FN Archimer Export Format PT J TI Interactions between a natural food web, shellfish farming and exotic species: The case of the Bay of Mont Saint Michel (France) BT AF ARBACH LELOUP, F. DESROY, Nicolas LE MAO, Patrick PAULY, D. LE PAPE, Olivier AS 1:1;2:2;3:2;4:3;5:1; FF 1:;2:PDG-DOP-LER-LERFBN;3:PDG-DOP-LER-LERFBN;4:;5:; C1 Agrocampus Rennes, Lab Ecol Halieut, F-35042 Rennes, France. IFREMER, Lab Cotier Environm Resources, F-35402 St Malo, France. Univ British Columbia, Ctr Fisheries, Vancouver, BC V6T 1Z4, Canada. C2 AGROCAMPUS RENNES, FRANCE IFREMER, FRANCE UNIV BRITISH COLUMBIA, CANADA SI SAINT MALO SE PDG-DOP-LER-LERFBN IN WOS Ifremer jusqu'en 2018 copubli-france copubli-int-hors-europe IF 2.072 TC 35 UR https://archimer.ifremer.fr/doc/2007/publication-2605.pdf LA English DT Article DE ;Mont Saint Michel Bay;Crepidula fornicata;invasive species;shellfish farming;trophic model;Ecopath AB To ensure sustainable uses of the coastal zone, an integrated ecosystemic approach and ecosystem models are required to frame ecological processes and evaluate environmental impacts. Here, a mass-balance trophic (Ecopath) model of the Mont Saint Michel Bay (MSMB) was developed, to analyze the bay's functioning as an ecosystem. This bay, intensively exploited by fishing and for shellfish farming, is also suffering from the proliferation of the gastropod Crepidula fornicata, an exotic species. The MSMB model has 18 compartments, from the primary producers to top predators, and emphasizes the large biomass of filter feeders. The model identified the MSMB as a highly productive ecosystem controlled largely from the bottom-up, and strongly impacted by huge biomasses of filter feeders. However, the low transfer efficiency rates imply that a large part of the primary production is not transferred upward to higher trophic levels, but is lost in high hydrodynamic exchanges and in the trophic impasse represented by a large biomass of Crepidula fornicata. PY 2008 SO Estuarine, Coastal and Shelf Science SN 0272-7714 PU Elsevier VL 76 IS 1 UT 000252791800011 BP 111 EP 120 DI 10.1016/j.ecss.2007.06.011 ID 2605 ER EF