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EPA's Vessel General Permit and Small Vessel General

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Natural threats<br />

The primary natural threat to smalltooth sawfish survival is the species low reproductive rate. In<br />

the face of reduced population sizes, this biological parameter means that recovery, at best, will<br />

be slow, <strong>and</strong> that catastrophic perturbations can have severer consequences to recovery.<br />

Anthropogenic threats<br />

<strong>Small</strong>tooth sawfish decline has been largely due to fisheries interaction (see NMFS 2006c for a<br />

review). The distinctive “saw” can easily become entangled in a variety of commercial <strong>and</strong><br />

recreational fishing gear, resulting in drowning or injury. Even when individuals that have been<br />

entangled are retrieved alive, individuals may be killed for curio collection of the saw, fear of<br />

injury from fisherman, or injured from the gear or h<strong>and</strong>ling during gear removal. However,<br />

additional anthropogenic impacts result from habitat loss. Destruction of mangrove habitat,<br />

dredging, trawling <strong>and</strong> filling, <strong>and</strong> loss of reef habitat have negative impacts on all life stages of<br />

smalltooth sawfish. Although a concern, pollution impacts on particularly reproductive biology<br />

are unknown. However, habitat degradation due to runoff containing pesticides, eutrophying<br />

agents, <strong>and</strong> other contaminants can also have a negative impact on smalltooth sawfish habitat.<br />

Critical habitat<br />

On September 2, 2009, critical habitat was designated for smalltooth sawfish along the central<br />

<strong>and</strong> southwest coast of Florida (74 FR 45353). Although PCEs were not identified, the<br />

mangrove <strong>and</strong> adjacent shallow euryhaline habitat are important nursery habitat for smalltooth<br />

sawfish.<br />

Sea Turtles<br />

Loggerhead sea turtle, (All DPS)<br />

Species Description <strong>and</strong> Distribution<br />

The loggerhead sea turtle has a large head <strong>and</strong> powerful jaws, which enables it to feed on hardshelled<br />

prey, such as whelks <strong>and</strong> conch. It is the most abundant sea turtle in U.S. coastal waters.<br />

It occurs throughout tropical <strong>and</strong> temperate oceans. Loggerhead nesting is confined to lower<br />

latitude temperate <strong>and</strong> subtropic zones but does not occur in tropical areas (NRC 1990b, NMFS<br />

<strong>and</strong> USFWS 1991b, Witherington et al. 2006).<br />

Listing Status<br />

In 1978, the loggerhead sea turtle was listed as threatened under the ESA (43 FR 32800). In<br />

2011, the listing was modified to include nine distinct population segments (76 FR 58868). The<br />

Northwest Atlantic Ocean DPS has a large population size (>60,000 adults). Though the nesting<br />

trend (between 1989 <strong>and</strong> 2010) is slightly negative, it is not significantly different from zero (76<br />

FR 58868). Therefore, the Northwest Atlantic Ocean DPS was listed as threatened. Critical<br />

habitat for this DPS has yet to be designated.<br />

Threats<br />

Incidental take in commercial fisheries has been the greatest source of mortality for loggerhead<br />

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