Data/hora: 11/06/2024 05:41:08

Provedor de dados: 	5	
País: 	France	
Título: 	Acoustic observations in the Bay of Biscay: Schooling, vertical distribution, species assemblages and behaviour	
Autores: 	Masse, Jacques.	
Data: 	1996-12	
Ano: 	1996	
Palavras-chave: 	Acoustic; Anchovy; Engraulis encrasicolus; Schooling; Pelagic; Behaviour; Bay of Biscay.	
Resumo: 	Eight acoustic surveys were carried our in the Bay of Biscay, during 1989-94, to study the distribution and abundance of anchovy (Engraulis encrasicolus, L.) in that area. Acoustic data were stored using the INES/MOVIES acquisition and processing system. Species-specific distribution patterns were confirmed through complementary sampling with a mid-water trawl. This paper summarises the combination of technical procedures used for acoustic assessments, and the results of acoustic surveys in the Bay of Biscay that pertain to the dynamics of this stock. Information is presented on the distribution and abundance of anchovy and co-occuring species, and on the movement patterns detected within the pelagic fish community, in relation to environmental conditions. A comparative analysis of the vertical distribution of echo traces revealed some species-specific preferences. Beyond the stock-assessment possibilities, experiments showed thar acoustic survey methods can provide considerable knowledge used for ecological research.	
Tipo: 	Text	
Idioma: 	Inglês	
Identificador: 	http://archimer.ifremer.fr/doc/00191/30265/28719.pdf	
Editor: 	Inst Ciencias Mar Barcelona	
Relação: 	http://archimer.ifremer.fr/doc/00191/30265/	
Formato: 	application/pdf	
Fonte: 	Scientia Marina (0214-8358) (Inst Ciencias Mar Barcelona), 1996-12 , Vol. 60 , N. Suppl.2 , P. 227-234