Data/hora: 07/06/2024 05:43:17

Provedor de dados: 	5	
País: 	France	
Título: 	An evaluation of changes in stock productivity and consequences for management. An example based on North Atlantic albacore Thunnus alalunga	
Autores: 	Kell, Laurence T; Fromentin, Jean-marc.	
Data: 	2011	
Ano: 	2011	
Palavras-chave: 	Thunnus alalunga; Albacore; Fisheries management; FLR; Reference points; Stationary processes; Surplus production.	
Resumo: 	Reference points are important elements of fisheries management and the supporting scientific advisory frameworks. However, fish stocks can fluctuate extensively over a large range of spatial and temporal scales independent of human exploitation and there has been a classical tendency to assume a dichotomy, i.e., that changes in fish populations are primarily attributable either to exploitation or to environmental variability. Therefore we look at variability in surplus production and examine the relative impacts of the environment and exploitation on the productivity of North Atlantic albacore (Thunnus alalunga). The analysis revealed that variations were driven by environmental effects. It was also found that substantial variations in time-series of biomass and catch could be expected even under a constant F equal to FMSY.	
Tipo: 	Text	
Idioma: 	Inglês	
Identificador: 	http://archimer.ifremer.fr/doc/00192/30282/28758.pdf	
Editor: 	ICCAT	
Relação: 	http://archimer.ifremer.fr/doc/00192/30282/	
Formato: 	application/pdf	
Fonte: 	Collective Volume of Scientific Papers (1021-5212) (ICCAT), 2011 , Vol. 66 , N. 5 , P. 1857-1866	
Fonte: 	ICCAT