Mc Hich R. auteur aut IRD Charouki N. auteur aut IRD Auger Pierre auteur aut IRD Raissi N. auteur aut IRD Ettahiri O. auteur aut IRD text journalArticle eng text/pdf born digital access This work presents a stock-effort dynamical model of a fishery subdivided on several fishing zones. The stock corresponds to a fish population moving between different zones, on which they are harvested by fishing fleets. The bio-economical model is a set of ODE's governing the fishing efforts and the stocks on the different fishing zones. We take profit from the existence of two time scales (a fast one for fish migration and fleets movements, and a slow one for fish growth and mortality and fleets revenue) to construct a reduced (aggregated) model. The aggregated model describes the global evolution of the harvested stock as well as the total fishing effort. The mathematical analysis of the model allows the optimization of the spatial distribution of the fishing effort and the identification of an efficient set of management measures, which corresponds in one hand to set an appropriate system of tax and/or subsidies, and on the other hand to control the displacement of the fleets between the fishing zones, in order to increase the total activity. (c) 2006 Elsevier B.V All rights reserved. specialized fishery model aggregation of variables optimal spatial distribution of fishing effort Management measures 040 197 3-4 274-280 2006 0304-3800 https://www.documentation.ird.fr/hor/fdi:010035764 10.1016/j.ecolmodel.2006.03.026 0304-3800 [F B010035764] https://www.documentation.ird.fr/hor/fdi:010035764 https://www.documentation.ird.fr/intranet/publi/2006/09/010035764.pdf Accès réservé (Intranet de l'IRD) IRD - Base Horizon / Pleins textes 2006-10-06 2017-08-23 fdi:010035764 fre