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Provedor de dados:  ArchiMer
País:  France
Título:  Relationships among fisheries exploitation, environmental conditions, and ecological indicators across a series of marine ecosystems
Autores:  Fu, Caihong
Large, Scott
Knight, Ben
Richardson, Anthony J.
Bundy, Alida
Reygondeau, Gabriel
Boldt, Jennifer
Van Der Meeren, Gro I.
Torres, Maria A
Sobrino, Ignacio
Auber, Arnaud
Travers-trolet, Morgane
Piroddi, Chiara
Diallo, Ibrahima
Jouffre, Didier
Mendes, Hugo
Borges, Maria Fatima
Lynam, Christopher P.
Coll, Marta
Shannon, Lynne J.
Shin, Yunne-jai
Data:  2015-08
Ano:  2015
Palavras-chave:  Ecological indicators
Environmental conditions
Fisheries exploitation
Marine ecosystems
Partial least squares path modeling
Resumo:  Understanding how external pressures impact ecosystem structure and functioning is essential for ecosystem-based approaches to fisheries management. We quantified the relative effects of fisheries exploitation and environmental conditions on ecological indicators derived from two different data sources, fisheries catch data (catch-based) and fisheries independent survey data (survey-based) for 12 marine ecosystems using a partial least squares path modeling approach (PLS-PM). We linked these ecological indicators to the total biomass of the ecosystem. Although the effects of exploitation and environmental conditions differed across the ecosystems, some general results can be drawn from the comparative approach. Interestingly, the PLS-PM analyses showed that survey-based indicators were less tightly associated with each other than the catch-based ones. The analyses also showed that the effects of environmental conditions on the ecological indicators were predominantly significant, and tended to be negative, suggesting that in the recent period, indicators accounted for changes in environmental conditions and the changes were more likely to be adverse. Total biomass was associated with fisheries exploitation and environmental conditions; however its association with the ecological indicators was weak across the ecosystems. Knowledge of the relative influence of exploitation and environmental pressures on the dynamics within exploited ecosystems will help us to move towards ecosystem-based approaches to fisheries management. PLS-PM proved to be a useful approach to quantify the relative effects of fisheries exploitation and environmental conditions and suggest it could be used more widely in fisheries oceanography.
Tipo:  Text
Idioma:  Inglês

Editor:  Elsevier Science Bv
Relação:  info:eu-repo/grantAgreement/EC/FP7/308392/EU//DEVOTES
Formato:  application/pdf
Fonte:  Journal Of Marine Systems (0924-7963) (Elsevier Science Bv), 2015-08 , Vol. 148 , P. 101-111
Direitos:  2015 Published by Elsevier B.V. All rights reserved.


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