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Provedor de dados:  ArchiMer
País:  France
Título:  Distribution, encounter rates, and habitat characteristics of toothed cetaceans in the Bay of Biscay and adjacent waters from platform-of-opportunity data
Autores:  Kiszka, Jeremy
Macleod, Kelly
Van Canneyt, Olivier
Walker, Dylan
Ridoux, Vincent
Data:  2007-07
Ano:  2007
Palavras-chave:  Toothed cetaceans
Platforms of opportunity
Habitat characteristics
English Channel
Encounter rate
Bay of Biscay
Bathymetric preference
Resumo:  Data on the distribution and habitat utilization of oceanic marine mammals are difficult to collect and yet such information is beneficial for many conservation and management purposes. Data collected during ferry-based cetacean surveys in the English Channel and Bay of Biscay between 1998 and 2002 were analysed to investigate the distribution, encounter rate, and habitat characteristics of toothed cetaceans there. In all, 17 873 nautical miles were surveyed, and 1008 encounters of 13 identified species, including delphinids, ziphiids, harbour porpoise, and sperm whale, were recorded. The common dolphin was the commonest species, followed in decreasing occurrence by striped and bottlenose dolphins, pilot whale, harbour porpoise, Cuvier's beaked whale, and sperm whales. The distribution of harbour porpoises was restricted to the shallow waters of the western English Channel. Common and bottlenose dolphins were distributed mainly over the continental shelf, although there were some encounters along the shelf edge and in the open ocean. Striped dolphins and pilot whales were sighted in oceanic waters in the central and southern Bay of Biscay. Cuvier's beaked whales and sperm whales were recorded in the deep oceanic waters of the southern Bay of Biscay. Bathymetry clearly plays a significant role in the distribution and habitat partitioning of toothed cetaceans in the region.
Tipo:  Text
Idioma:  Inglês

Editor:  Oxford university press
Formato:  application/pdf
Fonte:  ICES Journal of Marine Science (1054-3139) (Oxford university press), 2007-07 , Vol. 64 , N. 5 , P. 1033-1043
Direitos:  2007 ICES/CIEM

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