A coupled biophysical model for the distribution of the great scallop Pecten maximus in the English Channel
|Author(s)||Le Goff Clement1, Lavaud Romain2, 6, Cugier Philippe1, Jean Fred2, Flye-Sainte-Marie Jonathan2, Foucher Eric3, Desroy Nicolas4, Fifas Spyros5, Foveau Aurelie4|
|Affiliation(s)||1 : IFREMER, Ctr Bretagne, DYNECO LEBCO, F-29280 Plouzane, France.
2 : Univ Bretagne Occidentale, Inst Univ Europeen Mer, Lab Sci Environm Marin, LEMAR UMR CNRS 6539, Rue Dumont dUrville, F-29280 Plouzane, France.
3 : IFREMER, Ctr Manche Mer du Nord, Lab Ressources Halieut, F-14520 Port En Bessin, France.
4 : IFREMER, Ctr Bretagne, Lab Environm Ressources Bretagne Nord, F-35801 Dinard, France.
5 : IFREMER, Ctr Bretagne, Lab Biol Halieut, CS 10070, F-29280 Plouzane, France.
6 : Fisheries & Oceans Canada, Gulf Fisheries Ctr, Sci Branch, POB 5030, Moncton, NB E1C 9B6, Canada.
|Source||Journal Of Marine Systems (0924-7963) (Elsevier Science Bv), 2017-03 , Vol. 167 , P. 55-67|
|WOS© Times Cited||13|
|Keyword(s)||Population dynamic model, Ecophysiological model, English Channel, Pecten maximus, Spatial distribution|
|Abstract||In this paper we used a modelling approach integrating both physical and biological constraints to understand the biogeographical distribution of the great scallop Pecten maximus in the English Channel during its whole life cycle. A 3D bio-hydrodynamical model (ECO-MARS3D) providing environmental conditions was coupled to (i) a population dynamics model and (ii) an individual ecophysiological model (Dynamic Energy Budget model). We performed the coupling sequentially, which underlined the respective role of biological and physical factors in defining P. maximus distribution in the English Channel. Results show that larval dispersion by hydrodynamics explains most of the scallop distribution and enlighten the main known hotspots for the population, basically corresponding to the main fishing areas. The mechanistic description of individual bioenergetics shows that food availability and temperature control growth and reproduction and explain how populations may maintain themselves in particular locations. This last coupling leads to more realistic densities and distributions of adults in the English Channel. The results of this study improves our knowledge on the stock and distribution dynamics of P. maximus, and provides grounds for useful tools to support management strategies.|