Éditeur(s) : Oxford university press
Résumé : There is increasing evidence from previous studies, and from fishers' observations, that coastal dolphins use fishing nets as an easily accessible feeding source, damaging or depredating fish caught in the nets. This study investigates the impact of dolphin depredation on artisanal trammelnets by analysing the catch composition of 614 artisanal fishing operations in the Bonifacio Strait Natural Reserve (France). Common bottlenose dolphins (Tursiops truncatus) attacked, on average, 12.4% of the nets and damaged 8.3% of the catch. However, attacked nets were characterized by statistically significantly higher catch per unit effort than unattacked ones. Catch composition also differed significantly after dolphin attacks; bentho-pelagic fish were more represented and reef-associated fish less represented. Our results suggest that (i) dolphins are attracted by high fish densities in the fishing area and/or nets, and (ii) their attacks induce specific fish-avoidance behaviour, according to the fish position in the water column. Although dolphins depredate a small part of the catch, damage to nets, not yet assessed in this area, could weaken the benefits that reserves can provide to artisanal fisheries.
ICES Journal of Marine Science (1054-3139) (Oxford university press), 2009-05 , Vol. 66 , N. 4 , P. 699-707

Droits : 2009 ICES/CIEM. Oxford Journals
http://archimer.ifremer.fr/doc/2009/publication-6808.pdf
DOI:10.1093/icesjms/fsp036
http://archimer.ifremer.fr/doc/00000/6808/

Résumé : This report synthesizes the discussions of a workshop organized during the "Liteau II-AMP" project , a collaborative project involving scientists and MPA managers that aimed at developing diagnostic and exploratory tools for the assessment of Marine Protected Areas performance. This 2004-2006 project was funded by the Liteau program (http://www.liteau.ecologie.gouv.fr) of the French Ministry of Ecology and Sustainable Development. The workshop was organized on 30th November and 1st December at the EPHE (University of Perpignan, France). It was aimed at gathering a number of scientists and managers involved in MPA in France and in overseas French territories, in order to discuss the issue of interactions between managers and scientists in the context of MPAs. After this fruitful workshop, we felt it was useful to produce a synthesis about interactions between scientists and managers for the MPA or MPA projects present at the workshop. The topics discussed include how to interact, the degree of involvement of both sides in interactions, research versus monitoring, gaps and expectations.
Préambule : Cette synthèse s'inscrit dans le projet « Développement d'Outils Diagnostics et Exploratoires d'Aide à la Décision pour Evaluer la Performance d'Aires Marines Protégées », projet financé par le programme Lit'eau II du Ministère de l'Ecologie et du Développement Durable. L'objet de la réunion des 30 novembre et 1er décembre 2004 à l'EPHE de Perpignan était de rassembler un certain nombre de personnes impliquées dans la gestion d'Aires Marines Protégées en France et outremer, ainsi que des scientifiques concernés par la problématique des Aires Marines Protégées afin de discuter des relations et interactions entre scientifiques et gestionnaires dans ce domaine. A l'issue de cette réunion, il s'agissait d'établir un document synthétique qui ferait le point sur les interactions entre scientifiques et gestionnaires en ce qui concerne les AMP ou projets d'AMP représentés : mode de fonctionnement, degré d'implication, études plus recherche versus suivis périodiques, besoins couverts, non couverts, anticipation des évolutions en la matière. Ce document constitue une synthèse des différents éléments qui ont pu émerger des discussions de ces deux jours et des contributions -avant et après la réunion- de différents participants.

Droits : info:eu-repo/semantics/openAccess
http://archimer.ifremer.fr/doc/2005/rapport-6797.pdf
http://archimer.ifremer.fr/doc/00000/6797/