Publications des scientifiques de l'IRD

Mchich R., Brochier Timothée, Auger Pierre, Brehmer Patrice. (2016). Interactions between the cross-shore structure of small pelagic fish population, offshore industrial fisheries and near shore artisanal fisheries : a mathematical approach. Acta Biotheoretica, 64 (4), p. 479-493. ISSN 0001-5342.

Titre du document
Interactions between the cross-shore structure of small pelagic fish population, offshore industrial fisheries and near shore artisanal fisheries : a mathematical approach
Année de publication
2016
Type de document
Article référencé dans le Web of Science WOS:000388960000011
Auteurs
Mchich R., Brochier Timothée, Auger Pierre, Brehmer Patrice
Source
Acta Biotheoretica, 2016, 64 (4), p. 479-493 ISSN 0001-5342
This work presents a mathematical model describing the interactions between the cross-shore structure of small pelagic fish population an their exploitation by coastal and offshore fisheries. The complete model is a system of seven ODE's governing three stocks of small pelagic fish population moving and growing between three zones. Two types of fishing fleets are inter-acting with the fish population, industrial boats, constrained to offshore area, and artisanal boats, operating from the shore. Two time scales were considered and we use aggregation methods that allow us to reduce the dimension of the model and to obtain an aggregated model, which is a four dimension one. The analysis of the aggregated model is performed. We discuss the possible equilibriums and their meaning in terms of fishery management. An interesting equilibrium state can be obtained for which we can expect coexistence and a stable equilibrium state between fish stocks and fishing efforts. Some identification parameters are also given in the discussion part of the model.
Plan de classement
Sciences fondamentales / Techniques d'analyse et de recherche [020] ; Ressources halieutiques [040]
Localisation
Fonds IRD [F B010068753]
Identifiant IRD
fdi:010068753
Contact