FN Archimer Export Format PT J TI An ecosystem approach for the assessment of fisheries impacts on marine top predators: the Bay of Biscay case study BT AF LASSALLE, Geraldine GASCUEL, Didier LE LOCH, Francois LOBRY, Jeremy PIERCE, Graham John RIDOUX, Vincent SANTOS, Maria Begona SPITZ, Jerome NIQUIL, Nathalie AS 1:1,8;2:2;3:3;4:4;5:5;6:1,6;7:7;8:1;9:1; FF 1:PDG-RBE-EMH;2:;3:;4:;5:;6:;7:;8:;9:; C1 Univ La Rochelle, CNRS, Littoral Environm & Soc, UMR 7266, F-17042 La Rochelle, France. Univ Europeenne Bretagne, UMR Ecol & Sante Eosyst, F-35042 Rennes, France. Univ Montpellier 2, IRD IFREMER, IRD, UMR Ecosyt Marins Exploite, F-34203 Sete, France. Irstea,UR EPBX, Res Inst Sci & Technol Environm & Agr, F-33612 Cestas, France. Univ Aberdeen, Sch Biol Sci, Aberdeen AB25 2TZ, Scotland. Univ La Rochelle, CNRS, Ctr Rech Mammiferes Marins, UMS 3419, F-17071 La Rochelle, France. Inst Espanol Oceanog, Ctr Oceanog Vigo, Vigo 36200, Spain. IFREMER, Nantes, France C2 UNIV LA ROCHELLE, FRANCE UEB, FRANCE UNIV MONTPELLIER, FRANCE IRSTEA, FRANCE UNIV ABERDEEN, UK CRMM, FRANCE IEO, SPAIN IFREMER, FRANCE SI NANTES SETE SE PDG-RBE-EMH IRD IN WOS Ifremer jusqu'en 2018 copubli-france copubli-p187 copubli-europe copubli-univ-france IF 2.28 TC 52 TU Centre national de la recherche scientifique Université de La Rochelle UR https://archimer.ifremer.fr/doc/00087/19855/17541.pdf LA English DT Article CR BIOMET2 BIOMET3 EVHOE 2000 EVHOE 2001 EVHOE 2002 EVHOE 2003 EVHOE 97 EVHOE 98 EVHOE 99 GASPROD 1 GASPROD 2 MICRODYN/1 MICRODYN/2 MICRODYN/3 MICRODYN/4 PEGASE 98 PEL 2000 PEL 2001 PELGAS 2002 PELGAS 2003 PELGAS 2004 PELGAS 2005 PLAGIA 6 PLAGIA1 PLAGIA2 PLAGIA3 PLAGIA4 PLAGIA5 PNOCAT 5 (GD) PNOCAT 5 (TH) BO Thalassa Thalia Gwen Drez DE ;Ecopath;ecosystem modelling;EcoTroph;fisheries impacts;marine mammals;trophic level AB A number of marine mammal populations is currently threatened by their interactions with fisheries. The present study aimed to provide insights into the severity of potential impacts of operational and biological interactions between top predators and fisheries, in the Bay of Biscay region. Our approach was to modify an Ecopath with Ecosim (EwE) model describing the overall structure and function of the ecosystem by including landings and discards of exploited stocks and estimations of the bycatch of non-target compartments. Second, a set of ecological indices and a trophic level (TL)-based model (EcoTroph, ET) were derived from the EwE model. ET was used to simulate the effects of increasing fishing pressure on the ecosystem and, more particularly, on top predators. The Bay of Biscay was demonstrated to be not far from overexploitation at the current fishing rate, this phenomenon being particularly noticeable for the highest TLs. Within the toothed cetacean community, bottlenose dolphins appeared the most sensitive to resource depletion, whereas common dolphins and harbour porpoises were most impacted by their incidental captures in fishing gears. This study provides a methodological framework to assess the impacts of fisheries on ecosystems for which EwE, or other ecosystem models, already exist. PY 2012 PD JUN SO Ices Journal Of Marine Science SN 1054-3139 PU Oxford Univ Press VL 69 IS 6 UT 000305461200001 BP 925 EP 938 DI 10.1093/icesjms/fss049 ID 19855 ER EF