Endangered and Threatened Wildlife; 90-Day Finding on a Petition To List the Dwarf Seahorse as Threatened or Endangered Under the Endangered Species Act, 26478-26486 [2012-10845]
Download as PDF
26478
Federal Register / Vol. 77, No. 87 / Friday, May 4, 2012 / Proposed Rules
erowe on DSK2VPTVN1PROD with PROPOSALS-1
ii. Follow directions. The Agency may
ask you to respond to specific questions
or organize comments by referencing a
Code of Federal Regulations (CFR) part
or section number.
iii. Explain why you agree or disagree;
suggest alternatives and substitute
language for your requested changes.
iv. Describe any assumptions and
provide any technical information and/
or data that you used.
v. If you estimate potential costs or
burdens, explain how you arrived at
your estimate in sufficient detail to
allow for it to be reproduced.
vi. Provide specific examples to
illustrate your concerns and suggest
alternatives.
vii. Explain your views as clearly as
possible, avoiding the use of profanity
or personal threats.
viii. Make sure to submit your
comments by the comment period
deadline identified.
3. Environmental justice. EPA seeks to
achieve environmental justice, the fair
treatment and meaningful involvement
of any group, including minority and/or
low-income populations, in the
development, implementation, and
enforcement of environmental laws,
regulations, and policies. To help
address potential environmental justice
issues, the Agency seeks information on
any groups or segments of the
population who, as a result of their
location, cultural practices, or other
factors, may have atypical or
disproportionately high and adverse
human health impacts or environmental
effects from exposure to the pesticides
discussed in this document, compared
to the general population.
II. What action is the agency taking?
EPA is announcing receipt of a
pesticide petition filed under section
408 of the Federal Food, Drug, and
Cosmetic Act (FFDCA), 21 U.S.C. 346a,
requesting the establishment or
modification of regulations in 40 CFR
part 174 or part 180 for residues of
pesticide chemicals in or on various
food commodities. The Agency is taking
public comment on the request before
responding to the petitioner. EPA is not
proposing any particular action at this
time. EPA has determined that the
pesticide petition described in this
document contains data or information
prescribed in FFDCA section 408(d)(2);
however, EPA has not fully evaluated
the sufficiency of the submitted data at
this time or whether the data supports
granting of the pesticide petition. After
considering the public comments, EPA
intends to evaluate whether and what
action may be warranted. Additional
data may be needed before EPA can
VerDate Mar<15>2010
15:04 May 03, 2012
Jkt 226001
make a final determination on this
pesticide petition.
Pursuant to 40 CFR 180.7(f), a
summary of the petition that is the
subject of this document, prepared by
the petitioner, is included in a docket
EPA has created for this rulemaking.
The docket for this petition is available
online at https://www.regulations.gov.
As specified in FFDCA section
408(d)(3), (21 U.S.C. 346a(d)(3)), EPA is
publishing notice of the petition so that
the public has an opportunity to
comment on this request for the
establishment or modification of
regulations for residues of pesticides in
or on food commodities. Further
information on the petition may be
obtained through the petition summary
referenced in this unit.
EPA is providing a shortened
comment period of 10 days on this
notice of filing. EPA is expediting this
petition because the time limited
tolerances for 2,6-DIPN and its
metabolites and degradates is set expire
on May 18, 2012.
PP 9F7626. Loveland Products, Inc.,
7251 W. 4th St., Greeley, CO 80634,
requests that 40 CFR 180.590 be
amended by extending the effective
dates of existing time-limited tolerances
for residues of the biochemical
pesticide, 2,6-diisopropylnaphthalene
(2,6-DIPN) and its metabolites and
degradates resulting from post harvest
applications, in or on the following food
and edible livestock commodities for
three years: Potato, whole at 2.0 parts
per million (ppm); potato peel at 6.0
ppm; potato, granules/flakes at 5.5 ppm;
cattle, goat, hog, horse, sheep, fat at 1.0
ppm; cattle, goat, hog, horse, sheep,
liver at 0.5 ppm; cattle, goat, hog, horse,
sheep, meat at 0.2 ppm; cattle, goat, hog,
horse, sheep, meat byproducts at 0.4
ppm; and milk, fat at 0.5 ppm. The
High-performance Liquid
Chromatograph (HPLC) is used to
measure and evaluate the chemical 2,6diisopropylnaphthalene (2,6-DIPN).
List of Subjects
Environmental protection,
Agricultural commodities, Feed
additives, Food additives, Pesticides
and pests, Reporting and recordkeeping
requirements.
Dated: April 26, 2012.
Keith A. Matthews,
Acting Director, Biopesticides and Pollution
Prevention Division, Office of Pesticide
Programs.
[FR Doc. 2012–10721 Filed 5–3–12; 8:45 am]
BILLING CODE 6560–50–P
PO 00000
Frm 00005
Fmt 4702
Sfmt 4702
DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric
Administration
50 CFR Parts 223 and 224
[Docket No. 120417006–1018–01]
RIN 0648–XA496
Endangered and Threatened Wildlife;
90-Day Finding on a Petition To List
the Dwarf Seahorse as Threatened or
Endangered Under the Endangered
Species Act
National Marine Fisheries
Service (NMFS), National Oceanic and
Atmospheric Administration (NOAA),
Department of Commerce.
ACTION: Ninety-day petition finding,
request for information, and initiation of
status review.
AGENCY:
We, NMFS, announce a 90day finding on a petition to list the
dwarf seahorse (Hippocampus zosterae)
as threatened or endangered and
designate critical habitat under the
Endangered Species Act (ESA). We find
that the petition and information in our
files present substantial scientific or
commercial information indicating that
the petitioned actions may be
warranted. We will conduct a status
review of the species to determine if the
petitioned action is warranted. To
ensure that the status review is
comprehensive, we are soliciting
scientific and commercial information
regarding this species (see below).
DATES: Information and comments on
the subject action must be received by
July 3, 2012.
ADDRESSES: You may submit comments,
identified by the code NOAA–NMFS–
2012–0101, addressed to: Calusa Horn,
Natural Resource Specialist, by any of
the following methods:
• Electronic Submissions: Submit all
electronic comments via the Federal
eRulemaking Portal https://
www.regulations.gov
• Facsimile (fax): 727–824–5309.
• Mail: NMFS, Southeast Regional
Office, 263 13th Avenue South, St.
Petersburg, FL 33701.
• Hand delivery: You may hand
deliver written comments to our office
during normal business hours at the
street address given above.
Instructions: All comments received
are a part of the public record and may
be posted to https://www.regulations.gov
without change. All personally
identifiable information (for example,
name, address, etc.) voluntarily
submitted by the commenter may be
publicly accessible. Do not submit
SUMMARY:
E:\FR\FM\04MYP1.SGM
04MYP1
Federal Register / Vol. 77, No. 87 / Friday, May 4, 2012 / Proposed Rules
confidential business information or
otherwise sensitive or protected
information. We will accept anonymous
comments. Attachments to electronic
comments will be accepted in Microsoft
Word, Excel, Corel WordPerfect, or
Adobe PDF file formats only.
FOR FURTHER INFORMATION CONTACT:
Calusa Horn, NMFS, Southeast Region,
(727) 824–5312; or Dwayne Meadows,
NMFS, Office of Protected Resources,
(301) 427–8403.
SUPPLEMENTARY INFORMATION:
Background
On April 7, 2010, we received a
petition from the Center for Biological
Diversity to list the dwarf seahorse
(Hippocampus zosterae) as threatened
or endangered under the ESA. The
petitioner also requested that critical
habitat be designated. The petition
states that the species is declining and
threatened with extinction due to loss or
curtailment of seagrass habitat and
range, overutilization resulting from
commercial seahorse collection,
inadequacy of existing regulatory
mechanisms, vulnerable life-history
parameters, noise, bycatch mortality,
illegal fishing, invasive species, and
tropical storms and hurricanes. Copies
of this petition are available from us (see
ADDRESSES, above) or at https://
sero.nmfs.noaa.gov/pr/
ListingPetitions.htm.
erowe on DSK2VPTVN1PROD with PROPOSALS-1
ESA Statutory and Regulatory
Provisions and Evaluation Framework
Section 4(b)(3)(A) of the ESA of 1973,
as amended (U.S.C. 1531 et seq.),
requires, to the maximum extent
practicable, that within 90 days of
receipt of a petition to list a species as
threatened or endangered, the Secretary
of Commerce make a finding on whether
that petition presents substantial
scientific or commercial information
indicating that the petitioned action
may be warranted, and to promptly
publish such finding in the Federal
Register (16 U.S.C. 1533(b)(3)(A)). When
substantial scientific or commercial
information in a petition indicates the
petitioned action may be warranted (a
‘‘positive 90-day finding’’), we are
required to promptly commence a
review of the status of the species
concerned during which we will
conduct a comprehensive review of the
best available scientific and commercial
information. In such cases, within 12
months of receipt of the petition, we
shall conclude the review with a finding
as to whether, in fact, the petitioned
action is warranted. Because the finding
at the 12-month stage is based on a more
thorough review of the available
VerDate Mar<15>2010
15:04 May 03, 2012
Jkt 226001
information, as compared to the narrow
scope of review at the 90-day stage, a
‘‘may be warranted’’ finding does not
prejudge the outcome of the status
review.
Under the ESA, a listing
determination may address a ‘‘species,’’
which is defined to also include
subspecies and, for any vertebrate
species, any distinct population
segment (DPS) that interbreeds when
mature (16 U.S.C. 1532(16)). A joint
NMFS–U.S. Fish and Wildlife Service
(USFWS) policy clarifies the agencies’
interpretation of the phrase ‘‘distinct
population segment’’ for the purposes of
listing, delisting, and reclassifying a
species under the ESA (61 FR 4722;
February 7, 1996). A species,
subspecies, or DPS is ‘‘endangered’’ if it
is in danger of extinction throughout all
or a significant portion of its range, and
‘‘threatened’’ if it is likely to become
endangered within the foreseeable
future throughout all or a significant
portion of its range (ESA sections 3(6)
and 3(20), respectively, 16 U.S.C.
1532(6) and (20)). Pursuant to the ESA
and our implementing regulations, we
determine whether species are
threatened or endangered because of
any one or a combination of the
following five section 4(a)(1) factors: (1)
The present or threatened destruction,
modification, or curtailment of habitat
or range; (2) overutilization for
commercial, recreational, scientific, or
educational purposes; (3) disease or
predation; (4) inadequacy of existing
regulatory mechanisms; and (5) any
other natural or manmade factors
affecting the species’ existence (16
U.S.C. 1533(a)(1), 50 CFR 424.11(c)).
ESA-implementing regulations issued
jointly by us and the USFWS (50 CFR
424.14(b)) define ‘‘substantial
information’’ in the context of reviewing
a petition to list, delist, or reclassify a
species, as the amount of information
that would lead a reasonable person to
believe that the measure proposed in the
petition may be warranted. In evaluating
whether substantial information is
contained in a petition, the Secretary
must consider whether the petition: (1)
Clearly indicates the administrative
measure recommended and gives the
scientific and any common name of the
species involved; (2) contains detailed
narrative justification for the
recommended measure, describing,
based on available information, past and
present numbers and distribution of the
species involved and any threats faced
by the species; (3) provides information
regarding the status of the species over
all or a significant portion of its range;
and (4) is accompanied by the
appropriate supporting documentation
PO 00000
Frm 00006
Fmt 4702
Sfmt 4702
26479
in the form of bibliographic references,
reprints of pertinent publications,
copies of reports or letters from
authorities, and maps (50 CFR
424.14(b)(2)).
Court decisions have clarified the
appropriate scope and limitations of the
Services’ review of petitions at the 90day finding stage, in making a
determination that a petitioned action
‘‘may be’’ warranted. As a general
matter, these decisions hold that a
petition need not establish a ‘‘strong
likelihood’’ or a ‘‘high probability’’ that
a species is either threatened or
endangered to support a positive 90-day
finding.
We evaluate the petitioner’s request
based upon the information in the
petition including its references and the
information readily available in our
files. We do not conduct additional
research, and we do not solicit
information from parties outside the
agency to help us in evaluating the
petition. We will accept the petitioner’s
sources and characterizations of the
information presented, if they appear to
be based on accepted scientific
principles, unless we have specific
information in our files that indicates
the petition’s information is incorrect,
unreliable, obsolete, or otherwise
irrelevant to the requested action.
Information that is susceptible to more
than one interpretation or that is
contradicted by other available
information will not be dismissed at the
90-day finding stage, so long as it is
reliable and a reasonable person would
conclude it supports the petitioner’s
assertions. In other words, conclusive
information indicating the species may
meet the ESA’s requirements for listing
is not required to make a positive 90day finding. We will not conclude that
a lack of specific information alone
negates a positive 90-day finding, if a
reasonable person would conclude that
the unknown information itself suggests
an extinction risk of concern for the
species at issue.
To make a 90-day finding on a
petition to list a species, we evaluate
whether the petition presents
substantial scientific or commercial
information indicating the subject
species may be either threatened or
endangered, as defined by the ESA. First
we evaluate whether the information
presented in the petition, along with the
information readily available in our
files, indicates that the petitioned entity
constitutes a ‘‘species’’ eligible for
listing under the ESA. Next, we evaluate
whether the information indicates that
the species at issue faces extinction
risks that are cause for concern; this
may be indicated in information
E:\FR\FM\04MYP1.SGM
04MYP1
26480
Federal Register / Vol. 77, No. 87 / Friday, May 4, 2012 / Proposed Rules
erowe on DSK2VPTVN1PROD with PROPOSALS-1
expressly discussing the species’ status
and trends, or in information describing
impacts and threats to the species. We
evaluate any information on specific
demographic factors pertinent to
evaluating extinction risk for the species
at issue (e.g., population abundance and
trends, productivity, spatial structure,
age structure, sex ratio, diversity,
current and historical range, habitat
integrity or fragmentation), and the
potential contribution of identified
demographic risks to extinction risk for
the species. We then evaluate the
potential links between these
demographic risks and the causative
impacts and threats identified in section
4(a)(1).
Information presented on impacts or
threats should be specific to the species
and should reasonably suggest that one
or more of these factors may be
operative threats that act or have acted
on the species to the point that it may
warrant protection under the ESA.
Broad statements about generalized
threats to the species, or identification
of factors that could negatively impact
a species, do not constitute substantial
information that listing may be
warranted. We look for information
indicating that not only is the particular
species exposed to a factor, but that the
species may be responding in a negative
fashion; then we assess the potential
significance of that negative response.
Many petitions identify risk
classifications made by other
organizations or agencies, as evidence of
extinction risk for a species. Risk
classifications of the petitioned species
by other organizations or made under
other Federal or state statutes may be
informative, but the classification alone
may not provide the rationale for a
positive 90-day finding under the ESA.
Thus, when a petition cites such
classifications, we will evaluate the
source information that the
classification is based upon, in light of
the standards on extinction risk and
impacts or threats discussed above.
Species Description
Hippocampus zosterae is commonly
known as the dwarf or pygmy seahorse
(hereafter dwarf seahorse). The dwarf
seahorse is one of the smallest species
of seahorses, with adult height ranging
from 2 to 2.5 centimeters (Lourie et al.,
2004). In general, seahorses have heads
positioned at right angles to their
bodies, curved trunks, and a prehensile,
finless tail. The dwarf seahorse varies in
coloration; individuals can be beige,
yellow, green, or black, and some
individuals have white marking or dark
spots. Seahorses can change coloring
and grow skin filaments over time to
VerDate Mar<15>2010
15:04 May 03, 2012
Jkt 226001
blend in with their surroundings. Shortterm color changes may also occur
during courtship and other intra-species
interactions. Seahorse skin is stretched
over a series of bony plates that form
rings around the trunk and tail. The
dwarf seahorse has 9 to 10 trunk rings,
31 to 32 tail rings, and 12 pectoral fin
rays (Lourie et al., 2004). Seahorses in
general are ambush predators,
consuming primarily live, mobile prey,
such as small amphipods and other
invertebrates (Bruckner et al., 2005).
Dwarf seahorse males and females are
sexually dimorphic; males have a
relatively longer tail and a shorter snout
(Foster and Vincent, 2004). Male and
female dwarf seahorses form
monogamous pair bonds and remain
together and mate repeatedly over the
course of a single breeding cycle
(Masonjones and Lewis, 1996; 2000).
The breeding season for the dwarf
seahorse occurs February through
November and appears to be influenced
by environmental parameters such as
day length and water temperature
(Foster and Vincent, 2004). During
copulation the female deposits her egg
clutch into the male’s brood pouch
where it is fertilized (Foster and
Vincent, 2004). The gestation period
within the male’s brood pouch is
approximately 10 to 13 days, and males
can carry two broods a month. Most
male seahorse species can produce 100
to 300 young per pregnancy cycle.
However, smaller seahorse species, such
as the dwarf seahorse, release 3 to 16
offspring per cycle (Masonjones and
Lewis, 1996). Juvenile dwarf seahorses
are independent at birth, receiving no
further parental care. Juveniles reach
maturity in 3 months (Foster and
Vincent, 2004). The dwarf seahorse
generally lives 1 to 2 years, though
living longer than a year is considered
rare (Alford and Grist, 2005).
The dwarf seahorse’s distribution
ranges across the sub-tropical northwest
Atlantic and has well-defined habitat
preferences. Bruckner et al. (2005)
describe the species’ distribution as
patchy and its abundance as generally
low. This species occurs in insular
locations, including Bermuda, the
Bahamas, and Cuba; along Atlantic
continental shorelines from northeast
Florida through the Florida Keys; and,
in the Gulf of Mexico south to the Gulf
of Campeche (Bruckner et al., 2005).
The dwarf seahorse’s habitat is
restricted almost completely to seagrass
canopies (Bruckner et al., 2005).
Seahorses are characterized as feeble
swimmers with low mobility that may
disperse by clinging to drift macroalgae
or debris (Foster and Vincent, 2004;
Masonjones et al., 2010). The dwarf
PO 00000
Frm 00007
Fmt 4702
Sfmt 4702
seahorse exhibits preferences for areas
with dense and high seagrass canopies,
in shallow waters less than two meters,
and higher salinities (∼30 ppm) (Alford
and Grist, 2005; Bruckner et al., 2005;
Vincent, 2004). Sogard et al. (1987)
found total seagrass shoot density is
positively correlated with density of H.
zosterae. Seahorse populations were
significantly correlated with water flow,
with individuals being more likely to be
located in low-flow areas, such as
protected bays and lagoons, rather than
high-flow areas, such as bridge cuts
(Bruckner et al., 2005). The species is
described as occurring predominantly in
Florida’s estuaries, but is said to be
‘‘more abundant’’ in south Florida and
the Florida Keys. According to Bruckner
et al. (2005), the dwarf seahorse does
not appear to be common in many areas
in the Gulf of Mexico, west of Florida.
Analysis of the Petition
We evaluated whether the petition
presented the information indicated in
50 CFR 424.14(b)(2). The petition states
the administrative measures
recommended, and provides the
scientific and common name of the
species. The dwarf seahorse is
taxonomically classified as a species
and thus is an eligible entity for listing
under the ESA. The petition includes a
detailed narrative justification for the
recommended measure, including some
information on numbers of the species,
historical geographic occurrences of the
species, and threats faced by the species
(see summary below). The petition
provides some information relevant to
the status of the species. The petition
includes supporting references and
documentation. Therefore, we conclude
the petition meets the requirements of
50 CFR 424.14(b)(2). A detailed
description of their narrative
justification follows.
According to the petitioner, at least
four of the five causal factors in section
4(a)(1) of the ESA are adversely affecting
the continued existence of the dwarf
seahorse, specifically: (A) Present or
threatened destruction, modification, or
curtailment of its habitat or range;
(B) overutilization for commercial,
recreational, scientific, or educational
purposes; (D) inadequacy of existing
regulatory mechanisms; and (E) other
natural or manmade factors affecting its
continued existence. In the following
sections, we use the information
presented in the petition and in our files
to determine whether the petitioned
action may be warranted.
E:\FR\FM\04MYP1.SGM
04MYP1
erowe on DSK2VPTVN1PROD with PROPOSALS-1
Federal Register / Vol. 77, No. 87 / Friday, May 4, 2012 / Proposed Rules
Information on Extinction Risk and
Species Status
Information on extinction risk and
species status in the petition includes
references cited in support of the
conclusion that the dwarf seahorse has
declined or is declining, several risk
classifications by governmental and
non-governmental organizations, and
discussion of life history and
demographic characteristics that make
the species intrinsically vulnerable to
decline, particularly in conjunction
with threats and impacts such as habitat
loss.
The petitioner characterizes H.
zosterae as numerically low in
abundance where it occurs, and
describes numerous studies as
indicating the species’ population trend
is declining. In addition, the petitioner
states that a declining population trend
can be inferred from loss of seagrass
habitats, because the species is a habitat
generalist. The petitioner cites various
surveys and studies that indicate that
dwarf seahorse populations have
declined in many estuarine and bay
systems throughout the species range.
Several citations characterize the dwarf
seahorse as common, abundant, or a
dominant species. However, the
petitioner believes that these
characterizations are not supported,
because the number of dwarf seahorses
collected was a numerically low
component of the studies and surveys.
The information provided in some of
the studies is limited and it is difficult
to determine whether the sampling
methodology was appropriate for dwarf
seahorse collection. For example,
studies that sampled a variety of habitat
types (i.e., seagrass, mud or sand banks,
and deeper bays or channels, etc.) using
a methodology that may not be
conducive for seahorse collection (e.g.,
larger mesh sizes), would likely collect
few dwarf seahorses. Therefore, the
study results may not necessarily
represent low abundance or a declining
population trend, but could be due to
use of a sampling method that is not
conducive for surveying the species.
However, the petitioner also cites
several studies that indicate that the
species is not very common or abundant
throughout most of its range (i.e., Gulf
of Mexico, west of Florida). Several
citations have also documented dwarf
seahorse declines in many surveyed
seagrass systems in Florida. Declining
populations of the dwarf seahorse have
been observed to occur in conjunction
with seagrass loss.
The petitioner cites various status
classifications made by the American
Fisheries Society (AFS), International
VerDate Mar<15>2010
15:04 May 03, 2012
Jkt 226001
Union for Conservation of Nature
(IUCN), Florida Fish and Wildlife
Conservation Commission (FFWCC), the
Nature Conservancy (TNC), the
Commonwealth of Puerto Rico, and the
Commission for Environmental
Cooperation to support its claim that the
dwarf seahorse should be listed as
threatened or endangered under the
ESA. As discussed above, we do not
give any particular weight to
classifications established by other
scientific and conservation
organizations, which may or may not be
based on criteria that directly
correspond to the listing standards of
the ESA. However, we have reviewed
and evaluated the underlying
information used to develop the various
classifications given to the dwarf
seahorse by entities listed in the
petition.
The AFS designated the dwarf
seahorse as ‘‘vulnerable’’ in 2000.
According to AFS, this classification is
given to species that are ‘‘(special
concern) not endangered or threatened
severely but at possible risk of falling
into one of these categories in the near
future.’’ AFS gave the dwarf seahorse
this categorization based on (1) rarity,
(2) habitat degradation, and (3)
restricted habitat. AFS provided several
citations to supporting these
characterizations, but only one of them
was available to us or provided by the
petitioner. The available citation,
Fourqurean and Robblee (1999),
analyzed ecological changes (i.e.,
seagrass die-off, algal blooms, and
increased turbidity) in the Florida Bay
estuary. The study examined the
ecological changes that transpired as a
result of a large seagrass die-off that
occurred in Florida Bay during the late
1980s. The study noted that fish and
invertebrates inextricably associated
with seagrass habitat dramatically
declined following the referenced
seagrass die-off, lending support to the
AFS classification.
The petition cites the IUCN’s
classification of the dwarf seahorse as
‘‘Data Deficient,’’ which the IUCN
assigns to a species ‘‘when there is
inadequate information to make a direct,
or indirect, assessment of its risk of
extinction based on its distribution and/
or population status.’’ The IUCN
database entry for dwarf seahorse does
not contain any information directly
assessing the species’ population trends
or its extinction risk. However, the entry
does include referenced conclusions in
support of the petition’s conclusion that
the species’ status may be inferable from
losses of and threats to its seagrass
habitats, at least in the United States
(‘‘This species may be particularly
PO 00000
Frm 00008
Fmt 4702
Sfmt 4702
26481
susceptible to decline. The information
on habitat suggests they inhabit shallow
seagrass beds (Lourie et al., 1999) that
are susceptible to human degradation,
as well as making them susceptible to
being caught as bycatch * * * The
American Fisheries Society (AFS) lists
the United States populations of H.
zosterae as Threatened due to habitat
degradation (Musick et al., 2000). While
this status may apply on a national
level, we did not find information that
would justify such a listing for the
species as a whole.’’).
The FFWCC lists the dwarf seahorse
as a Species of Greatest Conservation
Need (SGCN) in the state of Florida’s
Wildlife Action Plan (FFWCC, 2005).
SGCN’s are defined as ‘‘animals that are
at risk or are declining.’’ The Action
Plan categorizes the dwarf seahorse’s
population status as low and population
trend as stable. We cannot evaluate any
underlying information used to
categorize the dwarf seahorse as a SGCN
because the information provided in
Florida’s Wildlife Action Plan does not
include species-specific information,
although the plan does also describe the
status of submerged aquatic vegetation
in Florida, particularly seagrasses, as
‘‘poor and declining,’’ ranking
numerous threats to these habitats as
‘‘very high’’ or ‘‘high.’’
TNC listed the dwarf seahorse as
imperiled in their ‘‘Identification of
Priority Sites for Conservation in the
Northern Gulf of Mexico: An
Ecoregional Plan’’ (Beck et al., 2000).
The objective of the Ecoregional Plan
was to identify biologically diverse
habitats within the northern Gulf of
Mexico, defined as extending from
Anclote Key, FL to the Laguna Madre de
Tamaulipas, Mexico, and to establish
high priority sites for conservation. The
plan also identified individual species
as ‘‘conservation targets’’ in addition to
identification of priority habitat sites for
conservation. ‘‘Conservation target’’
species were included if: ‘‘(i) They were
imperiled and conservation of their
habitats would be insufficient for their
conservation or (ii) they were declining
faster than their habitats.’’ The plan
identified the following species as
conservation target species, notably
including several species listed under
the ESA as threatened or endangered:
the dwarf seahorse, fringed pipefish,
opossum pipefish, Texas pipefish,
diamondback terrapin, Gulf sturgeon,
Florida manatee, and the Kemp’s ridley
sea turtle. The plan was based in part on
a Geographic Information Systems
database developed from ‘‘all the readily
available information on the
distribution of these [conservation]
targets.’’
E:\FR\FM\04MYP1.SGM
04MYP1
erowe on DSK2VPTVN1PROD with PROPOSALS-1
26482
Federal Register / Vol. 77, No. 87 / Friday, May 4, 2012 / Proposed Rules
In their 2009 report on Marine
Ecoregions of North America, the
Commission for Environmental
Cooperation categorized the dwarf
seahorse as a ‘‘species at risk’’ within
the northern Gulf of Mexico (Wilkinson
et al., 2009). However, because there is
no description of how the ‘‘at risk’’
categorization was determined, we
cannot further assess the Commission
for Environmental Cooperation’s
‘‘species at risk’’ categorization. The
petitioner also states that the dwarf
seahorse is recognized as a Species of
Concern by the Commonwealth of
Puerto Rico, but provides no citation or
information on this designation; we
were unable to evaluate the referenced
categorization made by the petitioner.
The petitioner describes life history
characteristics generally applicable to
the genus Hippocampus that could be
indicative of its extinction risk, for
which the petition provides supporting
information (Baum et al., 2003; Foster
and Vincent, 2004; Lourie et al., 2004;
Masonjones et al., 2010). We believe
that the dwarf seahorse’s life history
characteristics in and of themselves are
likely well-adapted for the species’
ecological niche. However, the petition
presents information on other threats
(i.e., habitat loss and overutilization)
that may interact with these life history
characteristics to increase extinction
risk. The dwarf seahorse’s narrow
habitat preference and low mobility
could increase the species’ ecological
vulnerability. Similarly, patchy spatial
distributions in combination with low
population density make a species
susceptible to habitat loss or change.
The petition and references also suggest
that other life history characteristics,
such as low fecundity, complex
reproductive behavior, and
monogamous mating systems may also
increase the species’ vulnerability.
Seahorse species have complex
reproductive behavior and appear to be
monogamous at least within a single
breeding cycle; if courting or pair bonds
are disrupted due to removal or
disturbance during courtship or mating
it may diminish the productivity within
a single breeding cycle. Low fecundity
could reduce the ability for population
recovery from overexploitation of
particular areas. The low mobility and
patchy distribution of dwarf seahorse
suggest that the species may be slow to
recolonize depleted areas. This is
particularly true given that the dwarf
seahorse is restricted to seagrasses
(Alford and Grist 2005; Lourie et al.,
2004), which in some areas have
declined substantially over the course of
several decades (Waycott et al., 2009).
VerDate Mar<15>2010
15:04 May 03, 2012
Jkt 226001
The importance of life history
characteristics in determining responses
to exploitation has been demonstrated
for a number of species (Jennings et al.,
1998).
In summary, the information
presented indicates that the dwarf
seahorse has a patchy distribution and
is not very abundant or common in
many areas throughout its range.
Declines in the dwarf seahorse
population have been documented in a
number of Florida’s estuaries and bays.
It is evident that the dwarf seahorse is
inextricably associated with seagrass
and the inferences made about the
species’ declining status due to habitat
loss are supported.
The petition also includes risk
classifications for the dwarf seahorse
made by other organizations; however
these do not include a specific analysis
of extinction risk for the dwarf seahorse.
While the species is present on these
lists, they provide no analysis of
population size and trends or other
information directly addressing whether
the species faces extinction risk that is
cause for concern. However, in some of
these classifications the dwarf
seahorse’s status is linked to the
degraded or threatened status of
seagrass habitats, which supports a
similar contention made by the petition.
The petitioner presents substantial
scientific or commercial information
indicating that the species’ life history
and demographic characteristics make it
vulnerable to decline and potential
extinction risk, particularly in
conjunction with threats to the species
including loss of its habitat.
Information on Impacts and Threats to
the Species
The petitioner states that impacts and
threats corresponding with four factors
in section 4(a)(1) of the ESA are
impacting the dwarf seahorse.
Specifically, the petitioner states that
the following factors are affecting the
dwarf seahorses continued existence:
(A) Present or threatened destruction,
modification, or curtailment of its
habitat or range; (B) overutilization for
commercial, recreational, scientific, or
educational purposes; (D) inadequacy of
existing regulatory mechanisms; and (E)
other natural or manmade factors.
The Present or Threatened Destruction,
Modification, or Curtailment of Its
Habitat or Range
Information from the petition and in
our files suggests that the primary threat
to the dwarf seahorse is from habitat
decline. The petitioner states that the
dwarf seahorse is threatened by the loss
and degradation of seagrass habitat,
PO 00000
Frm 00009
Fmt 4702
Sfmt 4702
which increases the species’
vulnerability. The petitioner references
considerable seagrass loss throughout
the species range and especially in the
northern Gulf of Mexico which has
occurred over the course of several
decades, and provides summaries of
indirect and direct anthropogenic
factors that continue to impact
seagrasses (oil and gas development,
loss and degradation of mangrove
habitat, declining water quality,
development and human population
growth, damage from vessels, trawling
and global climate change). Seagrass
declines cited within the petition range
from 6–90 percent (Waycott et al.,
2009), depending on the timeframe,
geographic area, and system (i.e.,
estuary, coastal water, or bay).
In Texas, the petition cites a 90
percent decline in ‘‘vascular vegetation’’
which occurred within the Galveston
Bay system on the upper Texas coast
from 1956 to 1990 (Pulich and White,
1990). Waycott et al. (2009) also
documented a 90 percent decline in
seagrass acreage within the Galveston
Bay system from 1956 to 1998. Hadley
et al. (2007) reported that nearly all
seagrass beds ‘‘disappeared from the
main parts of Galveston Bay in the
1970’s’’ and attributed the decline to a
variety of anthropogenic impacts, as
well as natural events. The petitioner
notes that eutrophication and harmful
algal blooms have caused seagrass
declines in Corpus Christi, Laguna
Madre, and Baffin Bay (An and Gardner,
2000; Breier et al., 2004). Several
factors, both natural (i.e., droughts,
hurricanes, fresh water flows, etc.) and
human-induced (i.e., nutrient loading or
water quality, sedimentation caused by
dredging, prop scarring caused by vessel
traffic, and direct physical disturbance),
are believed to be affecting the health,
abundance, distribution, and density of
seagrasses in Texas (Handley et al.,
2007; Pulich and White, 1997).
The petition provides evidence that
Alabama and Mississippi have also
experienced extensive seagrass loss.
Alabama documented an 82 percent
decline in seagrass coverage within
Mobile Bay between 1981 and 2003.
Perdido Bay lost approximately 75
percent of its seagrass coverage from
1940 to 2003. Similarly, Mississippi
Sound experienced a 50 percent decline
in seagrass coverage from 1992 to 2003
(Waycott et al., 2009).
For Florida, the petitioner references
a USFWS Conservation Plan and
Environmental Assessment for Pine
Island, Matlacha Pass, Island Bay, and
Caloosahatchee National Wildlife
Refuges, which states that Florida has
lost more than 50 percent of its seagrass
E:\FR\FM\04MYP1.SGM
04MYP1
erowe on DSK2VPTVN1PROD with PROPOSALS-1
Federal Register / Vol. 77, No. 87 / Friday, May 4, 2012 / Proposed Rules
habitat since the 1950s (USFWS, 2010).
The petition also cites the Florida State
Wildlife Action Plan’s status rank for
Florida’s submerged aquatic vegetation
of ‘‘poor and declining,’’ and the Plan’s
identification of numerous stresses to
seagrass ranked as ‘‘very high’’ or
‘‘high’’ (e.g., altered water quality,
habitat destruction, altered species
composition, and sedimentation)
(FFWCC, 2005). The petition references
seagrass loss in northwestern Florida
(e.g., Pensacola Bay, Choctawhatchee
Bay, St. Andrew Bay, and the Big Bend
region) (USGS, 2004; Waycott et al.,
2009). Florida’s Big Bend region lost
approximately 667,184 acres of seagrass
between 1984 and 1992 (USGS, 2004).
The petition references several studies
that report seagrass loss in southwestern
Florida’s estuary and bay systems,
including Tampa Bay, Sarasota Bay,
Greater Charlotte Harbor, Naples Bay,
Faka Union Bay, Fakahatchee Bay, and
Florida Bay. The petition states that
Tampa Bay lost approximately 60
percent of seagrass coverage between
1879 and 2006 (Waycott et al., 2009),
that seagrass in Sarasota Bay decreased
from 12,073 acres in 1950 to
approximately 9,063 acres in 2001
(Waycott et al., 2009), and that seagrass
in Naples Bay decreased by 90 percent
since the 1950s (FDEP, 2010). The 2010
Florida Department of Environmental
Protection (FDEP) Environmental
Assessment for Southwest Coastal
Estuaries refers to an ‘‘ecosystem
analysis’’ conducted by Carter et al.
(1973) which documented that
Fakahatchee Bay contained 57 percent
seagrass coverage and Union Bay
contained 23.1 percent seagrass
coverage in the early 1970s. Carter et al.
(1973) also documented three species of
seagrasses in these areas (Halophila
decipiens, H. wrightii, and Thalassia
testudinum), however the FDEP
assessment cites an unpublished 2005
study by Locker that suggests that since
the 1970s seagrass species composition
in Fakahatchee Bay has been reduced to
a single species (H. decipiens) and that
Faka Union Bay has lost all seagrass
cover.
The petitioner identifies oil and gas
refining and the byproducts from such
activities as a specific source of ongoing
impacts to seagrass habitats. The
petition references the DWH oil spill,
stating that ‘‘a significant portion of H.
zosterae’s range is threatened by
pollution from the spill, which covered
vast areas in the Gulf.’’ The petitioner
states that oil pollution and the use of
dispersants has resulted in the direct
mortality of the dwarf seahorse, the
destruction and degradation of their
VerDate Mar<15>2010
15:04 May 03, 2012
Jkt 226001
seagrass habitat, and contamination and
reduction of their invertebrate prey. The
petition references a Project Seahorse
news release (2010) where scientists at
the organization caution that the dwarf
seahorse could face extinction as a
result of the DWH oil spill, citing
impacts such as direct mortality due to
high toxin levels, contamination of
habitat, as well as contamination of the
species food sources. The petition cites
peer-reviewed scientific literature
which supports the claim that oil
pollution and the use of dispersants can
adversely affect seagrasses and fishes at
all life stages. Information was provided
on the quantities of oil and methane
released into the Gulf of Mexico, as well
as the amount of coastal shoreline
damaged by the DWH oil spill. The
petitioner also discusses the long-term
pollution that the oil industry causes to
coastal environments in general.
The petitioner also presents
arguments that the destruction of
Florida’s mangrove habitats may be
adversely affecting the dwarf seahorse
‘‘to the extent that seagrass beds are
negatively affected by the loss of
mangroves, or that mangroves provide
direct habitat value for the seagrasses,’’
because ‘‘in some areas seagrass beds
occur in close association with
mangroves, with mangroves protecting
seagrass beds by trapping sediments and
stabilizing shorelines (Hoff et al., 2010;
Pauly and Ingles, 1999).’’ However, the
petition does not provide information to
characterize the extent of the association
between mangroves and seagrasses, and
the petition is limited to generalized
statements of potential sources of
threats to seagrasses from impacts to
mangroves. We acknowledge that
mangroves in Florida have been
destroyed or degraded in large amounts
over the course of decades, and face
many of the same ongoing threats of loss
and degradation as do seagrasses,
discussed elsewhere in this finding.
The petition lists several other factors
it identifies as contributing to seagrass
loss including declining water quality,
development and human population
growth, damage from vessels, trawling,
and global climate change. As discussed
above, extensive seagrass loss has
occurred throughout the Northern Gulf
of Mexico over the last several decades.
The causes for these losses are many,
but include climate and water-level
variations, physical removal,
smothering with sedimentation, light
reduction resulting from turbidity or
phytoplankton, and increased nutrient
loading (Handley et al., 2011).
Seagrasses are highly dependent on
water quality and clarity for their
survival, and reduced water quality due
PO 00000
Frm 00010
Fmt 4702
Sfmt 4702
26483
to nutrient loading, algal blooms, and
contamination resulting from non-point
source pollution, such as storm water
run-off, has been identified as a threat/
stressor to seagrass. The petition cites
development and human population
growth as a factor which increases the
dwarf seahorse’s risk of extinction. The
petition cites Lellis-Dibble et al. (2008)
as support for its statement that human
population growth affects coastal
resources, stating that ‘‘53 percent of the
current U.S. population lives in coastal
counties, creating tremendous stress on
coastal resources.’’ The petition
references various activities that are
often associated with coastal
development (i.e., dredging and
channelization, vessel prop scarring,
increased water pollution, altered
hydrologic and salinity regimes), which
are all also recognized to cause stress
and/or degradation to seagrass habitat.
The potential consequences of threats to
the dwarf seahorse habitat are discussed
above.
In summary, the petition and its
references present substantial
information that indicates the present or
threatened destruction, modification, or
curtailment of habitat or range may be
causing or contributing to extinction
risk that is cause for concern for the
dwarf seahorse.
Overutilization for Commercial,
Recreational, Scientific, or Educational
Purposes
The petitioner cites information that
dwarf seahorse populations are
declining and that their life history
characteristics (sparse distribution, low
population densities, low mobility,
small home ranges, slow re-colonization
potential, low rates of population
increase, highly structured social and
reproductive behavior) increase their
vulnerability to overexploitation, and
that the demand for seahorses in the
aquarium, curio, and traditional Chinese
medicine trades is increasing, further
exasperating the species’ exploited
status.
Dwarf seahorses are harvested
commercially to be sold and traded live
as aquarium fishes, and are also dried
and sold at curio shops as souvenirs, or
processed into key chains, jewelry,
ornaments, paperweights, etc. There is
also a high demand for seahorses in the
traditional Chinese medicine trade
where they are believed to cure several
health disorders (Vincent, 1995).
Smaller sized, bony seahorses, such as
the dwarf seahorse, are less desirable for
the purpose of traditional Chinese
medicine (Lourie et al., 2004). However,
Vincent (1995) stated that ‘‘poor
quality’’ seahorses are increasingly
E:\FR\FM\04MYP1.SGM
04MYP1
erowe on DSK2VPTVN1PROD with PROPOSALS-1
26484
Federal Register / Vol. 77, No. 87 / Friday, May 4, 2012 / Proposed Rules
susceptible to overexploitation by the
traditional Chinese medicine trade
because the supplies of larger ‘‘good
quality’’ seahorses are in decline. In
2004, concerns over the international
trade of seahorses resulted in all
seahorse species being protected under
Appendix II of the Convention for the
International Trade in Endangered and
Threatened Species (CITES; for further
discussion, see next section). A CITES
technical memorandum on the
international conservation and trade of
seahorses (Bruckner et al., 2005) noted
that the dwarf seahorse is one of 17
seahorse species observed or reported to
be traded. Several publications have
noted the popularity of the dwarf
seahorse in the aquarium trade (Vincent,
1996; Woods, 2001). Woods (2001)
found that the dwarf seahorse is the
second most exported ornamental fish
in Florida. Koldewey et al. (2010)
conducted an international review of
the seahorse aquaculture trade from
1997 to 2008 and found that 100 percent
of dwarf seahorse exports were wildcaught individuals, not captive-bred.
Alford and Grist (2005) suggest that
wild dwarf seahorse populations have
decreased in Florida and that the
species is difficult to locate and harvest
in areas where it was once considered
common.
The only seahorse commercial fishery
in the United States is located in the
state of Florida. Bruckner et al. (2005)
state that most of the seahorse harvest
in Florida is for the dried curio market.
Dwarf seahorses are primarily harvested
in state waters as targeted catch by
divers using nets or as bycatch by
fishers using trawls (e.g., in the live-bait
shrimp fishery) with some seahorse
harvest conducted by seine or dredge
(Bruckner et al., 2005). A study
conducted on the Marine Life Fishery in
Florida from 1990 to 1998 (Adams et al.,
2001) documented a five-fold increase
in seahorse landings between 1991 and
1992 (from 14,000 harvested in 1991 to
83,700 harvested in 1992). The
increased landings primarily consisted
of the dwarf seahorse. Bruckner et al.
(2005), state that 90 percent of the dwarf
seahorse harvest is in southeast Florida
and the Florida Keys region and that
more than 50 percent of the harvest in
southwest Florida was collected by
divers from 1990 to 2003. The number
of seahorses landed in Florida varied
between 1990 and 2003, from 6,000 to
111,000 individuals per year.
Approximately 91 percent of those
landings were dwarf seahorses, so the
number of dwarf seahorses landed
(1990–2003) ranged from 2,142 to
98,779 individuals per year (Bruckner et
VerDate Mar<15>2010
15:04 May 03, 2012
Jkt 226001
al., 2005). The petition provides data on
the quantities of seahorses being
exported, allotted bag limits permitted
by the State of Florida, and the ways in
which the species is commercially
utilized (e.g., aquarium market, curio
market, and Chinese traditional
medicine trade).
Commercial harvest may be
negatively affecting dwarf seahorse
populations. The petition and its
supporting citations also indicate that
commercial demand for the dwarf
seahorse is extensive, and that
populations in some geographic areas
where they are harvested may have
declined. Therefore, based on the
standards for making 90-day findings,
we accept the petition’s
characterizations of the information
presented and conclude that substantial
information in the petition and in our
files suggest overutilization may be a
factor contributing to extinction risk for
the dwarf seahorse.
Inadequacy of Existing Regulatory
Mechanisms
The petitioner states that regulatory
mechanisms at the international,
federal, and state level are inadequate to
protect the dwarf seahorse from
commercial overharvest and trade, and
inadequate to protect its seagrass habitat
from loss and degradation. As such, the
petitioner argues that inadequacy of
existing regulatory mechanisms is one
of the factors causing the species to be
threatened or endangered.
The petition notes that in 2004, the
entire genus Hippocampus, including
the dwarf seahorse, was listed under
Appendix II of CITES. Species listed
under Appendix II are those in which
trade must be controlled in order to
avoid utilization incompatible with
their survival, but are not necessarily at
risk of extinction. International trade of
CITES Appendix II species can take
place if an export permit is issued.
Export permits are only issued if the
Management Authority of the exporting
country is satisfied that the specimens
were ‘‘legally obtained’’ and the
Scientific Authority of the exporting
country advises that the ‘‘export will not
be detrimental to the survival of the
species in the wild.’’ The petition lists
several reasons it believes that CITES
Appendix II does not effectively protect
the dwarf seahorse from
overexploitation: it does not apply to
seahorses that are traded entirely within
the U.S. domestic markets, not all
exports are inspected, and certification
that trade is not detrimental to the
persistence of the dwarf seahorse is not
possible because no comprehensive
population data is available. The
PO 00000
Frm 00011
Fmt 4702
Sfmt 4702
petition and citations indicate that no
stock assessment has been conducted
for the dwarf seahorse.
The petitioner also states that the
CITES listing is not sufficient to protect
the dwarf seahorse from illegal trade
occurring in Mexico, and cites
references finding that most seahorse
trade in Mexico occurs on the black
market. Mexican populations of dwarf
seahorse are listed in the NOM–059–
SEMARNAT–2001 as species subject to
special protection; Mexico prohibits the
intentional capture and trade of wild
seahorses, permitting only the
commercialization of cultured and
incidentally caught seahorses (Lourie et
al., 2004). The petitioner acknowledges
that Mexico prohibits the deliberate
capture and trade of wild seahorses and
only authorizes the trade of seahorses if
they are ‘‘incidentally caught in nonselective fishing gear.’’ However, the
petitioner asserts that Mexico’s
regulations and enforcement of those
regulations are inadequate to protect the
dwarf seahorse from decline or illegal
harvest.
The petitioner also argues that other
existing regulatory mechanisms at the
Federal (Magnuson-Stevens Fishery
Conservation and Management Act,
National Marine Sanctuaries Act) and
state level relevant to the U.S. seahorse
trade (Florida laws and regulations,
discussed below) are also inadequate to
protect the species. Neither Federal law
prohibits collection of the dwarf
seahorse. Florida has regulatory
mechanisms that require anyone
wishing to collect or sell dwarf
seahorses to have a Saltwater Product
License, a Marine Life Endorsement,
and a Restricted Species Endorsement
under Florida law (Chapter
370.021.01(2)(a)) and Administrative
Code 16R–500). There is a commercial
bag limit of 400 dwarf seahorses per
person or per vessel per day (whichever
is less), and a recreational bag limit of
5 dwarf seahorses per person, per day
(FL 68B–42.005), but no apparent cap
on total annual take of the species.
There are no seasonal restrictions or
closures for this fishery. There does not
appear to be a limit on the number of
seahorses that can be collected as
bycatch, but the landings value of all
marine life bycatch must be less than
$5,000 annually (Florida Marine
Fisheries Commission, 2009).
The petitioner also argues that
existing regulatory measures do not
adequately protect the dwarf seahorse’s
seagrass habitat. The petition references
declining water quality and the physical
damage (prop scarring) caused by
recreational and commercial vessels as
contributing to the decline of seagrass
E:\FR\FM\04MYP1.SGM
04MYP1
Federal Register / Vol. 77, No. 87 / Friday, May 4, 2012 / Proposed Rules
erowe on DSK2VPTVN1PROD with PROPOSALS-1
habitat throughout the dwarf seahorse’s
range. The petition states that the
protections of the Florida Keys National
Marine Sanctuary have not prevented
ongoing threats to seagrasses since the
sanctuary’s designation. Similarly, the
petition states that loss and degradation
of seagrasses is not prevented within
other areas protected by the state or
federal governments. The petitioner
acknowledges that federal regulations
such as the Coastal Zone Management
Act provide a degree of habitat
protection, but say that despite the Act’s
intentions, seagrass habitat continues to
decline throughout the dwarf seahorse’s
range.
The petitioner also states that
protection from oil pollution is
inadequate because, while the Oil
Pollution Act is intended to protect the
species’ habitat from spilled oil,
accidental spills inevitably occur.
Finally, the petition states that
regulation of greenhouse gases is
inadequate. However, the discussion
does not explain how the described
potential increases in atmospheric
concentrations of CO2 that may result in
the absence of adequate regulations may
result in extinction risk for the dwarf
seahorse.
In summary, the petition presents
substantial information indicating that
inadequacy of existing regulatory
mechanisms may be contributing to
extinction risk that is cause for concern
for the dwarf seahorse, particularly in
regards to regulations intended to
control harvest for domestic markets
and international trade, and we will
evaluate these regulations’ impacts on
dwarf seahorse during the status review.
We will also evaluate whether existing
regulatory mechanisms relevant to
preventing damage to seagrasses are
inadequate in a manner that contributes
to extinction risk for the dwarf seahorse.
Similarly, we will evaluate whether
existing regulatory mechanisms relevant
to preventing oil pollution are
inadequate in a manner that contributes
to extinction risk for the dwarf seahorse.
Other Natural or Manmade Factors
The petition describes other natural or
manmade factors that may be affecting
the dwarf seahorse, including life
history characteristics, bycatch
mortality, noise, and unintentional and
illegal fishing, hurricanes or tropical
storms, and invasive species. As
described previously, the petition
provides information describing how
‘‘life history parameters’’ in the form of
complex reproductive strategies, low
population density, and patchy spatial
distribution, are affecting the species’
ability to recover from habitat loss and
VerDate Mar<15>2010
15:04 May 03, 2012
Jkt 226001
overexploitation. The available
information indicates that the dwarf
seahorse has some life history
characteristic that may increase the
species’ vulnerability, in conjunction
with habitat decline and overutilization.
The petitioner also suggests that the
dwarf seahorse is vulnerable to
increased risk of extinction, because
‘‘low frequency boat motor noise
negatively impacts the health, behavior,
and reproductive success of dwarf
seahorses (Masonjones and Babson
2003).’’ The petition cites a single
reference, Masonjones and Babson
(2003), to support its assertion that
vessel noise is a threat to the dwarf
seahorse. We attempted to evaluate the
referenced citation, which is an abstract
from the 17th Annual Meeting of the
Society for Conservation Biology—Book
of Abstracts (2003). According to the
Masonjones and Babson (2003) abstract,
dwarf seahorses were exposed to
recordings of low frequency boat motor
noise (ranging from 70–110 dB and
60–600 HZ) with ‘‘continuous’’ and
‘‘intermittent’’ noise treatments, as well
as ‘‘quiet’’ treatments. The abstract
states that adult dwarf seahorses
exposed to ‘‘noise conditions showed a
significantly higher incidence of gas
bladder disease, behavioral differences,
and had significantly longer gestation
lengths than controls. Fewer offspring
were born to parents exposed to
continuous noise and the offspring were
smaller and had lower growth rates than
control offspring.’’ The abstract provides
minimal information, and we cannot
determine whether this study was
conducted in a laboratory or in the
species’ natural environment, though
we assume from the limited information
the study was conducted in a laboratory.
Based on information in the abstract we
cannot determine what the study’s
limitations were for ‘‘continuous’’ and
‘‘intermittent’’ noise exposures levels, as
well as ‘‘quiet’’ treatments. Likewise, we
cannot determine the intensity levels
the seahorses were exposed to or the
duration of exposure time. We recognize
that dwarf seahorses in the wild are
exposed to levels of low frequency noise
transmitted from vessels, but exposure
levels are likely temporary and
infrequent (i.e., only when a vessel is
operating within the vicinity of a
seahorse). Without additional
information (e.g., exposure duration,
how noise levels tested in the laboratory
environment compare to noise levels in
the natural environment, and how noise
levels may be attenuated at distances
from the noise source given water
depths, turbidity, currents, and other
natural factors) we cannot conclude
PO 00000
Frm 00012
Fmt 4702
Sfmt 4702
26485
how the results of this study on vessel
noise correspond to impacts on wild
populations. The information presented
in the referenced abstract does not
constitute substantial information
indicating that low frequency vessel
noise is an operative threat that has
acted or is acting on the species to the
point that it is contributing to an
extinction risk of concern for the dwarf
seahorse.
As described previously, bycatch of
the dwarf seahorse in trawl fisheries,
specifically the live-bait trawl fishery in
Florida, is a source of commercial
harvest. According to the petitioner,
seahorses are affected by nonselective
fishing gear because trawling often
covers seahorse habitat and their life
history characteristics render them
particularly vulnerable to
overexploitation. The petitioner states
that seahorses likely experience injuries
or mortality during towing and sorting,
but notes that the post-release mortality
of bycaught seahorses is unknown. The
petitioner also references a study that
suggests discarded seahorses are subject
to increased predation upon release and
experience deleterious effects as a result
of being bycaught (Foster and Vincent,
2004). It is conceivable that incidentally
caught seahorses that are not retained
for commercial sale could be injured or
die post-release and that unintentional
collection could disrupt natural
behaviors. However, as the petition
notes, post-release mortality estimates
are not available for seahorses. The
available information is insufficient to
indicate post-release mortality or
bycatch mortality is a threat that is
contributing to an extinction risk of
concern for the dwarf seahorse.
Nonetheless, as described in the
overutilization section of this finding,
we will evaluate to what extent the
dwarf seahorse is affected by indirect
(i.e., bycatch) and direct commercial
harvest during the status review.
Last, the petitioner asserts that
unintentional and illegal fishing,
hurricanes and tropical storms, and
invasive species are ‘‘potentially
threatening’’ the dwarf seahorse. Broad
statements about generalized threats to
the species do not constitute substantial
information that listing may be
warranted. The petition does not
present information indicating that the
dwarf seahorse is responding in a
negative fashion to unintentional and
illegal fishing, hurricanes and tropical
storms, or invasive species. Therefore,
we find that the petition does not
present substantial information to
indicate that these generalized threats
are operative and have acted or acting
on the species to the point that it may
E:\FR\FM\04MYP1.SGM
04MYP1
26486
Federal Register / Vol. 77, No. 87 / Friday, May 4, 2012 / Proposed Rules
warrant protection under the ESA.
Nonetheless, during the status review
we will research and consider all
information submitted relevant to these
potential threats.
Summary of Section 4(a)(1) Factors
We conclude that the petition
presents substantial scientific or
commercial information indicating that
a combination of at least four of the
section 4(a)(1) factors may be causing or
contributing to extinction risk for the
dwarf seahorse: present or threatened
destruction, modification, or
curtailment of its habitat or range,
overutilization for commercial,
recreational, scientific, or educational
purposes, inadequate existing regulatory
mechanisms, and other natural or
manmade factors.
erowe on DSK2VPTVN1PROD with PROPOSALS-1
Petition Finding
After reviewing the information
contained in the petition, as well as
information readily available in our
files, we conclude the petition presents
substantial scientific information
indicating the petitioned action of
listing the dwarf seahorse as threatened
or endangered may be warranted. In
accordance with section 4(b)(3)(B) of the
ESA and our implementing regulations
VerDate Mar<15>2010
15:04 May 03, 2012
Jkt 226001
(50 CFR 424.14(b)(2)), we will
commence a review of the status of the
dwarf seahorse and make a final
determination as to whether the
petitioned action is warranted. During
our status review, we will determine
whether the species is in danger of
extinction (endangered) or likely to
become so in the foreseeable future
(threatened) throughout all or a
significant portion of its range, or that
the species does not warrant listing
under the ESA.
efforts to protect and restore the species
and their seagrass habitats; (8)
management, regulatory, and
enforcement information; and (9) any
biological information on this species.
We request that all information be
accompanied by: (1) Supporting
documentation such as maps,
bibliographic references, or reprints of
pertinent publications; and (2) the
submitter’s name, address, and any
association, institution, or business that
the person represents.
Information Solicited
To ensure that the status review is
based on the best available scientific
and commercial data, we are soliciting
information on whether the dwarf
seahorse is endangered or threatened.
Specifically, we are soliciting
information in the following areas:
(1) Historical and current distribution
and abundance of this species
throughout its range; (2) historical and
current population status and trends; (3)
life history in marine environments; (4)
curio, traditional medicine, and
aquarium trade or other trade data; (5)
any current or planned activities that
may adversely impact the species; (6)
historical and current seagrass trends
and status; (7) ongoing or planned
References Cited
PO 00000
Frm 00013
Fmt 4702
Sfmt 9990
A complete list of references is
available upon request from the
Protected Resources Division on NMFS
Southeast Regional Office (see
ADDRESSES).
Authority
The authority for this action is the
Endangered Species Act of 1973, as
amended (16 U.S.C. 1531 et seq.).
Dated: April 30, 2012.
Paul Doremus,
Deputy Assistant Administrator for
Operations, National Marine Fisheries
Service.
[FR Doc. 2012–10845 Filed 5–3–12; 8:45 am]
BILLING CODE 3510–22–P
E:\FR\FM\04MYP1.SGM
04MYP1
Agencies
[Federal Register Volume 77, Number 87 (Friday, May 4, 2012)]
[Proposed Rules]
[Pages 26478-26486]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: 2012-10845]
=======================================================================
-----------------------------------------------------------------------
DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
50 CFR Parts 223 and 224
[Docket No. 120417006-1018-01]
RIN 0648-XA496
Endangered and Threatened Wildlife; 90-Day Finding on a Petition
To List the Dwarf Seahorse as Threatened or Endangered Under the
Endangered Species Act
AGENCY: National Marine Fisheries Service (NMFS), National Oceanic and
Atmospheric Administration (NOAA), Department of Commerce.
ACTION: Ninety-day petition finding, request for information, and
initiation of status review.
-----------------------------------------------------------------------
SUMMARY: We, NMFS, announce a 90-day finding on a petition to list the
dwarf seahorse (Hippocampus zosterae) as threatened or endangered and
designate critical habitat under the Endangered Species Act (ESA). We
find that the petition and information in our files present substantial
scientific or commercial information indicating that the petitioned
actions may be warranted. We will conduct a status review of the
species to determine if the petitioned action is warranted. To ensure
that the status review is comprehensive, we are soliciting scientific
and commercial information regarding this species (see below).
DATES: Information and comments on the subject action must be received
by July 3, 2012.
ADDRESSES: You may submit comments, identified by the code NOAA-NMFS-
2012-0101, addressed to: Calusa Horn, Natural Resource Specialist, by
any of the following methods:
Electronic Submissions: Submit all electronic comments via
the Federal eRulemaking Portal https://www.regulations.gov
Facsimile (fax): 727-824-5309.
Mail: NMFS, Southeast Regional Office, 263 13th Avenue
South, St. Petersburg, FL 33701.
Hand delivery: You may hand deliver written comments to
our office during normal business hours at the street address given
above.
Instructions: All comments received are a part of the public record
and may be posted to https://www.regulations.gov without change. All
personally identifiable information (for example, name, address, etc.)
voluntarily submitted by the commenter may be publicly accessible. Do
not submit
[[Page 26479]]
confidential business information or otherwise sensitive or protected
information. We will accept anonymous comments. Attachments to
electronic comments will be accepted in Microsoft Word, Excel, Corel
WordPerfect, or Adobe PDF file formats only.
FOR FURTHER INFORMATION CONTACT: Calusa Horn, NMFS, Southeast Region,
(727) 824-5312; or Dwayne Meadows, NMFS, Office of Protected Resources,
(301) 427-8403.
SUPPLEMENTARY INFORMATION:
Background
On April 7, 2010, we received a petition from the Center for
Biological Diversity to list the dwarf seahorse (Hippocampus zosterae)
as threatened or endangered under the ESA. The petitioner also
requested that critical habitat be designated. The petition states that
the species is declining and threatened with extinction due to loss or
curtailment of seagrass habitat and range, overutilization resulting
from commercial seahorse collection, inadequacy of existing regulatory
mechanisms, vulnerable life-history parameters, noise, bycatch
mortality, illegal fishing, invasive species, and tropical storms and
hurricanes. Copies of this petition are available from us (see
ADDRESSES, above) or at https://sero.nmfs.noaa.gov/pr/ListingPetitions.htm.
ESA Statutory and Regulatory Provisions and Evaluation Framework
Section 4(b)(3)(A) of the ESA of 1973, as amended (U.S.C. 1531 et
seq.), requires, to the maximum extent practicable, that within 90 days
of receipt of a petition to list a species as threatened or endangered,
the Secretary of Commerce make a finding on whether that petition
presents substantial scientific or commercial information indicating
that the petitioned action may be warranted, and to promptly publish
such finding in the Federal Register (16 U.S.C. 1533(b)(3)(A)). When
substantial scientific or commercial information in a petition
indicates the petitioned action may be warranted (a ``positive 90-day
finding''), we are required to promptly commence a review of the status
of the species concerned during which we will conduct a comprehensive
review of the best available scientific and commercial information. In
such cases, within 12 months of receipt of the petition, we shall
conclude the review with a finding as to whether, in fact, the
petitioned action is warranted. Because the finding at the 12-month
stage is based on a more thorough review of the available information,
as compared to the narrow scope of review at the 90-day stage, a ``may
be warranted'' finding does not prejudge the outcome of the status
review.
Under the ESA, a listing determination may address a ``species,''
which is defined to also include subspecies and, for any vertebrate
species, any distinct population segment (DPS) that interbreeds when
mature (16 U.S.C. 1532(16)). A joint NMFS-U.S. Fish and Wildlife
Service (USFWS) policy clarifies the agencies' interpretation of the
phrase ``distinct population segment'' for the purposes of listing,
delisting, and reclassifying a species under the ESA (61 FR 4722;
February 7, 1996). A species, subspecies, or DPS is ``endangered'' if
it is in danger of extinction throughout all or a significant portion
of its range, and ``threatened'' if it is likely to become endangered
within the foreseeable future throughout all or a significant portion
of its range (ESA sections 3(6) and 3(20), respectively, 16 U.S.C.
1532(6) and (20)). Pursuant to the ESA and our implementing
regulations, we determine whether species are threatened or endangered
because of any one or a combination of the following five section
4(a)(1) factors: (1) The present or threatened destruction,
modification, or curtailment of habitat or range; (2) overutilization
for commercial, recreational, scientific, or educational purposes; (3)
disease or predation; (4) inadequacy of existing regulatory mechanisms;
and (5) any other natural or manmade factors affecting the species'
existence (16 U.S.C. 1533(a)(1), 50 CFR 424.11(c)).
ESA-implementing regulations issued jointly by us and the USFWS (50
CFR 424.14(b)) define ``substantial information'' in the context of
reviewing a petition to list, delist, or reclassify a species, as the
amount of information that would lead a reasonable person to believe
that the measure proposed in the petition may be warranted. In
evaluating whether substantial information is contained in a petition,
the Secretary must consider whether the petition: (1) Clearly indicates
the administrative measure recommended and gives the scientific and any
common name of the species involved; (2) contains detailed narrative
justification for the recommended measure, describing, based on
available information, past and present numbers and distribution of the
species involved and any threats faced by the species; (3) provides
information regarding the status of the species over all or a
significant portion of its range; and (4) is accompanied by the
appropriate supporting documentation in the form of bibliographic
references, reprints of pertinent publications, copies of reports or
letters from authorities, and maps (50 CFR 424.14(b)(2)).
Court decisions have clarified the appropriate scope and
limitations of the Services' review of petitions at the 90-day finding
stage, in making a determination that a petitioned action ``may be''
warranted. As a general matter, these decisions hold that a petition
need not establish a ``strong likelihood'' or a ``high probability''
that a species is either threatened or endangered to support a positive
90-day finding.
We evaluate the petitioner's request based upon the information in
the petition including its references and the information readily
available in our files. We do not conduct additional research, and we
do not solicit information from parties outside the agency to help us
in evaluating the petition. We will accept the petitioner's sources and
characterizations of the information presented, if they appear to be
based on accepted scientific principles, unless we have specific
information in our files that indicates the petition's information is
incorrect, unreliable, obsolete, or otherwise irrelevant to the
requested action. Information that is susceptible to more than one
interpretation or that is contradicted by other available information
will not be dismissed at the 90-day finding stage, so long as it is
reliable and a reasonable person would conclude it supports the
petitioner's assertions. In other words, conclusive information
indicating the species may meet the ESA's requirements for listing is
not required to make a positive 90-day finding. We will not conclude
that a lack of specific information alone negates a positive 90-day
finding, if a reasonable person would conclude that the unknown
information itself suggests an extinction risk of concern for the
species at issue.
To make a 90-day finding on a petition to list a species, we
evaluate whether the petition presents substantial scientific or
commercial information indicating the subject species may be either
threatened or endangered, as defined by the ESA. First we evaluate
whether the information presented in the petition, along with the
information readily available in our files, indicates that the
petitioned entity constitutes a ``species'' eligible for listing under
the ESA. Next, we evaluate whether the information indicates that the
species at issue faces extinction risks that are cause for concern;
this may be indicated in information
[[Page 26480]]
expressly discussing the species' status and trends, or in information
describing impacts and threats to the species. We evaluate any
information on specific demographic factors pertinent to evaluating
extinction risk for the species at issue (e.g., population abundance
and trends, productivity, spatial structure, age structure, sex ratio,
diversity, current and historical range, habitat integrity or
fragmentation), and the potential contribution of identified
demographic risks to extinction risk for the species. We then evaluate
the potential links between these demographic risks and the causative
impacts and threats identified in section 4(a)(1).
Information presented on impacts or threats should be specific to
the species and should reasonably suggest that one or more of these
factors may be operative threats that act or have acted on the species
to the point that it may warrant protection under the ESA. Broad
statements about generalized threats to the species, or identification
of factors that could negatively impact a species, do not constitute
substantial information that listing may be warranted. We look for
information indicating that not only is the particular species exposed
to a factor, but that the species may be responding in a negative
fashion; then we assess the potential significance of that negative
response. Many petitions identify risk classifications made by other
organizations or agencies, as evidence of extinction risk for a
species. Risk classifications of the petitioned species by other
organizations or made under other Federal or state statutes may be
informative, but the classification alone may not provide the rationale
for a positive 90-day finding under the ESA. Thus, when a petition
cites such classifications, we will evaluate the source information
that the classification is based upon, in light of the standards on
extinction risk and impacts or threats discussed above.
Species Description
Hippocampus zosterae is commonly known as the dwarf or pygmy
seahorse (hereafter dwarf seahorse). The dwarf seahorse is one of the
smallest species of seahorses, with adult height ranging from 2 to 2.5
centimeters (Lourie et al., 2004). In general, seahorses have heads
positioned at right angles to their bodies, curved trunks, and a
prehensile, finless tail. The dwarf seahorse varies in coloration;
individuals can be beige, yellow, green, or black, and some individuals
have white marking or dark spots. Seahorses can change coloring and
grow skin filaments over time to blend in with their surroundings.
Short-term color changes may also occur during courtship and other
intra-species interactions. Seahorse skin is stretched over a series of
bony plates that form rings around the trunk and tail. The dwarf
seahorse has 9 to 10 trunk rings, 31 to 32 tail rings, and 12 pectoral
fin rays (Lourie et al., 2004). Seahorses in general are ambush
predators, consuming primarily live, mobile prey, such as small
amphipods and other invertebrates (Bruckner et al., 2005).
Dwarf seahorse males and females are sexually dimorphic; males have
a relatively longer tail and a shorter snout (Foster and Vincent,
2004). Male and female dwarf seahorses form monogamous pair bonds and
remain together and mate repeatedly over the course of a single
breeding cycle (Masonjones and Lewis, 1996; 2000). The breeding season
for the dwarf seahorse occurs February through November and appears to
be influenced by environmental parameters such as day length and water
temperature (Foster and Vincent, 2004). During copulation the female
deposits her egg clutch into the male's brood pouch where it is
fertilized (Foster and Vincent, 2004). The gestation period within the
male's brood pouch is approximately 10 to 13 days, and males can carry
two broods a month. Most male seahorse species can produce 100 to 300
young per pregnancy cycle. However, smaller seahorse species, such as
the dwarf seahorse, release 3 to 16 offspring per cycle (Masonjones and
Lewis, 1996). Juvenile dwarf seahorses are independent at birth,
receiving no further parental care. Juveniles reach maturity in 3
months (Foster and Vincent, 2004). The dwarf seahorse generally lives 1
to 2 years, though living longer than a year is considered rare (Alford
and Grist, 2005).
The dwarf seahorse's distribution ranges across the sub-tropical
northwest Atlantic and has well-defined habitat preferences. Bruckner
et al. (2005) describe the species' distribution as patchy and its
abundance as generally low. This species occurs in insular locations,
including Bermuda, the Bahamas, and Cuba; along Atlantic continental
shorelines from northeast Florida through the Florida Keys; and, in the
Gulf of Mexico south to the Gulf of Campeche (Bruckner et al., 2005).
The dwarf seahorse's habitat is restricted almost completely to
seagrass canopies (Bruckner et al., 2005). Seahorses are characterized
as feeble swimmers with low mobility that may disperse by clinging to
drift macroalgae or debris (Foster and Vincent, 2004; Masonjones et
al., 2010). The dwarf seahorse exhibits preferences for areas with
dense and high seagrass canopies, in shallow waters less than two
meters, and higher salinities (~30 ppm) (Alford and Grist, 2005;
Bruckner et al., 2005; Vincent, 2004). Sogard et al. (1987) found total
seagrass shoot density is positively correlated with density of H.
zosterae. Seahorse populations were significantly correlated with water
flow, with individuals being more likely to be located in low-flow
areas, such as protected bays and lagoons, rather than high-flow areas,
such as bridge cuts (Bruckner et al., 2005). The species is described
as occurring predominantly in Florida's estuaries, but is said to be
``more abundant'' in south Florida and the Florida Keys. According to
Bruckner et al. (2005), the dwarf seahorse does not appear to be common
in many areas in the Gulf of Mexico, west of Florida.
Analysis of the Petition
We evaluated whether the petition presented the information
indicated in 50 CFR 424.14(b)(2). The petition states the
administrative measures recommended, and provides the scientific and
common name of the species. The dwarf seahorse is taxonomically
classified as a species and thus is an eligible entity for listing
under the ESA. The petition includes a detailed narrative justification
for the recommended measure, including some information on numbers of
the species, historical geographic occurrences of the species, and
threats faced by the species (see summary below). The petition provides
some information relevant to the status of the species. The petition
includes supporting references and documentation. Therefore, we
conclude the petition meets the requirements of 50 CFR 424.14(b)(2). A
detailed description of their narrative justification follows.
According to the petitioner, at least four of the five causal
factors in section 4(a)(1) of the ESA are adversely affecting the
continued existence of the dwarf seahorse, specifically: (A) Present or
threatened destruction, modification, or curtailment of its habitat or
range; (B) overutilization for commercial, recreational, scientific, or
educational purposes; (D) inadequacy of existing regulatory mechanisms;
and (E) other natural or manmade factors affecting its continued
existence. In the following sections, we use the information presented
in the petition and in our files to determine whether the petitioned
action may be warranted.
[[Page 26481]]
Information on Extinction Risk and Species Status
Information on extinction risk and species status in the petition
includes references cited in support of the conclusion that the dwarf
seahorse has declined or is declining, several risk classifications by
governmental and non-governmental organizations, and discussion of life
history and demographic characteristics that make the species
intrinsically vulnerable to decline, particularly in conjunction with
threats and impacts such as habitat loss.
The petitioner characterizes H. zosterae as numerically low in
abundance where it occurs, and describes numerous studies as indicating
the species' population trend is declining. In addition, the petitioner
states that a declining population trend can be inferred from loss of
seagrass habitats, because the species is a habitat generalist. The
petitioner cites various surveys and studies that indicate that dwarf
seahorse populations have declined in many estuarine and bay systems
throughout the species range. Several citations characterize the dwarf
seahorse as common, abundant, or a dominant species. However, the
petitioner believes that these characterizations are not supported,
because the number of dwarf seahorses collected was a numerically low
component of the studies and surveys. The information provided in some
of the studies is limited and it is difficult to determine whether the
sampling methodology was appropriate for dwarf seahorse collection. For
example, studies that sampled a variety of habitat types (i.e.,
seagrass, mud or sand banks, and deeper bays or channels, etc.) using a
methodology that may not be conducive for seahorse collection (e.g.,
larger mesh sizes), would likely collect few dwarf seahorses.
Therefore, the study results may not necessarily represent low
abundance or a declining population trend, but could be due to use of a
sampling method that is not conducive for surveying the species.
However, the petitioner also cites several studies that indicate that
the species is not very common or abundant throughout most of its range
(i.e., Gulf of Mexico, west of Florida). Several citations have also
documented dwarf seahorse declines in many surveyed seagrass systems in
Florida. Declining populations of the dwarf seahorse have been observed
to occur in conjunction with seagrass loss.
The petitioner cites various status classifications made by the
American Fisheries Society (AFS), International Union for Conservation
of Nature (IUCN), Florida Fish and Wildlife Conservation Commission
(FFWCC), the Nature Conservancy (TNC), the Commonwealth of Puerto Rico,
and the Commission for Environmental Cooperation to support its claim
that the dwarf seahorse should be listed as threatened or endangered
under the ESA. As discussed above, we do not give any particular weight
to classifications established by other scientific and conservation
organizations, which may or may not be based on criteria that directly
correspond to the listing standards of the ESA. However, we have
reviewed and evaluated the underlying information used to develop the
various classifications given to the dwarf seahorse by entities listed
in the petition.
The AFS designated the dwarf seahorse as ``vulnerable'' in 2000.
According to AFS, this classification is given to species that are
``(special concern) not endangered or threatened severely but at
possible risk of falling into one of these categories in the near
future.'' AFS gave the dwarf seahorse this categorization based on (1)
rarity, (2) habitat degradation, and (3) restricted habitat. AFS
provided several citations to supporting these characterizations, but
only one of them was available to us or provided by the petitioner. The
available citation, Fourqurean and Robblee (1999), analyzed ecological
changes (i.e., seagrass die-off, algal blooms, and increased turbidity)
in the Florida Bay estuary. The study examined the ecological changes
that transpired as a result of a large seagrass die-off that occurred
in Florida Bay during the late 1980s. The study noted that fish and
invertebrates inextricably associated with seagrass habitat
dramatically declined following the referenced seagrass die-off,
lending support to the AFS classification.
The petition cites the IUCN's classification of the dwarf seahorse
as ``Data Deficient,'' which the IUCN assigns to a species ``when there
is inadequate information to make a direct, or indirect, assessment of
its risk of extinction based on its distribution and/or population
status.'' The IUCN database entry for dwarf seahorse does not contain
any information directly assessing the species' population trends or
its extinction risk. However, the entry does include referenced
conclusions in support of the petition's conclusion that the species'
status may be inferable from losses of and threats to its seagrass
habitats, at least in the United States (``This species may be
particularly susceptible to decline. The information on habitat
suggests they inhabit shallow seagrass beds (Lourie et al., 1999) that
are susceptible to human degradation, as well as making them
susceptible to being caught as bycatch * * * The American Fisheries
Society (AFS) lists the United States populations of H. zosterae as
Threatened due to habitat degradation (Musick et al., 2000). While this
status may apply on a national level, we did not find information that
would justify such a listing for the species as a whole.'').
The FFWCC lists the dwarf seahorse as a Species of Greatest
Conservation Need (SGCN) in the state of Florida's Wildlife Action Plan
(FFWCC, 2005). SGCN's are defined as ``animals that are at risk or are
declining.'' The Action Plan categorizes the dwarf seahorse's
population status as low and population trend as stable. We cannot
evaluate any underlying information used to categorize the dwarf
seahorse as a SGCN because the information provided in Florida's
Wildlife Action Plan does not include species-specific information,
although the plan does also describe the status of submerged aquatic
vegetation in Florida, particularly seagrasses, as ``poor and
declining,'' ranking numerous threats to these habitats as ``very
high'' or ``high.''
TNC listed the dwarf seahorse as imperiled in their
``Identification of Priority Sites for Conservation in the Northern
Gulf of Mexico: An Ecoregional Plan'' (Beck et al., 2000). The
objective of the Ecoregional Plan was to identify biologically diverse
habitats within the northern Gulf of Mexico, defined as extending from
Anclote Key, FL to the Laguna Madre de Tamaulipas, Mexico, and to
establish high priority sites for conservation. The plan also
identified individual species as ``conservation targets'' in addition
to identification of priority habitat sites for conservation.
``Conservation target'' species were included if: ``(i) They were
imperiled and conservation of their habitats would be insufficient for
their conservation or (ii) they were declining faster than their
habitats.'' The plan identified the following species as conservation
target species, notably including several species listed under the ESA
as threatened or endangered: the dwarf seahorse, fringed pipefish,
opossum pipefish, Texas pipefish, diamondback terrapin, Gulf sturgeon,
Florida manatee, and the Kemp's ridley sea turtle. The plan was based
in part on a Geographic Information Systems database developed from
``all the readily available information on the distribution of these
[conservation] targets.''
[[Page 26482]]
In their 2009 report on Marine Ecoregions of North America, the
Commission for Environmental Cooperation categorized the dwarf seahorse
as a ``species at risk'' within the northern Gulf of Mexico (Wilkinson
et al., 2009). However, because there is no description of how the ``at
risk'' categorization was determined, we cannot further assess the
Commission for Environmental Cooperation's ``species at risk''
categorization. The petitioner also states that the dwarf seahorse is
recognized as a Species of Concern by the Commonwealth of Puerto Rico,
but provides no citation or information on this designation; we were
unable to evaluate the referenced categorization made by the
petitioner.
The petitioner describes life history characteristics generally
applicable to the genus Hippocampus that could be indicative of its
extinction risk, for which the petition provides supporting information
(Baum et al., 2003; Foster and Vincent, 2004; Lourie et al., 2004;
Masonjones et al., 2010). We believe that the dwarf seahorse's life
history characteristics in and of themselves are likely well-adapted
for the species' ecological niche. However, the petition presents
information on other threats (i.e., habitat loss and overutilization)
that may interact with these life history characteristics to increase
extinction risk. The dwarf seahorse's narrow habitat preference and low
mobility could increase the species' ecological vulnerability.
Similarly, patchy spatial distributions in combination with low
population density make a species susceptible to habitat loss or
change. The petition and references also suggest that other life
history characteristics, such as low fecundity, complex reproductive
behavior, and monogamous mating systems may also increase the species'
vulnerability. Seahorse species have complex reproductive behavior and
appear to be monogamous at least within a single breeding cycle; if
courting or pair bonds are disrupted due to removal or disturbance
during courtship or mating it may diminish the productivity within a
single breeding cycle. Low fecundity could reduce the ability for
population recovery from overexploitation of particular areas. The low
mobility and patchy distribution of dwarf seahorse suggest that the
species may be slow to recolonize depleted areas. This is particularly
true given that the dwarf seahorse is restricted to seagrasses (Alford
and Grist 2005; Lourie et al., 2004), which in some areas have declined
substantially over the course of several decades (Waycott et al.,
2009). The importance of life history characteristics in determining
responses to exploitation has been demonstrated for a number of species
(Jennings et al., 1998).
In summary, the information presented indicates that the dwarf
seahorse has a patchy distribution and is not very abundant or common
in many areas throughout its range. Declines in the dwarf seahorse
population have been documented in a number of Florida's estuaries and
bays. It is evident that the dwarf seahorse is inextricably associated
with seagrass and the inferences made about the species' declining
status due to habitat loss are supported.
The petition also includes risk classifications for the dwarf
seahorse made by other organizations; however these do not include a
specific analysis of extinction risk for the dwarf seahorse. While the
species is present on these lists, they provide no analysis of
population size and trends or other information directly addressing
whether the species faces extinction risk that is cause for concern.
However, in some of these classifications the dwarf seahorse's status
is linked to the degraded or threatened status of seagrass habitats,
which supports a similar contention made by the petition. The
petitioner presents substantial scientific or commercial information
indicating that the species' life history and demographic
characteristics make it vulnerable to decline and potential extinction
risk, particularly in conjunction with threats to the species including
loss of its habitat.
Information on Impacts and Threats to the Species
The petitioner states that impacts and threats corresponding with
four factors in section 4(a)(1) of the ESA are impacting the dwarf
seahorse. Specifically, the petitioner states that the following
factors are affecting the dwarf seahorses continued existence: (A)
Present or threatened destruction, modification, or curtailment of its
habitat or range; (B) overutilization for commercial, recreational,
scientific, or educational purposes; (D) inadequacy of existing
regulatory mechanisms; and (E) other natural or manmade factors.
The Present or Threatened Destruction, Modification, or Curtailment of
Its Habitat or Range
Information from the petition and in our files suggests that the
primary threat to the dwarf seahorse is from habitat decline. The
petitioner states that the dwarf seahorse is threatened by the loss and
degradation of seagrass habitat, which increases the species'
vulnerability. The petitioner references considerable seagrass loss
throughout the species range and especially in the northern Gulf of
Mexico which has occurred over the course of several decades, and
provides summaries of indirect and direct anthropogenic factors that
continue to impact seagrasses (oil and gas development, loss and
degradation of mangrove habitat, declining water quality, development
and human population growth, damage from vessels, trawling and global
climate change). Seagrass declines cited within the petition range from
6-90 percent (Waycott et al., 2009), depending on the timeframe,
geographic area, and system (i.e., estuary, coastal water, or bay).
In Texas, the petition cites a 90 percent decline in ``vascular
vegetation'' which occurred within the Galveston Bay system on the
upper Texas coast from 1956 to 1990 (Pulich and White, 1990). Waycott
et al. (2009) also documented a 90 percent decline in seagrass acreage
within the Galveston Bay system from 1956 to 1998. Hadley et al. (2007)
reported that nearly all seagrass beds ``disappeared from the main
parts of Galveston Bay in the 1970's'' and attributed the decline to a
variety of anthropogenic impacts, as well as natural events. The
petitioner notes that eutrophication and harmful algal blooms have
caused seagrass declines in Corpus Christi, Laguna Madre, and Baffin
Bay (An and Gardner, 2000; Breier et al., 2004). Several factors, both
natural (i.e., droughts, hurricanes, fresh water flows, etc.) and
human-induced (i.e., nutrient loading or water quality, sedimentation
caused by dredging, prop scarring caused by vessel traffic, and direct
physical disturbance), are believed to be affecting the health,
abundance, distribution, and density of seagrasses in Texas (Handley et
al., 2007; Pulich and White, 1997).
The petition provides evidence that Alabama and Mississippi have
also experienced extensive seagrass loss. Alabama documented an 82
percent decline in seagrass coverage within Mobile Bay between 1981 and
2003. Perdido Bay lost approximately 75 percent of its seagrass
coverage from 1940 to 2003. Similarly, Mississippi Sound experienced a
50 percent decline in seagrass coverage from 1992 to 2003 (Waycott et
al., 2009).
For Florida, the petitioner references a USFWS Conservation Plan
and Environmental Assessment for Pine Island, Matlacha Pass, Island
Bay, and Caloosahatchee National Wildlife Refuges, which states that
Florida has lost more than 50 percent of its seagrass
[[Page 26483]]
habitat since the 1950s (USFWS, 2010). The petition also cites the
Florida State Wildlife Action Plan's status rank for Florida's
submerged aquatic vegetation of ``poor and declining,'' and the Plan's
identification of numerous stresses to seagrass ranked as ``very high''
or ``high'' (e.g., altered water quality, habitat destruction, altered
species composition, and sedimentation) (FFWCC, 2005). The petition
references seagrass loss in northwestern Florida (e.g., Pensacola Bay,
Choctawhatchee Bay, St. Andrew Bay, and the Big Bend region) (USGS,
2004; Waycott et al., 2009). Florida's Big Bend region lost
approximately 667,184 acres of seagrass between 1984 and 1992 (USGS,
2004). The petition references several studies that report seagrass
loss in southwestern Florida's estuary and bay systems, including Tampa
Bay, Sarasota Bay, Greater Charlotte Harbor, Naples Bay, Faka Union
Bay, Fakahatchee Bay, and Florida Bay. The petition states that Tampa
Bay lost approximately 60 percent of seagrass coverage between 1879 and
2006 (Waycott et al., 2009), that seagrass in Sarasota Bay decreased
from 12,073 acres in 1950 to approximately 9,063 acres in 2001 (Waycott
et al., 2009), and that seagrass in Naples Bay decreased by 90 percent
since the 1950s (FDEP, 2010). The 2010 Florida Department of
Environmental Protection (FDEP) Environmental Assessment for Southwest
Coastal Estuaries refers to an ``ecosystem analysis'' conducted by
Carter et al. (1973) which documented that Fakahatchee Bay contained 57
percent seagrass coverage and Union Bay contained 23.1 percent seagrass
coverage in the early 1970s. Carter et al. (1973) also documented three
species of seagrasses in these areas (Halophila decipiens, H. wrightii,
and Thalassia testudinum), however the FDEP assessment cites an
unpublished 2005 study by Locker that suggests that since the 1970s
seagrass species composition in Fakahatchee Bay has been reduced to a
single species (H. decipiens) and that Faka Union Bay has lost all
seagrass cover.
The petitioner identifies oil and gas refining and the byproducts
from such activities as a specific source of ongoing impacts to
seagrass habitats. The petition references the DWH oil spill, stating
that ``a significant portion of H. zosterae's range is threatened by
pollution from the spill, which covered vast areas in the Gulf.'' The
petitioner states that oil pollution and the use of dispersants has
resulted in the direct mortality of the dwarf seahorse, the destruction
and degradation of their seagrass habitat, and contamination and
reduction of their invertebrate prey. The petition references a Project
Seahorse news release (2010) where scientists at the organization
caution that the dwarf seahorse could face extinction as a result of
the DWH oil spill, citing impacts such as direct mortality due to high
toxin levels, contamination of habitat, as well as contamination of the
species food sources. The petition cites peer-reviewed scientific
literature which supports the claim that oil pollution and the use of
dispersants can adversely affect seagrasses and fishes at all life
stages. Information was provided on the quantities of oil and methane
released into the Gulf of Mexico, as well as the amount of coastal
shoreline damaged by the DWH oil spill. The petitioner also discusses
the long-term pollution that the oil industry causes to coastal
environments in general.
The petitioner also presents arguments that the destruction of
Florida's mangrove habitats may be adversely affecting the dwarf
seahorse ``to the extent that seagrass beds are negatively affected by
the loss of mangroves, or that mangroves provide direct habitat value
for the seagrasses,'' because ``in some areas seagrass beds occur in
close association with mangroves, with mangroves protecting seagrass
beds by trapping sediments and stabilizing shorelines (Hoff et al.,
2010; Pauly and Ingles, 1999).'' However, the petition does not provide
information to characterize the extent of the association between
mangroves and seagrasses, and the petition is limited to generalized
statements of potential sources of threats to seagrasses from impacts
to mangroves. We acknowledge that mangroves in Florida have been
destroyed or degraded in large amounts over the course of decades, and
face many of the same ongoing threats of loss and degradation as do
seagrasses, discussed elsewhere in this finding.
The petition lists several other factors it identifies as
contributing to seagrass loss including declining water quality,
development and human population growth, damage from vessels, trawling,
and global climate change. As discussed above, extensive seagrass loss
has occurred throughout the Northern Gulf of Mexico over the last
several decades. The causes for these losses are many, but include
climate and water-level variations, physical removal, smothering with
sedimentation, light reduction resulting from turbidity or
phytoplankton, and increased nutrient loading (Handley et al., 2011).
Seagrasses are highly dependent on water quality and clarity for their
survival, and reduced water quality due to nutrient loading, algal
blooms, and contamination resulting from non-point source pollution,
such as storm water run-off, has been identified as a threat/stressor
to seagrass. The petition cites development and human population growth
as a factor which increases the dwarf seahorse's risk of extinction.
The petition cites Lellis-Dibble et al. (2008) as support for its
statement that human population growth affects coastal resources,
stating that ``53 percent of the current U.S. population lives in
coastal counties, creating tremendous stress on coastal resources.''
The petition references various activities that are often associated
with coastal development (i.e., dredging and channelization, vessel
prop scarring, increased water pollution, altered hydrologic and
salinity regimes), which are all also recognized to cause stress and/or
degradation to seagrass habitat. The potential consequences of threats
to the dwarf seahorse habitat are discussed above.
In summary, the petition and its references present substantial
information that indicates the present or threatened destruction,
modification, or curtailment of habitat or range may be causing or
contributing to extinction risk that is cause for concern for the dwarf
seahorse.
Overutilization for Commercial, Recreational, Scientific, or
Educational Purposes
The petitioner cites information that dwarf seahorse populations
are declining and that their life history characteristics (sparse
distribution, low population densities, low mobility, small home
ranges, slow re-colonization potential, low rates of population
increase, highly structured social and reproductive behavior) increase
their vulnerability to overexploitation, and that the demand for
seahorses in the aquarium, curio, and traditional Chinese medicine
trades is increasing, further exasperating the species' exploited
status.
Dwarf seahorses are harvested commercially to be sold and traded
live as aquarium fishes, and are also dried and sold at curio shops as
souvenirs, or processed into key chains, jewelry, ornaments,
paperweights, etc. There is also a high demand for seahorses in the
traditional Chinese medicine trade where they are believed to cure
several health disorders (Vincent, 1995). Smaller sized, bony
seahorses, such as the dwarf seahorse, are less desirable for the
purpose of traditional Chinese medicine (Lourie et al., 2004). However,
Vincent (1995) stated that ``poor quality'' seahorses are increasingly
[[Page 26484]]
susceptible to overexploitation by the traditional Chinese medicine
trade because the supplies of larger ``good quality'' seahorses are in
decline. In 2004, concerns over the international trade of seahorses
resulted in all seahorse species being protected under Appendix II of
the Convention for the International Trade in Endangered and Threatened
Species (CITES; for further discussion, see next section). A CITES
technical memorandum on the international conservation and trade of
seahorses (Bruckner et al., 2005) noted that the dwarf seahorse is one
of 17 seahorse species observed or reported to be traded. Several
publications have noted the popularity of the dwarf seahorse in the
aquarium trade (Vincent, 1996; Woods, 2001). Woods (2001) found that
the dwarf seahorse is the second most exported ornamental fish in
Florida. Koldewey et al. (2010) conducted an international review of
the seahorse aquaculture trade from 1997 to 2008 and found that 100
percent of dwarf seahorse exports were wild-caught individuals, not
captive-bred. Alford and Grist (2005) suggest that wild dwarf seahorse
populations have decreased in Florida and that the species is difficult
to locate and harvest in areas where it was once considered common.
The only seahorse commercial fishery in the United States is
located in the state of Florida. Bruckner et al. (2005) state that most
of the seahorse harvest in Florida is for the dried curio market. Dwarf
seahorses are primarily harvested in state waters as targeted catch by
divers using nets or as bycatch by fishers using trawls (e.g., in the
live-bait shrimp fishery) with some seahorse harvest conducted by seine
or dredge (Bruckner et al., 2005). A study conducted on the Marine Life
Fishery in Florida from 1990 to 1998 (Adams et al., 2001) documented a
five-fold increase in seahorse landings between 1991 and 1992 (from
14,000 harvested in 1991 to 83,700 harvested in 1992). The increased
landings primarily consisted of the dwarf seahorse. Bruckner et al.
(2005), state that 90 percent of the dwarf seahorse harvest is in
southeast Florida and the Florida Keys region and that more than 50
percent of the harvest in southwest Florida was collected by divers
from 1990 to 2003. The number of seahorses landed in Florida varied
between 1990 and 2003, from 6,000 to 111,000 individuals per year.
Approximately 91 percent of those landings were dwarf seahorses, so the
number of dwarf seahorses landed (1990-2003) ranged from 2,142 to
98,779 individuals per year (Bruckner et al., 2005). The petition
provides data on the quantities of seahorses being exported, allotted
bag limits permitted by the State of Florida, and the ways in which the
species is commercially utilized (e.g., aquarium market, curio market,
and Chinese traditional medicine trade).
Commercial harvest may be negatively affecting dwarf seahorse
populations. The petition and its supporting citations also indicate
that commercial demand for the dwarf seahorse is extensive, and that
populations in some geographic areas where they are harvested may have
declined. Therefore, based on the standards for making 90-day findings,
we accept the petition's characterizations of the information presented
and conclude that substantial information in the petition and in our
files suggest overutilization may be a factor contributing to
extinction risk for the dwarf seahorse.
Inadequacy of Existing Regulatory Mechanisms
The petitioner states that regulatory mechanisms at the
international, federal, and state level are inadequate to protect the
dwarf seahorse from commercial overharvest and trade, and inadequate to
protect its seagrass habitat from loss and degradation. As such, the
petitioner argues that inadequacy of existing regulatory mechanisms is
one of the factors causing the species to be threatened or endangered.
The petition notes that in 2004, the entire genus Hippocampus,
including the dwarf seahorse, was listed under Appendix II of CITES.
Species listed under Appendix II are those in which trade must be
controlled in order to avoid utilization incompatible with their
survival, but are not necessarily at risk of extinction. International
trade of CITES Appendix II species can take place if an export permit
is issued. Export permits are only issued if the Management Authority
of the exporting country is satisfied that the specimens were ``legally
obtained'' and the Scientific Authority of the exporting country
advises that the ``export will not be detrimental to the survival of
the species in the wild.'' The petition lists several reasons it
believes that CITES Appendix II does not effectively protect the dwarf
seahorse from overexploitation: it does not apply to seahorses that are
traded entirely within the U.S. domestic markets, not all exports are
inspected, and certification that trade is not detrimental to the
persistence of the dwarf seahorse is not possible because no
comprehensive population data is available. The petition and citations
indicate that no stock assessment has been conducted for the dwarf
seahorse.
The petitioner also states that the CITES listing is not sufficient
to protect the dwarf seahorse from illegal trade occurring in Mexico,
and cites references finding that most seahorse trade in Mexico occurs
on the black market. Mexican populations of dwarf seahorse are listed
in the NOM-059-SEMARNAT-2001 as species subject to special protection;
Mexico prohibits the intentional capture and trade of wild seahorses,
permitting only the commercialization of cultured and incidentally
caught seahorses (Lourie et al., 2004). The petitioner acknowledges
that Mexico prohibits the deliberate capture and trade of wild
seahorses and only authorizes the trade of seahorses if they are
``incidentally caught in non-selective fishing gear.'' However, the
petitioner asserts that Mexico's regulations and enforcement of those
regulations are inadequate to protect the dwarf seahorse from decline
or illegal harvest.
The petitioner also argues that other existing regulatory
mechanisms at the Federal (Magnuson-Stevens Fishery Conservation and
Management Act, National Marine Sanctuaries Act) and state level
relevant to the U.S. seahorse trade (Florida laws and regulations,
discussed below) are also inadequate to protect the species. Neither
Federal law prohibits collection of the dwarf seahorse. Florida has
regulatory mechanisms that require anyone wishing to collect or sell
dwarf seahorses to have a Saltwater Product License, a Marine Life
Endorsement, and a Restricted Species Endorsement under Florida law
(Chapter 370.021.01(2)(a)) and Administrative Code 16R-500). There is a
commercial bag limit of 400 dwarf seahorses per person or per vessel
per day (whichever is less), and a recreational bag limit of 5 dwarf
seahorses per person, per day (FL 68B-42.005), but no apparent cap on
total annual take of the species. There are no seasonal restrictions or
closures for this fishery. There does not appear to be a limit on the
number of seahorses that can be collected as bycatch, but the landings
value of all marine life bycatch must be less than $5,000 annually
(Florida Marine Fisheries Commission, 2009).
The petitioner also argues that existing regulatory measures do not
adequately protect the dwarf seahorse's seagrass habitat. The petition
references declining water quality and the physical damage (prop
scarring) caused by recreational and commercial vessels as contributing
to the decline of seagrass
[[Page 26485]]
habitat throughout the dwarf seahorse's range. The petition states that
the protections of the Florida Keys National Marine Sanctuary have not
prevented ongoing threats to seagrasses since the sanctuary's
designation. Similarly, the petition states that loss and degradation
of seagrasses is not prevented within other areas protected by the
state or federal governments. The petitioner acknowledges that federal
regulations such as the Coastal Zone Management Act provide a degree of
habitat protection, but say that despite the Act's intentions, seagrass
habitat continues to decline throughout the dwarf seahorse's range.
The petitioner also states that protection from oil pollution is
inadequate because, while the Oil Pollution Act is intended to protect
the species' habitat from spilled oil, accidental spills inevitably
occur. Finally, the petition states that regulation of greenhouse gases
is inadequate. However, the discussion does not explain how the
described potential increases in atmospheric concentrations of
CO2 that may result in the absence of adequate regulations
may result in extinction risk for the dwarf seahorse.
In summary, the petition presents substantial information
indicating that inadequacy of existing regulatory mechanisms may be
contributing to extinction risk that is cause for concern for the dwarf
seahorse, particularly in regards to regulations intended to control
harvest for domestic markets and international trade, and we will
evaluate these regulations' impacts on dwarf seahorse during the status
review. We will also evaluate whether existing regulatory mechanisms
relevant to preventing damage to seagrasses are inadequate in a manner
that contributes to extinction risk for the dwarf seahorse. Similarly,
we will evaluate whether existing regulatory mechanisms relevant to
preventing oil pollution are inadequate in a manner that contributes to
extinction risk for the dwarf seahorse.
Other Natural or Manmade Factors
The petition describes other natural or manmade factors that may be
affecting the dwarf seahorse, including life history characteristics,
bycatch mortality, noise, and unintentional and illegal fishing,
hurricanes or tropical storms, and invasive species. As described
previously, the petition provides information describing how ``life
history parameters'' in the form of complex reproductive strategies,
low population density, and patchy spatial distribution, are affecting
the species' ability to recover from habitat loss and overexploitation.
The available information indicates that the dwarf seahorse has some
life history characteristic that may increase the species'
vulnerability, in conjunction with habitat decline and overutilization.
The petitioner also suggests that the dwarf seahorse is vulnerable
to increased risk of extinction, because ``low frequency boat motor
noise negatively impacts the health, behavior, and reproductive success
of dwarf seahorses (Masonjones and Babson 2003).'' The petition cites a
single reference, Masonjones and Babson (2003), to support its
assertion that vessel noise is a threat to the dwarf seahorse. We
attempted to evaluate the referenced citation, which is an abstract
from the 17th Annual Meeting of the Society for Conservation Biology--
Book of Abstracts (2003). According to the Masonjones and Babson (2003)
abstract, dwarf seahorses were exposed to recordings of low frequency
boat motor noise (ranging from 70-110 dB and 60-600 HZ) with
``continuous'' and ``intermittent'' noise treatments, as well as
``quiet'' treatments. The abstract states that adult dwarf seahorses
exposed to ``noise conditions showed a significantly higher incidence
of gas bladder disease, behavioral differences, and had significantly
longer gestation lengths than controls. Fewer offspring were born to
parents exposed to continuous noise and the offspring were smaller and
had lower growth rates than control offspring.'' The abstract provides
minimal information, and we cannot determine whether this study was
conducted in a laboratory or in the species' natural environment,
though we assume from the limited information the study was conducted
in a laboratory. Based on information in the abstract we cannot
determine what the study's limitations were for ``continuous'' and
``intermittent'' noise exposures levels, as well as ``quiet''
treatments. Likewise, we cannot determine the intensity levels the
seahorses were exposed to or the duration of exposure time. We
recognize that dwarf seahorses in the wild are exposed to levels of low
frequency noise transmitted from vessels, but exposure levels are
likely temporary and infrequent (i.e., only when a vessel is operating
within the vicinity of a seahorse). Without additional information
(e.g., exposure duration, how noise levels tested in the laboratory
environment compare to noise levels in the natural environment, and how
noise levels may be attenuated at distances from the noise source given
water depths, turbidity, currents, and other natural factors) we cannot
conclude how the results of this study on vessel noise correspond to
impacts on wild populations. The information presented in the
referenced abstract does not constitute substantial information
indicating that low frequency vessel noise is an operative threat that
has acted or is acting on the species to the point that it is
contributing to an extinction risk of concern for the dwarf seahorse.
As described previously, bycatch of the dwarf seahorse in trawl
fisheries, specifically the live-bait trawl fishery in Florida, is a
source of commercial harvest. According to the petitioner, seahorses
are affected by nonselective fishing gear because trawling often covers
seahorse habitat and their life history characteristics render them
particularly vulnerable to overexploitation. The petitioner states that
seahorses likely experience injuries or mortality during towing and
sorting, but notes that the post-release mortality of bycaught
seahorses is unknown. The petitioner also references a study that
suggests discarded seahorses are subject to increased predation upon
release and experience deleterious effects as a result of being
bycaught (Foster and Vincent, 2004). It is conceivable that
incidentally caught seahorses that are not retained for commercial sale
could be injured or die post-release and that unintentional collection
could disrupt natural behaviors. However, as the petition notes, post-
release mortality estimates are not available for seahorses. The
available information is insufficient to indicate post-release
mortality or bycatch mortality is a threat that is contributing to an
extinction risk of concern for the dwarf seahorse. Nonetheless, as
described in the overutilization section of this finding, we will
evaluate to what extent the dwarf seahorse is affected by indirect
(i.e., bycatch) and direct commercial harvest during the status review.
Last, the petitioner asserts that unintentional and illegal
fishing, hurricanes and tropical storms, and invasive species are
``potentially threatening'' the dwarf seahorse. Broad statements about
generalized threats to the species do not constitute substantial
information that listing may be warranted. The petition does not
present information indicating that the dwarf seahorse is responding in
a negative fashion to unintentional and illegal fishing, hurricanes and
tropical storms, or invasive species. Therefore, we find that the
petition does not present substantial information to indicate that
these generalized threats are operative and have acted or acting on the
species to the point that it may
[[Page 26486]]
warrant protection under the ESA. Nonetheless, during the status review
we will research and consider all information submitted relevant to
these potential threats.
Summary of Section 4(a)(1) Factors
We conclude that the petition presents substantial scientific or
commercial information indicating that a combination of at least four
of the section 4(a)(1) factors may be causing or contributing to
extinction risk for the dwarf seahorse: present or threatened
destruction, modification, or curtailment of its habitat or range,
overutilization for commercial, recreational, scientific, or
educational purposes, inadequate existing regulatory mechanisms, and
other natural or manmade factors.
Petition Finding
After reviewing the information contained in the petition, as well
as information readily available in our files, we conclude the petition
presents substantial scientific information indicating the petitioned
action of listing the dwarf seahorse as threatened or endangered may be
warranted. In accordance with section 4(b)(3)(B) of the ESA and our
implementing regulations (50 CFR 424.14(b)(2)), we will commence a
review of the status of the dwarf seahorse and make a final
determination as to whether the petitioned action is warranted. During
our status review, we will determine whether the species is in danger
of extinction (endangered) or likely to become so in the foreseeable
future (threatened) throughout all or a significant portion of its
range, or that the species does not warrant listing under the ESA.
Information Solicited
To ensure that the status review is based on the best available
scientific and commercial data, we are soliciting information on
whether the dwarf seahorse is endangered or threatened. Specifically,
we are soliciting information in the following areas: (1) Historical
and current distribution and abundance of this species throughout its
range; (2) historical and current population status and trends; (3)
life history in marine environments; (4) curio, traditional medicine,
and aquarium trade or other trade data; (5) any current or planned
activities that may adversely impact the species; (6) historical and
current seagrass trends and status; (7) ongoing or planned efforts to
protect and restore the species and their seagrass habitats; (8)
management, regulatory, and enforcement information; and (9) any
biological information on this species. We request that all information
be accompanied by: (1) Supporting documentation such as maps,
bibliographic references, or reprints of pertinent publications; and
(2) the submitter's name, address, and any association, institution, or
business that the person represents.
References Cited
A complete list of references is available upon request from the
Protected Resources Division on NMFS Southeast Regional Office (see
ADDRESSES).
Authority
The authority for this action is the Endangered Species Act of
1973, as amended (16 U.S.C. 1531 et seq.).
Dated: April 30, 2012.
Paul Doremus,
Deputy Assistant Administrator for Operations, National Marine
Fisheries Service.
[FR Doc. 2012-10845 Filed 5-3-12; 8:45 am]
BILLING CODE 3510-22-P