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Auteur (up) FU, C.; LARGE, S.; KNIGHT, B.; RICHARDSON, A.J.; BUNDY, A.; REYGONDEAU, G.; BOLDT, J.; VAN DER MEEREN, G.I.; TORRES, M.A.; SOBRINO, I.; AUBER, A.; TRAVERS-TROLET, M.; PIRODDI, C.; DIALLO, I.; JOUFFRE, D.; MENDES, H.; BORGES, M.F.; LYNAM, C.P.; COLL, M.; SHANNON, L.J.; SHIN, Y.-J. url  doi
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  Titre Relationships among fisheries exploitation, environmental conditions, and ecological indicators across a series of marine ecosystems Type Article scientifique
  Année 2015 Publication Journal of Marine Systems Revue Abrégée  
  Volume 148 Numéro Pages 101-111  
  Mots-Clés ecological indicators; environmental conditions; fisheries exploitation; marine ecosystems; partial least squares path modeling  
  Résumé 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.  
  Adresse University of Cape Town, Department of Biological Sciences, Ma-Re Marine Research Institute, Private Bag X3, Rondebosch, Cape Town 7701, South Africa  
  Auteur institutionnel Thèse  
  Editeur Elsevier Lieu de Publication Éditeur  
  Langue Langue du Résumé Titre Original  
  Éditeur de collection Titre de collection Titre de collection Abrégé  
  Volume de collection Numéro de collection Edition  
  ISSN 0924-7963 ISBN Médium  
  Région Expédition Conférence  
  Notes Approuvé pas de  
  Numéro d'Appel MARBEC @ isabelle.vidal-ayouba @ 36155 collection 1229  
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