Abundance of cetaceans in the oceanic northern Gulf of Mexico from 2003 and 2004 ship surveys
The Gulf of Mexico (GMx) is a subtropical marginal sea of the western North Atlantic Ocean with a diverse cetacean community. Ship-based, line-transect abundance surveys were conducted in oceanic waters (>200 m deep) of the northern GMx within U.S. waters (380,432 square km) during summer 2003 an...
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ftaquaticcommons:oai:generic.eprints.org:15062 2023-05-15T17:34:48+02:00 Abundance of cetaceans in the oceanic northern Gulf of Mexico from 2003 and 2004 ship surveys Mullin, Keith D. 2007-03 application/pdf http://aquaticcommons.org/15062/ http://aquaticcommons.org/15062/1/CSAR15736.pdf en eng NOAA National Marine Fisheries Service, Southeast Fisheries Science Center http://aquaticcommons.org/15062/1/CSAR15736.pdf Mullin, Keith D. (2007) Abundance of cetaceans in the oceanic northern Gulf of Mexico from 2003 and 2004 ship surveys. Pascagoula, MS, NOAA National Marine Fisheries Service, Southeast Fisheries Science Center, 27pp. Biology Environment Oceanography Monograph or Serial Issue NonPeerReviewed 2007 ftaquaticcommons 2020-02-27T09:26:46Z The Gulf of Mexico (GMx) is a subtropical marginal sea of the western North Atlantic Ocean with a diverse cetacean community. Ship-based, line-transect abundance surveys were conducted in oceanic waters (>200 m deep) of the northern GMx within U.S. waters (380,432 square km) during summer 2003 and spring 2004. Data from these surveys were pooled and minimum abundance estimates were based on 10,933 km of effort and 433 sightings of at least 17 species.The most commonly sighted species (number of groups) were pantropical spotted dolphin, Stenella attenuata (115); sperm whale, Physeter macrocephalus (85); dwarf/pygmy sperm whale, Kogia sima/breviceps (27); Risso’s dolphin, Grampus griseus (26); and bottlenose dolphin, Tursiops truncatus (26). The most abundant species (number of individuals; coefficient of variation) were S. attenuata (34,067; 0.18); Clymene dolphin, S. clymene (6,575; 0.36); T. truncatus (3,708; 0.42); and striped dolphin, S. coeruleoalba (3,325; 0.48). The only large whales sighted were P. macrocephalus (1,665; 0.20) and Bryde’s whale, Balaenoptera edeni (15; 1.98). Abundances for other species or genera ranged from 57 to 2,283 animals. Cetaceanswere sighted throughout the oceanic northern GMx, and whereas many species were widely distributed, some had more regional distributions. Compared to abundance estimates for this area based on 1996-2001 surveys, the estimate for S. attenuata was significantly smaller (P <0.05) and that for the spinner dolphin, S. longirostris, appeared much smaller. Also, P. macrocephalus estimates were based on less negatively biased estimates of group-size using 90-minute counts during 2003 and 2004. Book North Atlantic Physeter macrocephalus Sperm whale International Association of Aquatic and Marine Science Libraries and Information Centers (IAMSLIC): Aquatic Commons |
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International Association of Aquatic and Marine Science Libraries and Information Centers (IAMSLIC): Aquatic Commons |
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ftaquaticcommons |
language |
English |
topic |
Biology Environment Oceanography |
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Biology Environment Oceanography Mullin, Keith D. Abundance of cetaceans in the oceanic northern Gulf of Mexico from 2003 and 2004 ship surveys |
topic_facet |
Biology Environment Oceanography |
description |
The Gulf of Mexico (GMx) is a subtropical marginal sea of the western North Atlantic Ocean with a diverse cetacean community. Ship-based, line-transect abundance surveys were conducted in oceanic waters (>200 m deep) of the northern GMx within U.S. waters (380,432 square km) during summer 2003 and spring 2004. Data from these surveys were pooled and minimum abundance estimates were based on 10,933 km of effort and 433 sightings of at least 17 species.The most commonly sighted species (number of groups) were pantropical spotted dolphin, Stenella attenuata (115); sperm whale, Physeter macrocephalus (85); dwarf/pygmy sperm whale, Kogia sima/breviceps (27); Risso’s dolphin, Grampus griseus (26); and bottlenose dolphin, Tursiops truncatus (26). The most abundant species (number of individuals; coefficient of variation) were S. attenuata (34,067; 0.18); Clymene dolphin, S. clymene (6,575; 0.36); T. truncatus (3,708; 0.42); and striped dolphin, S. coeruleoalba (3,325; 0.48). The only large whales sighted were P. macrocephalus (1,665; 0.20) and Bryde’s whale, Balaenoptera edeni (15; 1.98). Abundances for other species or genera ranged from 57 to 2,283 animals. Cetaceanswere sighted throughout the oceanic northern GMx, and whereas many species were widely distributed, some had more regional distributions. Compared to abundance estimates for this area based on 1996-2001 surveys, the estimate for S. attenuata was significantly smaller (P <0.05) and that for the spinner dolphin, S. longirostris, appeared much smaller. Also, P. macrocephalus estimates were based on less negatively biased estimates of group-size using 90-minute counts during 2003 and 2004. |
format |
Book |
author |
Mullin, Keith D. |
author_facet |
Mullin, Keith D. |
author_sort |
Mullin, Keith D. |
title |
Abundance of cetaceans in the oceanic northern Gulf of Mexico from 2003 and 2004 ship surveys |
title_short |
Abundance of cetaceans in the oceanic northern Gulf of Mexico from 2003 and 2004 ship surveys |
title_full |
Abundance of cetaceans in the oceanic northern Gulf of Mexico from 2003 and 2004 ship surveys |
title_fullStr |
Abundance of cetaceans in the oceanic northern Gulf of Mexico from 2003 and 2004 ship surveys |
title_full_unstemmed |
Abundance of cetaceans in the oceanic northern Gulf of Mexico from 2003 and 2004 ship surveys |
title_sort |
abundance of cetaceans in the oceanic northern gulf of mexico from 2003 and 2004 ship surveys |
publisher |
NOAA National Marine Fisheries Service, Southeast Fisheries Science Center |
publishDate |
2007 |
url |
http://aquaticcommons.org/15062/ http://aquaticcommons.org/15062/1/CSAR15736.pdf |
genre |
North Atlantic Physeter macrocephalus Sperm whale |
genre_facet |
North Atlantic Physeter macrocephalus Sperm whale |
op_relation |
http://aquaticcommons.org/15062/1/CSAR15736.pdf Mullin, Keith D. (2007) Abundance of cetaceans in the oceanic northern Gulf of Mexico from 2003 and 2004 ship surveys. Pascagoula, MS, NOAA National Marine Fisheries Service, Southeast Fisheries Science Center, 27pp. |
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1766133758034968576 |