Fu C. auteur aut IRD Large S. auteur aut IRD Knight B. auteur aut IRD Richardson A.J. auteur aut IRD Bundy A. auteur aut IRD Reygondeau G. auteur aut IRD Boldt J. auteur aut IRD Van der Meeren G.I. auteur aut IRD Torres M.A. auteur aut IRD Sobrino I. auteur aut IRD Auber A. auteur aut IRD Travers-Trolet M. auteur aut IRD Piroddi C. auteur aut IRD Diallo I. auteur aut IRD Jouffre Didier auteur aut IRD Mendes H. auteur aut IRD Borges M.F. auteur aut IRD Lynam C.P. auteur aut IRD Coll Marta auteur aut IRD Shannon L.J. auteur aut IRD Shin Yunne-Jai auteur aut IRD text journalArticle eng text/pdf born digital access 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. specialized PECHE MILIEU MARIN INDICATEUR ECOLOGIQUE FONCTIONNEMENT DE L'ECOSYSTEME BIOMASSE MODELISATION GESTION DES PECHES ATLANTIQUE MEDITERRANEE 040PECHE 036MILMAR 148 101-111 2015 0924-7963 https://www.documentation.ird.fr/hor/fdi:010063847 10.1016/j.jmarsys.2015.01.004 0924-7963 [F B010063847] https://www.documentation.ird.fr/hor/fdi:010063847 https://www.documentation.ird.fr/intranet/publi/depot/2015-07-13/010063847.pdf Accès réservé (Intranet de l'IRD) IRD - Base Horizon / Pleins textes 2015-07-13 2015-11-09 fdi:010063847 fre