Summer distribution of marine mammals encountered along transects between South Africa and Antarctica during 2007 – 2012 in relation to oceanographic features

doi:10.13679/j.advps.2015.4.00265

极地研究

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Summer distribution of marine mammals encountered along transects between South Africa and Antarctica during 2007 – 2012 in relation to oceanographic features

Claude R. Joiris^{1, 2}*, Grant R.W. Humphries³ & Alain De Broyer²

¹ Laboratory for Polar Ecology (PolE), 26130 Saint-Restitut, France;
² Conservation Biology Unit, Royal Belgian Institute for Natural Sciences (RBINS), 1000 Brussels, Belgium;
³ Department of Ecology and Evolution, Stony Brook University, Stony Brook, New York, USA 11794

出版日期:1965-12-30 发布日期:1965-12-30
通讯作者: Claude R. Joiris

Summer distribution of marine mammals encountered along transects between South Africa and Antarctica during 2007 – 2012 in relation to oceanographic features

Claude R. Joiris^{1, 2}*, Grant R.W. Humphries³ & Alain De Broyer²

¹ Laboratory for Polar Ecology (PolE), 26130 Saint-Restitut, France;
² Conservation Biology Unit, Royal Belgian Institute for Natural Sciences (RBINS), 1000 Brussels, Belgium;
³ Department of Ecology and Evolution, Stony Brook University, Stony Brook, New York, USA 11794

Online:1965-12-30 Published:1965-12-30
Contact: Claude R. Joiris

摘要/Abstract

摘要： The at-sea summertime distribution of marine mammals between South Africa and Antarctica was determined along eight transects surveyed between December 2007 and January 2012. During 1930 30-minute transect counts, 1390 marine mammal individuals were attributed to 19 species: eight toothed whales (Odontoceti), six pinnipeds, and five baleen whales (Mysticeti). An additional two toothed-whale species were encountered ‘out of effort’. The four most numerous species accounted for 85% of the total number of individuals encountered: crabeater seal (Lobodon carcinophagus), humpback whale (Megaptera novaeangliae), Antarctic Minke whale (Balaenoptera bonaerensis) and fin whale (B. physalus). The distribution of these species was related to oceanographic features, such as water masses and fronts, pack ice and ice edge: These differences were statistically highly significant. Biodiversity was compared with other polar marine ecosystems.

关键词: marine mammals, at-sea distribution, Antarctica

Abstract: The at-sea summertime distribution of marine mammals between South Africa and Antarctica was determined along eight transects surveyed between December 2007 and January 2012. During 1930 30-minute transect counts, 1390 marine mammal individuals were attributed to 19 species: eight toothed whales (Odontoceti), six pinnipeds, and five baleen whales (Mysticeti). An additional two toothed-whale species were encountered ‘out of effort’. The four most numerous species accounted for 85% of the total number of individuals encountered: crabeater seal (Lobodon carcinophagus), humpback whale (Megaptera novaeangliae), Antarctic Minke whale (Balaenoptera bonaerensis) and fin whale (B. physalus). The distribution of these species was related to oceanographic features, such as water masses and fronts, pack ice and ice edge: These differences were statistically highly significant. Biodiversity was compared with other polar marine ecosystems.

Key words: marine mammals, at-sea distribution, Antarctica

Claude R. Joiris, Grant R.W. Humphries & Alain De Broyer. Summer distribution of marine mammals encountered along transects between South Africa and Antarctica during 2007 – 2012 in relation to oceanographic features[J]. 极地研究, DOI: 10.13679/j.advps.2015.4.00265.

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Summer distribution of marine mammals encountered along transects between South Africa and Antarctica during 2007 – 2012 in relation to oceanographic features

Summer distribution of marine mammals encountered along transects between South Africa and Antarctica during 2007 – 2012 in relation to oceanographic features

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