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Co-viability modelling and the ecosystem approach to fisheries management

Luc Doyen (), Christophe Béné (), Olivier Thébaud (), Fabian Blanchard () and Vincent Martinet
Additional contact information
Christophe Béné: WorldFish Center, Regional Offices - Africa and West-Asia Programme
Olivier Thébaud: AMURE - Aménagement des Usages des Ressources et des Espaces marins et littoraux - Centre de droit et d'économie de la mer - IFREMER - Institut Français de Recherche pour l'Exploitation de la Mer - UBO - Université de Brest - IUEM - Institut Universitaire Européen de la Mer - IRD - Institut de Recherche pour le Développement - INSU - CNRS - Institut national des sciences de l'Univers - UBO - Université de Brest - CNRS - Centre National de la Recherche Scientifique - CNRS - Centre National de la Recherche Scientifique, DEM - Département d'Economie Maritime - IFREMER - Institut Français de Recherche pour l'Exploitation de la Mer
Fabian Blanchard: EME - UMR 212 EME "écosystèmes marins exploités" - UM - Université de Montpellier - IFREMER - Institut Français de Recherche pour l'Exploitation de la Mer - IRD - Institut de Recherche pour le Développement

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Abstract: The ecosystem approach for fisheries advocates an integrated management of marine resources that promotes both conservation and sustainable use in an equitable way. Co-viability is proposed here as a relevant modelling framework to deal with the analysis and exploration of scenarios in line with such an ecosystem approach. Co-viability analysis does not strive to determine optimal or steady-state paths for the joint dynamics of resources and exploitation, but rather aims at maintaining the trajectories of systems within satisfying normative bounds that mix ecological and social requirements. Hence the approach offers a multicriteria perspective and provides ways to analyse the vulnerability of social-ecological system dynamics. Conceptual links to Population Viability Analysis and conservation biology are strong. Moreover it is closely related to the Maximin or Rawlsian approach, which provides important insights regarding intergenerational equity. Examples inspired from the Bay of Biscay fisheries illustrate the proposed approach.

Date: 2008-07-08
Note: View the original document on HAL open archive server: https://hal.archives-ouvertes.fr/hal-00368412
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Published in International symposium on Coping with global change in marine social-ecological systems. FAO, Jul 2008, Rome, Italy

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