Marine Mammal and Sea Turtle Survey
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The Marine Mammal and Sea Turtle Survey, conducted by the Conservation Ecology Branch at the Northeast Fisheries Science Center, develops abundance and distribution models that incorporate environmental factors to better understand how protected species such as whales, dolphins, and sea turtles use our waters. The program coordinates the data collection and analysis efforts of NOAA Fisheries Northeast and Southeast Science Centers and the U.S. Fish and Wildlife Service Division of Migratory Birds. Through these efforts, we are providing enhanced data to managers and supporting conservation initiatives.
Marine Mammal and Sea Turtle Survey
공공데이터포털
The Marine Mammal and Sea Turtle Survey, conducted by the Conservation Ecology Branch at the Northeast Fisheries Science Center, develops abundance and distribution models that incorporate environmental factors to better understand how protected species such as whales, dolphins, and sea turtles use our waters. The program coordinates the data collection and analysis efforts of NOAA Fisheries Northeast and Southeast Science Centers and the U.S. Fish and Wildlife Service Division of Migratory Birds. Through these efforts, we are providing enhanced data to managers and supporting conservation initiatives.
SEAMAP Reef Fish Survey (1992 - 1997; and 2001 - 2015)
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The Southeast Fisheries Science Center Mississippi Laboratories conducts standardized fisheries independent resource surveys in the Gulf of Mexico, South Atlantic, and U.S. Caribbean to provide abundance and distribution information to support regional and international stock assessments. The reef fish survey is conducted primarily on the outer continental shelf of the Gulf of Mexico along topographic features (e.g. reefs, banks and ledges) between Brownsville, TX to the Dry Tortugas, FL. A two-stage sampling design is used with the first stage or primary sampling units being blocks 10 minutes of latitude by 10 minutes of longitude and the second stage being randomly selected sites within the blocks. The first-stage units are selected by stratified random sampling, with stratum boundaries defined by geographic region (4 regions: South Florida, Northeast Gulf, Louisiana-Texas Shelf, and South Texas), and by reef habitat area (Blocks < 20 km² reef, Blocks > 20 km² reef). Sampling is conducted using a video camera array, vertical line gear and chevron traps with approximately 400 video cameras, 400 vertical line and 100 traps conducted. The camera array consists of four housings positioned orthogonally and center mounted at a height of 51 cm above the bottom of the array. Each housing contains a pair of black-and-white Videre stereo cameras along with a color mpeg camera. Sampling of reef sites with video cameras occurs only during daylight hours, with the first gear deployment one hour after sunrise and the last gear retrieval one hour prior to sunset. Video arrays soak for 35 minutes. At sites selected for fish sampling, a chevron (or arrow) fish trap or vertical line is used to capture fish for biological samples. The chevron fish trap is constructed with 1.5-inch vinyl-clad mesh. In its greatest dimensions, the trap is 1.76 m in length, 1.52 m in width and 0.61 m in depth. A 0.4 m by 0.29 m blow out panel is placed on one side and kept closed using 7-day magnesium releases. The fish trap soaks for one hour and is baited with squid. The vertical line consists of a mainline with 10 gangions. One 8/0, 11/0 or 15/0 circle hook is attached to each gangion and baited with mackerel (Scomber scombrus). The mainline is soaked for five minutes. Most of the animals captured are measured, weighed, tagged and then released. Those individuals which are moribund or have expired are retained to collect biological data pertaining to the life history of these fishes. Habitat mapping is conducted using the SIMRAD ME70 multibeam echosounder. At each site hydrological data is collected using Conductivity Temperature Depth sensor (CTD).
PIR Marine Turtle In Water Captures & Observations
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Effective management of marine turtle data is essential to maximize their research value and enable timely population assessments and recovery monitoring. To provide such capabilities at the National Marine Fisheries Service, a comprehensive Turtle Data Processing System (TDPS, formally called Marine Turtle Data Management System) was created. The system was written in DBase III and Clipper and implemented on IBM/PC-compatible computers running under MS-DOS. As of 2003, TDPS was upgraded into Microsoft Access. The TDPS is modular, supporting data of various types. Cross-referencing and multiple-encounter analysis are enabled through a core database file of individual turtle identifications, based on uniquely-inscribed flipper tags and passive-integrative transponder tags.
Fishery-Independent Turtle Excluder Device Catch Assessment Data: Skimmer Trawl Fishery
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Skimmer trawls are utilized throughout the southeastern United States to target penaeid shrimp (Penaeidae). Because the codends of these trawls can be readily retrieved, skimmer trawls are allowed to utilize restricted tow times (55 and 75 minute, seasonally) in lieu of Turtle Excluder Device (TED) requirements as a sea turtle bycatch mitigation measure. However, observations aboard commercial vessels indicate that tow times are often exceeded. In 2013, the Southeast Fisheries Science Center Mississippi Laboratories began independent skimmer trawl TED testing aboard the NOAA vessel, RV Caretta. Testing was conducted from 2013 to 2015 on traditional commercial fishing grounds located in the internal coastal waters of Mississippi and Louisiana. The experimental design consisted of paired comparisons designed to examine shrimp catch retention and bycatch. A TED was installed in one net (treatment), while the other was left naked with no TED installed (control). The TED was switched between port and starboard nets daily to remove potential vessel side bias. Data consists of tow level data for each net (treatment vs control) for five major catch categories; shrimp, finfish, non-shrimp crustaceans, other invertebrates, and debris. Start and end locations, times, and depths were recorded for each tow along with vessel identifier, date, tow speed, TED configuration, and location of the TED (port vs starboard). Data were used to determine TED efficiency with regard to shrimp catch and bycatch reduction.
Summary of satellite tagged sea turtles at NOAA Galveston 2002-2016
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A masters level student at Texas A&M University at Galveston [TAMUG] worked for the Galveston Lab and applied satellite tags to nesting turtles. When the student finished their work and moved on, TAMUG took over the satellite nestiing project, but as a condition of the USFWS permit was TAMUG had to bring the turtle back to the NOAA Galveston Laboratory for satellite tagging so the Galveston Lab continued to document information even though they were not the ones physically collecting that information. Later turtles were documented that were moved off the beach for satellite tagging, even if they didn't receive a satellite tag. In addition the Galveston Lab continued to document each time a satellite turtle was seen, even if it was not satellite tagged.