,                  number of spring systems, though not                   Barrens topminnows captured (Table 1,
                                                 with reddish orange spots and yellow                    all of these have been inhabited by the                below), providing a rough
                                                 fins as well as tubercles (hardened                     Barrens topminnow. In times of                         approximation of the number of
                                                 projections) on the anal fin rays.                      drought, if the discharge of the springs               topminnows in each population. Based
                                                 Females, juveniles, and non-                            is severely reduced, Barrens                           on these samples, Benedict Spring,
                                                 reproductive males are drabber, with                    topminnows likely move downstream                      Marcum Spring, and Greenbrook Pond
                                                 pale brown bodies sprinkled with                        into more permanent water if suitable                  had fairly robust populations, with at
                                                 darker spots on the sides (Williams and                 habitat is available.                                  least, or likely with more than, 100
                                                 Etnier 1982, entire; Etnier and Starnes                    Historically, Barrens topminnows                    individuals. The population in
                                                 1993, pp. 365–366). A detailed                          were found in Cannon, Coffee, and                      McMahan Creek appeared to be small
                                                 description of scale and fin ray counts                 Warren Counties of Tennessee in three
                                                                                                                                                                relative to other occupied sites, but this
                                                 and other morphological features is                     river systems, the Elk River, Duck River,
                                                                                                                                                                difference is at least partly an artifact of
                                                 provided in Williams and Etnier (1982,                  and Caney Fork River. The Elk River
                                                                                                         and Duck River flow to the Tennessee                   sampling bias. In stream habitat such as
                                                 entire) and Etnier and Starnes (1993, p.                                                                       McMahan Creek, habitat structure
                                                 365).                                                   River, and the Caney Fork River flows
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                                                                                                         to the Cumberland River. The small                     makes it easier for fish to avoid the
                                                 Reproduction and Lifespan                               streams or springs inhabited by Barrens                seine, and fish tend to be more broadly
                                                    Barrens topminnows spawn in                          topminnows in each river system are                    dispersed than they are in pond-like
                                                 filamentous algae near the water                        separated by hundreds of miles of                      spring habitats.
                                                 surface, between April and August, with                 intervening, unsuitable, larger stream
                                                 peak activity occurring from May to                     habitat; therefore the individual
                                                 June. Spawning occurs on multiple                       populations are isolated and cannot
                                                 occasions, with a few eggs released                     come into contact with other


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                                                                         Federal Register / Vol. 83, No. 3 / Thursday, January 4, 2018 / Proposed Rules                                                493

                                                     TABLE 1—NUMBER OF BARRENS                           populations need to exist in locations                 ‘‘endangered species’’ or a ‘‘threatened
                                                    TOPMINNOWS CAPTURED BY SITE                          where environmental conditions                         species.’’ The Act defines an
                                                    (KUHAJDA 2017, ENTIRE) MCMAHAN                       provide suitable habitat and water                     endangered species as a species that is
                                                    CREEK NUMBER FROM 2017 SAM-                          quality such that adequate numbers of                  ‘‘in danger of extinction throughout all
                                                                                                         individuals can be supported. Without                  or a significant portion of its range,’’ and
                                                    PLING (SERVICE, UNPUBLISHED)
                                                                                                         all of these factors, a population has an              a threatened species as a species that is
                                                                                         Barrens
                                                                                                         increased likelihood of extirpation.                   ‘‘likely to become an endangered
                                                                                       topminnows                                                               species within the foreseeable future
                                                              Site                                  Representation
                                                                                         captured                                                               throughout all or a significant portion of
                                                                                          (year)       Maintaining representation in the                        its range.’’ The Act directs us to
                                                                                                    form of genetic diversity is important to                   determine whether any species is an
                                                 Benedict Spring ....................    100 (2016) the Barrens topminnow’s capacity to                         endangered species or a threatened
                                                 McMahan Creek ...................        10 (2017) adapt to environmental changes.
                                                 Marcum Spring .....................     132 (2015)
                                                                                                                                                                species because of one or more of the
                                                                                                    Ecological diversity, another measure of                    following factors affecting its continued
                                                 Short Spring ..........................  30 (2015)
                                                 Greenbrook Pond .................        91 (2015) species’ representation, is naturally low,                  existence: (A) The present or threatened
                                                                                                    as the Barrens topminnow has always                         destruction, modification, or
                                                 Species Needs                                      been restricted to spring habitats in a                     curtailment of its habitat or range; (B)
                                                                                                    single physiographic province. Based on                     overutilization for commercial,
                                                    In this section, we describe the needs          mitochondrial DNA, genetic variation of                     recreational, scientific, or educational
                                                 of the species at the individual,                  extant populations is extremely low,                        purposes; (C) disease or predation; (D)
                                                 population, and species level. We                  and there are fixed differences between                     the inadequacy of existing regulatory
                                                 describe the Barrens topminnow’s                   the Caney Fork system populations and                       mechanisms; or (E) other natural or
                                                 viability needs in terms of resiliency             the Elk River system population (Hurt et                    manmade factors affecting its continued
                                                 (ability of the populations to withstand           al. 2017, pp. 1, 5), which is from Pond                     existence.
                                                 stochastic events), redundancy (ability            Spring and is represented now only by                          These factors represent broad
                                                 of the species to withstand large-scale,           individuals held in captivity. The                          categories of natural or human-caused
                                                 catastrophic events), and representation captive Elk River population, for which                               actions or conditions that could have an
                                                 (the ability of the species to adapt to            there are two identified mitochondrial                      effect on a species’ continued existence.
                                                 changing environmental conditions). In             DNA haplotypes unique from the third                        In evaluating these actions and
                                                 later sections, using various time frames haplotype present in all Caney Fork                                  conditions, we look for those that may
                                                 and the current and projected resiliency, system sampled fish, should be                                       have a negative effect on individuals of
                                                 redundancy, and representation, we will considered an evolutionary significant                                 the species, as well as for those that may
                                                 describe the species’ viability over time. unit (ESU) (Hurt et al. 2017, p. 5), a                              ameliorate any negative effects and
                                                    Barrens topminnows need                         historically isolated population that is                    those that may have positive effects.
                                                 filamentous algae or other submerged               on an independent evolutionary                                 We use the term ‘‘threat’’ to refer in
                                                 vegetation for egg deposition and cover, trajectory (Moritz 1994, p. 373).                                     general to actions or conditions that are
                                                 and consistently cool water ranging                Accordingly, reestablishing the captive                     known to or are reasonably likely to
                                                 from 15 to 25 °C (59 to 77 °F) that is             Elk River population in the wild will be                    negatively affect individuals of a
                                                 sufficiently clear for mating display              important to increasing genetic                             species. The term ‘‘threat’’ includes
                                                 (Rakes, 1989, entire). For feeding, they           representation and species’ viability.                      actions or conditions that have a direct
                                                 need microcrustaceans and immature                                                                             impact on individuals (direct impacts),
                                                 aquatic insect larvae (Rakes 1989, pp.             Redundancy                                                  as well as those that affect individuals
                                                 18–25). At the larval and juvenile stage,             Finally, the Barrens topminnow needs                     through alteration of their habitat or
                                                 it is essential that predation rates and           to have multiple resilient populations                      required resources (stressors). A threat
                                                 competition from other fishes is low               distributed throughout its range to                         may encompass—either together or
                                                 (Laha and Mattingly 2006, pp. 1, 6–10).            provide redundancy, the ability of the                      separately—the source of the action or
                                                 Resiliency                                         species to withstand catastrophic                           condition, or the action or condition
                                                                                                    events. The more populations, and the                       itself.
                                                    For the Barrens topminnow to                    wider the distribution of those                                However, the mere identification of
                                                 maintain viability, its populations or             populations, the more redundancy the                        any threat(s) does not necessarily mean
                                                 some portion thereof must be resilient.            species will exhibit. Redundancy                            that the species meets the statutory
                                                 Stochastic events that affect resiliency           reduces the risk that a large portion of                    definition of an ‘‘endangered species’’ or
                                                 are reasonably likely to occur                     the species’ range will be negatively                       a ‘‘threatened species.’’ In determining
                                                 infrequently, but are of a magnitude that affected by a catastrophic natural or                                whether a species meets either
                                                 can drastically alter the ecosystem                anthropogenic event at a given point in                     definition, we must evaluate all
                                                 where they happen. Classic examples of time. Species that are well-distributed                                 identified threats by considering the
                                                 stochastic events include drought, major across their historical range are                                     expected response by the species, and
                                                 storms (hurricanes), fire, and landslides considered less susceptible to extinction                            the effects of the threats—in light of
                                                 (Chapin et al. 2002, pp. 285–288). To be and have higher viability than species                                those actions and conditions that will
                                                 resilient to stochastic events                     confined to a small portion of their                        ameliorate the threats—on an
                                                 populations of Barrens topminnow need range (Carroll et al. 2010, entire;                                      individual, population, and species
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                                                 to be sufficiently abundant, with several Redford et al. 2011, entire).                                        level. We evaluate each threat and its
                                                 hundred individuals (Service 2017, p.                                                                          expected effects on the species, then
                                                 11) represented by adult and juvenile              Summary of Biological Status and                            analyze the cumulative effect of all of
                                                 age classes. The larger the range, or              Threats                                                     the threats on the species as a whole.
                                                 spatial extent, occupied by a Barrens                 Section 4 of the Act (16 U.S.C. 1533)                    We also consider the cumulative effect
                                                 topminnow population, the more                     and its implementing regulations (50                        of the threats in light of those actions
                                                 resilient the population will be to a              CFR part 424) set forth the procedures                      and conditions that will have positive
                                                 stochastic event. Additionally,                    for determining whether a species is an                     effects on the species—such as any


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                                                 494                     Federal Register / Vol. 83, No. 3 / Thursday, January 4, 2018 / Proposed Rules

                                                 existing regulatory mechanisms or                       causing recruitment failure such that                  topminnow. Without these efforts it is
                                                 conservation efforts. It is only after                  only the adult age class remains after a               likely the species would persist only at
                                                 conducting this cumulative analysis of                  spawning season (Goldsworthy and                       one site, McMahan Spring, which has
                                                 threats and the actions that may                        Bettoli 2006, p. 341; Laha and Mattingly               not gone dry during periods of drought
                                                 ameliorate them or have positive effects                2007, p. 9). Under most circumstances,                 and is not occupied by mosquitofish. In
                                                 on the species, and describing the                      extirpation of Barrens topminnows                      2001, the Barrens Topminnow Working
                                                 expected effect on the species now and                  occurs within 3 to 5 years of                          Group, consisting of the Tennessee
                                                 in the foreseeable future, that the                     mosquitofish invading a site (Service                  Wildlife Resources Agency, the Service,
                                                 Secretary can determine whether the                     2017, p. 32). The five extant Barrens                  universities, and nonprofit
                                                 species meets the definition of an                      topminnow populations are at sites free                organizations, was created to coordinate
                                                 ‘‘endangered species’’ or a ‘‘threatened                of mosquitofish.                                       actions such as habitat improvement,
                                                 species.’’ We completed a                                  As a consequence of the western                     propagation, and reintroduction of the
                                                 comprehensive assessment of the                         mosquitofish invasion, the habitat                     species in the wild. Since the initiation
                                                 biological status of the Barrens                        available to the Barrens topminnow, and                of the stocking program, more than
                                                 topminnow, and prepared a report of                     the species’ range, has been curtailed                 44,000 Barrens topminnows have been
                                                 the assessment which provides a                         (Factor A). Historically, Barrens                      reintroduced in 27 sites deemed to have
                                                 thorough account of the species’ overall                topminnow populations were likely                      appropriate habitat. Brood fish were
                                                 viability and evaluates the cumulative                  connected by floods and high flow                      taken from McMahan Creek and
                                                 effects of the five listing factors (Service            events that washed individuals                         Benedict Spring in the Caney Fork
                                                 2017, entire).                                          downstream or provided temporary                       watershed, and Pond Spring in the Elk
                                                                                                         connections across local stream divides.               River watershed. Reintroduction was
                                                 Risk Factors                                            Most, if not all, pathways via flood-                  unsuccessful at most of these sites,
                                                    In the SSA, we assessed the potential                facilitated migration are no longer viable             either because of insufficient or
                                                 risk factors (i.e., threats, stressors) that            owing to the presence of mosquitofish.                 marginal habitat or the invasion of
                                                 could be affecting the Barrens                          Many of the sites where the topminnow                  mosquitofish (Goldsworth and Bettoli
                                                 topminnow now and in the future. In                     is extirpated currently have sufficient                2005, entire). At the 2016 Working
                                                 this proposed rule, we will discuss only                habitat quality to support populations                 Group meeting, the decision was made
                                                 those factors in detail that could                      (Kuhajda et al. 2014, entire; Kuhajda                  to stop the stocking program because it
                                                 meaningfully impact the status of the                   2017, entire). Thus, it is the presence of             was no longer needed to maintain
                                                 species. Those risks that are not known                 mosquitofish rather than habitat that is               populations at suitable sites that lack
                                                 to have effects on Barrens topminnow                    limiting Barrens topminnow                             mosquitofish, and at other sites,
                                                 populations, such as collection and                     populations because mosquitofish                       continued stocking was unlikely to
                                                 disease, are not discussed here.                        prevent topminnows from colonizing
                                                    The primary risk factor affecting the                                                                       establish self-sustaining populations.
                                                                                                         previously occupied springs in their
                                                 status of the Barrens topminnow is                                                                                One of the stocked sites, Vervilla
                                                                                                         range. This reduction in connectivity
                                                 western mosquitofish (Gambusia                                                                                 Spring, was situated in the Caney Fork
                                                                                                         contributes to reduced gene flow, which
                                                 affinis), a species invasive to the Barrens                                                                    watershed on land opportunistically
                                                                                                         in turn reduces genetic diversity and
                                                 Plateau that preys on young                                                                                    purchased by the Service for Barrens
                                                                                                         species’ representation. Additionally,
                                                 topminnows, harasses older individuals,                                                                        topminnow reintroduction. When the
                                                                                                         the lost connectivity contributes to the
                                                 and may compete with adults for space                   diminished range (number of occupied                   land came under the management of
                                                 and food (Factor C).                                    sites), which has caused a reduction in                Tennessee National Wildlife Refuge,
                                                    Western mosquitofish are native to                   species’ redundancy.                                   mosquitofish were present in the spring
                                                 Tennessee, but their range within the                      Reduced habitat availability has                    on the property and topminnows were
                                                 State was most likely confined to the                   exacerbated the threat of drought (Factor              not. To improve habitat for topminnows
                                                 Coastal Plain province (Etnier and                      E), which has greatest effect on one of                at the site, spring pools were deepened,
                                                 Starnes 1993, p. 373), and they are not                 the two remaining native populations, at               a concrete low water barrier was
                                                 native to the Barrens Plateau. In many                  Benedict Spring. Approximately once                    installed, and the mosquitofish removed
                                                 parts of North America, western                         every 5 years, drought results in                      with a piscicide. Topminnows from
                                                 mosquitofish were stocked in attempt to                 Benedict Spring drying completely or                   Benedict Spring were then stocked
                                                 control mosquito larvae, which is                       nearly so, to the point that it can no                 above the barrier. This population was
                                                 presumably the means by which they                      longer support the Barrens topminnow.                  stocked in 2001, and maintained
                                                 were introduced to the Barrens Plateau                  In these years, all topminnows are                     viability until 2010, when mosquitofish
                                                 in the mid twentieth century. Although                  removed from Benedict Spring and                       reinvaded the spring during a flood. In
                                                 to the best of our knowledge                            placed in aquaria, where they are held                 2011, only adults were present, and by
                                                 mosquitofish stocking stopped shortly                   until water levels return. Under natural               2013, no Barrens topminnows remained
                                                 thereafter, the species has spread and                  (i.e., mosquitofish free) conditions,                  in Vervilla Spring.
                                                 become a permanent inhabitant                           drought would not be a concern because                    From the late 1980s into the 2000s,
                                                 throughout most of the Barrens Plateau.                 Barrens topminnows would recolonize                    the Service’s Partners for Fish and
                                                 Mosquitofish are well adapted to spread                 areas in wetter years; however, due to                 Wildlife program worked with
                                                 in habitats where they are introduced                   the widespread reduction in suitable                   landowners to exclude livestock from
                                                 because they reproduce rapidly,                         habitat due to mosquitofish and the                    the springs and spring runs where
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                                                 spawning three to four cohorts per year                 resulting small number of remaining                    Barrens topminnows occurred in an
                                                 of a few to a hundred or more                           populations, the loss of any population                effort to curb sedimentation. None of
                                                 individuals (Etnier and Starnes 1993, p.                is a concern.                                          these Partners agreements is currently
                                                 373). They can move through very                                                                               active. However, there are still buffers
                                                 shallow water and have invaded sites                    Conservation Actions and Regulatory                    that exclude livestock from topminnow
                                                 connected by temporarily wetted areas                   Mechanisms                                             habitat in place at some sites, many
                                                 created by floods. Mosquitofish prey on                   There have been many targeted efforts                which have since been invaded by
                                                 young topminnows and harass adults,                     since circa 1980 to conserve the Barrens               mosquitofish.


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                                                                         Federal Register / Vol. 83, No. 3 / Thursday, January 4, 2018 / Proposed Rules                                               495

                                                 Current Condition                                       the current risk factors continuing on                 mosquitofish (Factor C), drought, and
                                                    As discussed above, only five                        the same trajectory that they are on now.              small population size (Factor E) acting
                                                 remaining populations of Barrens                        We also evaluated a best case scenario,                in combination to reduce the overall
                                                 topminnow remain (see Table 1, above),                  under which management actions to                      viability of the species. The risk of
                                                 in contrast to at least 18 identified                   exclude mosquitofish and reintroduce                   extinction is high because the remaining
                                                 historical populations (occupied sites)                 populations would occur. Finally, we                   populations have a high risk of
                                                 and likely several more that were                       evaluated a worst case scenario, under                 extirpation, are isolated, and have no
                                                 extirpated without having been first                    which no management actions would be                   potential for recolonization without
                                                 identified. Thus, there has been at least               applied and climate change would                       intervening management actions.
                                                                                                         increase the frequency and magnitude of                Therefore, on the basis of the best
                                                 a 72 percent reduction in the number of
                                                                                                         droughts and floods. Regarding the                     available scientific and commercial
                                                 populations in the wild. Furthermore,
                                                                                                         likelihood of each scenario transpiring,               information, we propose listing the
                                                 the number of native populations has
                                                                                                         in the near future (3- to 5-year time                  Barrens topminnow as endangered in
                                                 been reduced by at least 89 percent. The
                                                                                                         frame), the status quo scenario was                    accordance with sections 3(6) and
                                                 only population known to be native in
                                                                                                         predicted to be ‘‘very likely’’ and best               4(a)(1) of the Act. We find that a
                                                 the Elk River watershed, from Pond
                                                                                                         case and worst case scenarios were                     threatened species status is not
                                                 Spring, is now maintained as a captive
                                                                                                         ‘‘unlikely.’’ For the SSA, the terms                   appropriate for the Barrens topminnow,
                                                 ‘‘ark population’’ at three facilities. In
                                                                                                         ‘‘very likely’’ and ‘‘unlikely’’ as they               as it is already in danger of extinction
                                                 the Duck River system, native
                                                                                                         apply to confidence are 70–90 percent                  throughout its range because of the
                                                 populations were extirpated by the late                 certain and 10–40 percent certain,                     currently contracted range (loss of 79
                                                 1960s (Etnier and Starnes 1993, p. 366),                respectively (IPCC 2014, p. 2). In 20 to               percent of occupied sites), because the
                                                 and if there was any genetic component                  30 years, the time frame constituting the              threats are occurring across the entire
                                                 unique to the Duck River system, it has                 extent of the foreseeable future, beyond               range of the species, and because the
                                                 been lost. The only two remaining                       which there is insufficient confidence in              threats are ongoing currently and are
                                                 native populations are at Benedict                      how threats will act, the best case                    expected to continue into the future.
                                                 Spring and McMahan Creek.                               scenario was predicted to be ‘‘unlikely’’                 Under the Act and our implementing
                                                    In summary, the current condition for                and the status quo and worst case                      regulations, a species may warrant
                                                 each of the conservation metrics of                     scenarios were ‘‘as likely as not,’’                   listing if it is endangered or threatened
                                                 resiliency, redundancy, and                             defined as having a 40–70 percent                      throughout all or a significant portion of
                                                 representation is low. Regarding                        certainty of occurrence (IPCC 2014, p.                 its range. Because we have determined
                                                 resiliency, four of the five extant                     2). Because we determined that the                     that the Barrens topminnow is
                                                 populations are of moderate size, likely                current condition of the Barrens                       endangered throughout all of its range,
                                                 with 100 individuals or more. The other                 topminnow was consistent with that of                  no portion of its range can be
                                                 population is smaller, although based                   an endangered species (see                             ‘‘significant’’ for purposes of the
                                                 on recent surveys it appears to be                      Determination, below), and that it is                  definitions of ‘‘endangered species’’ and
                                                 persisting and recruiting new cohorts                   very likely the current condition will                 ‘‘threatened species.’’ See the Final
                                                 each year. However, even if the number                  persist through the near future, we are                Policy on Interpretation of the Phrase
                                                 of individuals in each population is                    not presenting in any more detail how                  ‘‘Significant Portion of Its Range’’ in the
                                                 sufficient to maintain future                           each scenario would likely act on                      Endangered Species Act’s Definitions of
                                                 generations, all currently occupied sites               species viability. Please refer to the SSA             ‘‘Endangered Species’’ and ‘‘Threatened
                                                 are small and vulnerable to stochastic                  (Service 2017, pp. 32–42) for the full                 Species’’ (79 FR 37578; July 1, 2014).
                                                 events, so that a disturbance would                     analysis of future scenarios.
                                                 adversely affect a site and its whole                                                                          Available Conservation Measures
                                                 population equally. Regarding                           Determination                                            Conservation measures provided to
                                                 redundancy, at least 16 of 18 native                       Section 4 of the Act (16 U.S.C. 1533)               species listed as endangered or
                                                 populations (89 percent) have been lost,                and its implementing regulations (50                   threatened species under the Act
                                                 with only 5 populations remaining in                    CFR part 424) set forth the procedures                 include recognition, recovery actions,
                                                 the wild. Thus, the spatial distribution                for determining whether a species meets                requirements for Federal protection, and
                                                 of a naturally narrow-ranging endemic                   the definition of ‘‘endangered species’’               prohibitions against certain practices.
                                                 has become more concentrated, making                    or ‘‘threatened species.’’ The Act defines             Recognition through listing results in
                                                 the species more susceptible to a                       an endangered species as any species                   public awareness and conservation by
                                                 catastrophic event. Lastly,                             that is ‘‘in danger of extinction                      Federal, State, Tribal, and local
                                                 representation has been reduced and the                 throughout all or a significant portion of             agencies; private organizations; and
                                                 species’ adaptive capacity may be                       its range’’ and a threatened species as                individuals. The Act encourages
                                                 limited as there is little genetic variation            any species ‘‘that is likely to become                 cooperation with the States and other
                                                 between extant populations. Native                      endangered throughout all or a                         countries and calls for recovery actions
                                                 stock from the Elk River and Duck River                 significant portion of its range within                to be carried out for listed species. The
                                                 has been extirpated, although members                   the foreseeable future.’’ We have                      protection required by Federal agencies
                                                 of the Elk River population survive in                  carefully assessed the best scientific and             and the prohibitions against certain
                                                 captivity.                                              commercial information available and                   activities are discussed, in part, below.
                                                                                                         find that the Barrens topminnow is                       The primary purpose of the Act is the
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                                                 Future Condition                                        presently in danger of extinction                      conservation of endangered and
                                                   As part of the SSA, we developed                      throughout its entire range based on the               threatened species and the ecosystems
                                                 three future condition scenarios to                     severity and immediacy of threats                      upon which they depend. The ultimate
                                                 capture the range of uncertainties                      currently impacting the species.                       goal of such conservation efforts is the
                                                 regarding future threats and the                           The overall range of the Barrens                    recovery of these listed species, so that
                                                 projected responses by the Barrens                      topminnow has been significantly                       they no longer need the protective
                                                 topminnow. Our scenarios included a                     reduced (Factor A), and its remaining                  measures of the Act. Subsection 4(f) of
                                                 status quo scenario, which incorporated                 populations are threatened by                          the Act calls for the Service to develop


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                                                 496                     Federal Register / Vol. 83, No. 3 / Thursday, January 4, 2018 / Proposed Rules

                                                 and implement recovery plans for the                    including Federal budgets, State                       prohibitions and exceptions that apply
                                                 conservation of endangered and                          programs, and cost share grants for non-               to endangered wildlife. The prohibitions
                                                 threatened species. The recovery                        Federal landowners, the academic                       of section 9(a)(1) of the Act, codified at
                                                 planning process involves the                           community, and nongovernmental                         50 CFR 17.21, make it illegal for any
                                                 identification of actions that are                      organizations. In addition, pursuant to                person subject to the jurisdiction of the
                                                 necessary to halt or reverse the species’               section 6 of the Act, the State of                     United States to take (which includes
                                                 decline by addressing the threats to its                Tennessee would be eligible for Federal                harass, harm, pursue, hunt, shoot,
                                                 survival and recovery. The goal of this                 funds to implement management                          wound, kill, trap, capture, or collect; or
                                                 process is to restore listed species to a               actions that promote the protection or                 to attempt any of these) endangered
                                                 point where they are secure, self-                      recovery of the Barrens topminnow.                     wildlife within the United States or on
                                                 sustaining, and functioning components                  Information on our grant programs that                 the high seas. In addition, it is unlawful
                                                 of their ecosystems.                                    are available to aid species recovery can              to import; export; deliver, receive, carry,
                                                    Recovery planning includes the                       be found at: http://www.fws.gov/grants.                transport, or ship in interstate or foreign
                                                 development of a recovery outline when                     Although the Barrens topminnow is                   commerce in the course of commercial
                                                 a species is listed and preparation of a                only proposed for listing under the Act                activity; or sell or offer for sale in
                                                 draft and final recovery plan. The                      at this time, please let us know if you                interstate or foreign commerce any
                                                 recovery outline guides the immediate                   are interested in participating in                     listed species. It is also illegal to
                                                 implementation of urgent recovery                       recovery efforts for this species.                     possess, sell, deliver, carry, transport, or
                                                 actions and describes the process to be                 Additionally, we invite you to submit                  ship any such wildlife that has been
                                                 used to develop a recovery plan.                        any new information on this species                    taken illegally. Certain exceptions apply
                                                 Subsequently, a recovery plan identifies                whenever it becomes available and any                  to employees of the Service, the
                                                 recovery criteria for review of when a                  information you may have for recovery                  National Marine Fisheries Service, other
                                                 species may be ready for downlisting or                 planning purposes (see FOR FURTHER                     Federal land management agencies, and
                                                 delisting, and methods for monitoring                   INFORMATION CONTACT).                                  State conservation agencies.
                                                 recovery progress. Recovery plans also                     Section 7(a) of the Act requires                       We may issue permits to carry out
                                                 establish a framework for agencies to                   Federal agencies to evaluate their                     otherwise prohibited activities
                                                 coordinate their recovery efforts and                   actions with respect to any species that               involving endangered wildlife under
                                                 provide estimates of the cost of                        is proposed or listed as an endangered                 certain circumstances. Regulations
                                                 implementing recovery tasks. Recovery                   or threatened species and with respect                 governing permits are codified at 50
                                                 teams (composed of species experts,                     to its critical habitat, if any is                     CFR 17.22. With regard to endangered
                                                 Federal and State agencies,                             designated. Regulations implementing                   wildlife, a permit may be issued for the
                                                 nongovernmental organizations, and                      this interagency cooperation provision                 following purposes: For scientific
                                                 stakeholders) are often established to                  of the Act are codified at 50 CFR part                 purposes, to enhance the propagation or
                                                 develop recovery plans. Revisions of the                402. Section 7(a)(4) of the Act requires               survival of the species, and for
                                                 plan may be done to address continuing                  Federal agencies to confer with the                    incidental take in connection with
                                                 or new threats to the species, as new                   Service on any action that is likely to                otherwise lawful activities. There are
                                                 substantive information becomes                         jeopardize the continued existence of a                also certain statutory exemptions from
                                                 available. We intend to make a recovery                 species proposed for listing or result in              the prohibitions, which are found in
                                                 outline available to the public                         destruction or adverse modification of                 sections 9 and 10 of the Act.
                                                 concurrent with the final listing rule, if              proposed critical habitat. If a species is                It is our policy, as published in the
                                                 listing continues to be warranted. When                 listed subsequently, section 7(a)(2) of                Federal Register on July 1, 1994 (59 FR
                                                 completed, the recovery outline, draft                  the Act requires Federal agencies to                   34272), to identify to the maximum
                                                 recovery plan, and the final recovery                   ensure that activities they authorize,                 extent practicable at the time a species
                                                 plan will be available on our website                   fund, or carry out are not likely to                   is listed, those activities that would or
                                                 (http://www.fws.gov/endangered), or                     jeopardize the continued existence of                  would not constitute a violation of
                                                 from our Tennessee Ecological Services                  the species or destroy or adversely                    section 9 of the Act. The intent of this
                                                 Field Office (see FOR FURTHER                           modify its critical habitat. If a Federal              policy is to increase public awareness of
                                                 INFORMATION CONTACT).                                   action may affect a listed species or its              the effect of a proposed listing on
                                                    Implementation of recovery actions                   critical habitat, the responsible Federal              proposed and ongoing activities within
                                                 generally requires the participation of a               agency must enter into consultation                    the range of the species proposed for
                                                 broad range of partners, including other                with the Service.                                      listing. Based on the best available
                                                 Federal agencies, States, Tribes,                          Federal agency actions within the                   information, if we list this species, the
                                                 nongovernmental organizations,                          species’ habitat that may require                      following actions are unlikely to result
                                                 businesses, and private landowners.                     conference or consultation or both as                  in a violation of section 9, if these
                                                 Examples of recovery actions include                    described in the preceding paragraph                   activities are carried out in accordance
                                                 habitat restoration (e.g., restoration of               include issuance of section 404 Clean                  with existing regulations and permit
                                                 native vegetation), research, captive                   Water Act (33 U.S.C. 1251 et seq.)                     requirements; this list is not
                                                 propagation and reintroduction, and                     permits by the U.S. Army Corps of                      comprehensive:
                                                 outreach and education. The recovery of                 Engineers, construction and                               (1) Normal agricultural and
                                                 many listed species cannot be                           maintenance of roads or highways by                    silvicultural practices, including
                                                 accomplished solely on Federal lands                    the Federal Highway Administration,                    herbicide and pesticide use, which are
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                                                 because their ranges may occur                          construction and maintenance of utility                carried out in accordance with any
                                                 primarily or solely on non-Federal                      corridors by the Tennessee Valley                      existing regulations, permit and label
                                                 lands. To achieve recovery of these                     Authority, and construction and                        requirements, and best management
                                                 species requires cooperative                            maintenance of natural gas or oil                      practices; and
                                                 conservation efforts on private, State,                 pipeline corridors by the Federal Energy                  (2) Normal residential landscape
                                                 and Tribal lands. If this species is listed,            Regulatory Commission.                                 activities.
                                                 funding for recovery actions will be                       The Act and its implementing                           Based on the best available
                                                 available from a variety of sources,                    regulations set forth a series of general              information, if we list this species, the


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                                                                         Federal Register / Vol. 83, No. 3 / Thursday, January 4, 2018 / Proposed Rules                                               497

                                                 following activities may potentially                    that any action they authorize, fund, or               critical habitat would not be beneficial
                                                 result in a violation of section 9 of the               carry out is not likely to result in the               to the species.
                                                 Act; this list is not comprehensive:                    destruction or adverse modification of                    As discussed above and in the SSA,
                                                    (1) Intentional release of mosquitofish              critical habitat. The designation of                   there is currently no imminent threat to
                                                 into occupied Barrens topminnow                         critical habitat does not affect land                  the Barrens topminnow of take
                                                 habitat;                                                ownership or establish a refuge,                       attributed to collection or vandalism
                                                    (2) Unauthorized handling or                         wilderness, reserve, preserve, or other                (Factor B), and identification and
                                                 collecting of the species;                              conservation area. Such designation                    mapping of critical habitat would not
                                                    (3) Modification of the water flow of                does not allow the government or public                likely to increase any such threat. In the
                                                 any spring or stream in which the                       to access private lands. Such                          absence of finding that the designation
                                                 Barrens topminnow is known to occur;                    designation does not require                           of critical habitat would increase threats
                                                    (4) Direct or indirect destruction of                implementation of restoration, recovery,               to a species, if there are any benefits to
                                                 stream habitat; and                                     or enhancement measures by non-                        a critical habitat designation, then a
                                                    (5) Discharge of chemicals or fill                   Federal landowners. Where a landowner                  prudent finding is warranted. The
                                                 material into any waters in which the                   requests Federal agency funding or                     potential benefits of designation
                                                 Barrens topminnow is known to occur.                    authorization for an action that may                   include: (1) Triggering consultation
                                                    Questions regarding whether specific                 affect a listed species or critical habitat,           under section 7 of the Act in new areas
                                                 activities would constitute a violation of              the consultation requirements of section               for actions in which there may be a
                                                 section 9 of the Act should be directed                 7(a)(2) of the Act would apply, but even               Federal nexus where it would not
                                                 to the Tennessee Ecological Services                    in the event of a destruction or adverse               otherwise occur because, for example, it
                                                 Field Office (see FOR FURTHER                           modification finding, the obligation of                is or has become unoccupied or the
                                                 INFORMATION CONTACT).                                   the Federal action agency and the                      occupancy is in question; (2) focusing
                                                                                                         landowner is not to restore or recover                 conservation activities on the most
                                                 Critical Habitat                                                                                               essential features and areas; (3)
                                                                                                         the species, but to implement
                                                 Background                                              reasonable and prudent alternatives to                 providing educational benefits to State
                                                                                                         avoid destruction or adverse                           or county governments or private
                                                    Critical habitat is defined in section 3                                                                    entities; and (4) preventing people from
                                                 of the Act as:                                          modification of critical habitat.
                                                                                                                                                                causing inadvertent harm to the species.
                                                    (1) The specific areas within the                       Section 4 of the Act requires that we
                                                                                                                                                                Therefore, because we have determined
                                                 geographical area occupied by the                       designate critical habitat on the basis of
                                                                                                                                                                that the designation of critical habitat
                                                 species, at the time it is listed in                    the best scientific data available.
                                                                                                                                                                will not likely increase the degree of
                                                 accordance with the Act, on which are                   Further, our Policy on Information
                                                                                                                                                                threat to these species and may provide
                                                 found those physical or biological                      Standards Under the Endangered
                                                                                                                                                                some measure of benefit, we find that
                                                 features:                                               Species Act (published in the Federal                  designation of critical habitat is prudent
                                                    (a) Essential to the conservation of the             Register on July 1, 1994 (59 FR 34271)),               for the Barrens topminnow.
                                                 species, and                                            the Information Quality Act (section 515
                                                    (b) Which may require special                        of the Treasury and General                            Critical Habitat Determinability
                                                 management considerations or                            Government Appropriations Act for                         Having determined that designation is
                                                 protection; and                                         Fiscal Year 2001 (Pub. L. 106–554; H.R.                prudent, under section 4(a)(3) of the Act
                                                    (2) Specific areas outside the                       5658), and our associated Information                  we must find whether critical habitat for
                                                 geographical area occupied by the                       Quality Guidelines, provide criteria,                  the species is determinable. Our
                                                 species at the time it is listed, upon a                establish procedures, and provide                      regulations at 50 CFR 424.12(a)(2) state
                                                 determination that such areas are                       guidance to ensure that our decisions                  that critical habitat is not determinable
                                                 essential for the conservation of the                   are based on the best scientific data                  when one or both of the following
                                                 species.                                                available. They require our biologists, to             situations exist: (1) Information
                                                    Conservation, as defined under                       the extent consistent with the Act and                 sufficient to perform required analyses
                                                 section 3 of the Act, means to use and                  with the use of the best scientific data               of the impacts of the designation is
                                                 the use of all methods and procedures                   available, to use primary and original                 lacking, or (2) The biological needs of
                                                 that are necessary to bring an                          sources of information as the basis for                the species are not sufficiently well
                                                 endangered or threatened species to the                 recommendations to designate critical                  known to permit identification of an
                                                 point at which the measures provided                    habitat.                                               area as critical habitat. As discussed
                                                 pursuant to the Act are no longer                       Prudency Determination                                 above, we have reviewed the available
                                                 necessary.                                                                                                     information pertaining to the biological
                                                    Such methods and procedures                            Section 4(a)(3) of the Act, as                       needs of this species and the habitat
                                                 include, but are not limited to, all                    amended, and implementing regulations                  characteristics where this species is
                                                 activities associated with scientific                   (50 CFR 424.12), require that, to the                  located. However, a careful assessment
                                                 resources management such as research,                  maximum extent prudent and                             of the economic impacts that may occur
                                                 census, law enforcement, habitat                        determinable, the Secretary designate                  due to a critical habitat designation is
                                                 acquisition and maintenance,                            critical habitat at the time the species is            ongoing, and we are in the process of
                                                 propagation, live trapping, and                         determined to be endangered or                         working with the States and other
                                                 transplantation, and, in the                            threatened. Our regulations (50 CFR                    partners in acquiring the complex
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                                                 extraordinary case where population                     424.12(a)(1)) state that the designation               information needed to perform that
                                                 pressures within a given ecosystem                      of critical habitat is not prudent when                assessment. Until these efforts are
                                                 cannot be otherwise relieved, may                       one or both of the following situations                complete, information sufficient to
                                                 include regulated taking.                               exist: (1) The species is threatened by                perform a required analysis of the
                                                    Critical habitat receives protection                 taking or other human activity, and                    impacts of the designation is lacking,
                                                 under section 7 of the Act through the                  identification of critical habitat can be              and, therefore, we find designation of
                                                 requirement that Federal agencies                       expected to increase the degree of threat              critical habitat for this species to be not
                                                 ensure, in consultation with the Service,               to the species, or (2) such designation of             determinable at this time. However, we


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                                                 498                      Federal Register / Vol. 83, No. 3 / Thursday, January 4, 2018 / Proposed Rules

                                                 expect to have the necessary                                long, the sections where you feel lists or                   List of Subjects in 50 CFR Part 17
                                                 information, and publish a proposed                         tables would be useful, etc.
                                                 rule in the Federal Register, in the near                                                                                  Endangered and threatened species,
                                                                                                             National Environmental Policy Act (42                        Exports, Imports, Reporting and
                                                 future.
                                                                                                             U.S.C. 4321 et seq.)                                         recordkeeping requirements,
                                                 Required Determinations                                       We have determined that                                    Transportation.
                                                 Clarity of the Rule                                         environmental assessments and
                                                                                                             environmental impact statements, as                          Proposed Regulation Promulgation
                                                    We are required by Executive Orders                      defined under the authority of the
                                                 12866 and 12988 and by the                                                                                                 Accordingly, we propose to amend
                                                                                                             National Environmental Policy Act,                           part 17, subchapter B of chapter I, title
                                                 Presidential Memorandum of June 1,                          need not be prepared in connection
                                                 1998, to write all rules in plain                                                                                        50 of the Code of Federal Regulations,
                                                                                                             with listing a species as an endangered
                                                 language. This means that each rule we                                                                                   as set forth below:
                                                                                                             or threatened species under the
                                                 publish must:                                               Endangered Species Act. We published                         PART 17—ENDANGERED AND
                                                    (1) Be logically organized;                              a notice outlining our reasons for this                      THREATENED WILDLIFE AND PLANTS
                                                    (2) Use the active voice to address                      determination in the Federal Register
                                                 readers directly;                                           on October 25, 1983 (48 FR 49244).
                                                                                                                                                                          ■ 1. The authority citation for part 17
                                                    (3) Use clear language rather than                       References Cited                                             continues to read as follows:
                                                 jargon;
                                                                                                               A complete list of references cited is                       Authority: 16 U.S.C. 1361–1407; 1531–
                                                    (4) Be divided into short sections and                   available in Appendix A of the SSA
                                                 sentences; and                                                                                                           1544; and 4201–4245, unless otherwise
                                                                                                             (Service 2017. Species Status                                noted.
                                                    (5) Use lists and tables wherever                        Assessment Report for the Barrens
                                                 possible.                                                                                                                ■ 2. Amend § 17.11(h) by adding an
                                                                                                             Topminnow (Fundulus julisia), Version
                                                    If you feel that we have not met these                                                                                entry for ‘‘Topminnow, Barrens’’ to the
                                                                                                             1.0. Cookeville, TN), available online at
                                                 requirements, send us comments by one                                                                                    List of Endangered and Threatened
                                                                                                             http://www.regulations.gov under
                                                 of the methods listed in ADDRESSES. To                      Docket No. FWS–R4–ES–2017–0094.                              Wildlife in alphabetical order under
                                                 better help us revise the rule, your                                                                                     FISHES to read as follows:
                                                 comments should be as specific as                           Authors
                                                                                                                                                                          § 17.11 Endangered and threatened
                                                 possible. For example, you should tell                        The primary authors of this proposed                       wildlife.
                                                 us the numbers of the sections or                           rule are the staff members of the
                                                 paragraphs that are unclearly written,                      Tennessee Ecological Services Field                          *       *    *       *       *
                                                 which sections or sentences are too                         Office.                                                          (h) * * *

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


                                                           *                       *                           *                           *                        *                      *                       *
                                                               FISHES

                                                         *                        *                        *                             *                       *                          *                    *
                                                 Topminnow, Barrens .................     Fundulus julisia .........................   Wherever found ........................     E       [Insert Federal Register cita-
                                                                                                                                                                                              tion when published as a final
                                                                                                                                                                                              rule]

                                                           *                       *                           *                           *                        *                      *                       *


                                                   Dated: December 3, 2017.
                                                 James W. Kurth,
                                                 Deputy Director for U.S. Fish and Wildlife
                                                 Service, Exercising the Authority of the
                                                 Director for U.S. Fish and Wildlife Service.
                                                 [FR Doc. 2017–28491 Filed 1–3–18; 8:45 am]
                                                 BILLING CODE 4333–15–P
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Document Created: 2018-01-04 02:02:06
Document Modified: 2018-01-04 02:02:06
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 accept comments received or postmarked on or before March 5, 2018. Comments submitted electronically using the Federal
ContactMary Jennings, U.S. Fish and Wildlife Service, Tennessee Ecological Services Field Office, 446 Neal Street, Cookeville, TN 38506; telephone 931-528-6481. Persons who use a telecommunications device for the deaf (TDD) may call the Federal Relay Service at 800-877-8339.
FR Citation83 FR 490 
RIN Number1018-BC52
CFR AssociatedEndangered and Threatened Species; Exports; Imports; Reporting and Recordkeeping Requirements and Transportation

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