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Cetacean visual observations using line-transect survey methods onboard the NOAA Ship Gordon Gunter (GU) in the Gulf of Mexico (survey GU0302) from 2003-06-14 to 2003-08-17. (NCEI Accession 0294561)

The U.S. National Marine Fisheries Service (NMFS) is required to prepare an annual Stock Assessment Report (SAR) for each marine mammal stock to update abundance, stock structure, maximum net productivity, human-caused mortality, potential biological removal (PBR), and status. In the summer of 2003, the Southeast Fisheries Science Center (SEFSC) conducted a marine mammal survey in the northern Gulf of Mexico (GMx). Operations occurred in the waters from 200 m deep seaward to the Exclusive Economic Zone (EEZ) from Brownsville, Texas east into the Straights of Florida. The survey was designed using ship-based, line-transect methods in which experienced marine mammal observers visually located marine mammals, identified the species (to the lowest taxonomic level possible) and counted the number of whales and dolphins sighted along predetermined tracklines. A sighting constitutes a group of marine mammals (whales and dolphins) seen at the same location and time. This dataset includes marine mammal visual observation data and effort points with surveying conditions that can be used in abundance and density modeling per visual line-transect survey protocols. This dataset also includes opportunistic marine mammal photographs and information on biopsy samples collected during the survey.

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Updated: 2024-08-20
Metadata Last Updated: 2024-08-06T09:52:14.325Z
Date Created: N/A
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Title Cetacean visual observations using line-transect survey methods onboard the NOAA Ship Gordon Gunter (GU) in the Gulf of Mexico (survey GU0302) from 2003-06-14 to 2003-08-17. (NCEI Accession 0294561)
Description The U.S. National Marine Fisheries Service (NMFS) is required to prepare an annual Stock Assessment Report (SAR) for each marine mammal stock to update abundance, stock structure, maximum net productivity, human-caused mortality, potential biological removal (PBR), and status. In the summer of 2003, the Southeast Fisheries Science Center (SEFSC) conducted a marine mammal survey in the northern Gulf of Mexico (GMx). Operations occurred in the waters from 200 m deep seaward to the Exclusive Economic Zone (EEZ) from Brownsville, Texas east into the Straights of Florida. The survey was designed using ship-based, line-transect methods in which experienced marine mammal observers visually located marine mammals, identified the species (to the lowest taxonomic level possible) and counted the number of whales and dolphins sighted along predetermined tracklines. A sighting constitutes a group of marine mammals (whales and dolphins) seen at the same location and time. This dataset includes marine mammal visual observation data and effort points with surveying conditions that can be used in abundance and density modeling per visual line-transect survey protocols. This dataset also includes opportunistic marine mammal photographs and information on biopsy samples collected during the survey.
Modified 2024-08-06T09:52:14.325Z
Publisher Name N/A
Contact N/A
Keywords 0294561 , biological data , cetacean , dolphins , MARINE MAMMALS , MARINE SPECIES INVENTORY , species abundance , SPECIES IDENTIFICATION , BIG EYE BINOCULARS , dart biopsy gun , Distance Sampling , line transect sampling , photograph , video camera , visual estimate , visual observation , in situ , visual estimate , visual observation , NOAA Ship Gordon Gunter , University of Miami , US DOC; NOAA; NMFS; Southeast Fisheries Science Center; Miami, FL Laboratory , US DOC; NOAA; NMFS; Southeast Fisheries Science Center; Pascagoula/Stennis, MS Laboratory , US DOC; NOAA; NMFS; Southeast Fisheries Science Center; Miami, FL Laboratory , Gulf of Mexico , oceanography , DOC/NOAA/NMFS/SEFSC > Southeast Fisheries Science Center, National Marine Fisheries Service, NOAA, U.S. Department of Commerce , EARTH SCIENCE > BIOLOGICAL CLASSIFICATION , EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > ANIMALS/VERTEBRATES > MAMMALS > CETACEANS , EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > ANIMALS/VERTEBRATES > MARINE MAMMALS , EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > ANIMALS/VERTEBRATES > MARINE MAMMALS > DOLPHINS , SIGHTING , atmospheric/ocean indicators , baleen whales , endangered species , indicator species , population abundance , species distribution , species/population interactions , toothed whales , Atlantic spotted dolphin , Beaked whales , Beaked whales of the genus Mesoplodon , Cetacean (large) , Cetacean (small) , Clymene dolphin , Common bottlenose dolphin , Common bottlenose or Atlantic spotted dolphin , Cuvier's beaked whale , Delphinidae , Dolphins of the genus Stenella , False killer whale , Melon-headed whale , Pantropical spotted dolphin , Pilot whales , Pygmy killer whale , Pygmy or Dwarf sperm whale , Risso's dolphin , Rough-toothed dolphin , Sperm whale , Spinner dolphin , Striped dolphin , Toothed whales , Cetacea , Delphinidae , Feresa attenuata , Globicephala , Grampus griseus , Kogia , Mesoplodon , Odontoceti , Peponocephala electra , Physeter macrocephalus , Pseudorca crassidens , Stenella , Stenella attenuata , Stenella clymene , Stenella coeruleoalba , Stenella frontalis , Stenella longirostris , Steno bredanensis , Tursiops truncatus , Tursiops truncatus or Stenella frontalis , Ziphiidae , Ziphius cavirostris , BIG EYE BINOCULARS , Dart Biopsy Gun , Distance Sampling , Line Transect Sampling , VIDEO CAMERA > VIDEO CAMERA , VISUAL OBSERVATIONS > VISUAL OBSERVATIONS , SHIPS , Ships , GORDON GUNTER (call sign: WTEO, ICES code: 33GG, 1998) , OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN > GULF OF MEXICO , environment , oceans , biota
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