Data/hora: 01/06/2024 19:09:42

Provedor de dados: 	5	
País: 	France	
Título: 	Long-term fluctuations in bluefin tuna trap catches: are they environmentally driven?	
Autores: 	Ravier-mailly, Christelle; Fromentin, Jean-marc.	
Data: 	2003	
Ano: 	2003	
Palavras-chave: 	Thunnus thynnus; NAO; Temperature; Trap fishery; Migration.	
Resumo: 	We tested whether synchronous long-term fluctuations in Atlantic bluefin tuna (Thunnus thynnus) trap catches, collected from the ancestral Mediterranean and Atlantic trap fishery, might be related to environmental changes in NAO and/or in temperature. Spectral analyses of trap catches and temperature displayed similar spectra with peak at low frequency whereas those of the NAO exhibited a broad band spectrum. Regression analyses and tests of correlation did not reveal any clear relationship between trap catches and NAO. In contrast, long-term fluctuations in trap catches appear to be negatively and significantly related to long-term trends in temperature. Underlying processes that could explain such a relationship are discussed, with special focus on changes in migration patterns of the Atlantic bluefin tuna.	
Tipo: 	Text	
Idioma: 	Inglês	
Identificador: 	http://archimer.ifremer.fr/doc/00194/30530/28940.pdf	
Editor: 	ICCAT	
Relação: 	http://archimer.ifremer.fr/doc/00194/30530/	
Formato: 	application/pdf	
Fonte: 	Collective Volume of Scientific Papers (1021-5212) (ICCAT), 2003 , Vol. 55 , N. 3 , P. 1208-1216	
Fonte: 	ICCAT