Data/hora: 10/06/2024 03:32:58

Provedor de dados: 	Institutional Archive of Ifreme (ArchiMer)	
País: 	France	
Título: 	Deep-sea demersal fish density estimates compared from simultaneous net catches and photography	
Autores: 	Russell, Ra; Serafy, J.	
Data: 	1986-10	
Ano: 	1986	
Palavras-chave: 	Benthos; Faune démersale; Densité de poissons; Photographies; Deep-sea; Demersal fish; Fish densities; Photographs.	
Resumo: 	The numbers of fish caught and photographed in the eastern North Atlantic (49-52°N and 10-15°W) were compared from 46 hauts, made between 1979 and 1983 using an epibenthic sledge with an ancillary camera. There were 1966 specimens captured and 258 photographed. Fish species of similar appearance were grouped to aid identification from photographs. The 20 speciesjgroups common to both gears were represented by 83.6% of the specimens captured. Although there was good correlation between the numbers, catch density was about one third of that photographed, demonstrating how much such estimates may be at variance. Larger species showed a greater discrepancy, to suggest net avoidance. A bow-wave might sweep aside less active animais. The camera also demonstrated selectivity; small and camouflaged fish were unseen, even where catches suggested a high density.	
Tipo: 	Text	
Idioma: 	Inglês	
Identificador: 	http://archimer.ifremer.fr/doc/00110/22107/19746.pdf

http://archimer.ifremer.fr/doc/00110/22107/43108.pdf

http://archimer.ifremer.fr/doc/00110/22107/	
Editor: 	Gauthier-Villars	
Formato: 	application/pdf	
Fonte: 	Oceanologica Acta (0399-1784) (Gauthier-Villars), 1986-10 , Vol. 9 , N. 4 , P. 503-508	
Fonte: 	Gauthier Villars

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