Implementation of the Kyoto Conference plans of action. Component 2: multispecies management. Trophic interactions in the Benguela ecosystem and their implications for multispecies management of fisheries. Some considerations for ecosystem management

administración pesquera ambiente pelágico biodiversidad biodiversity biodiversité ecología marina ecosistema ecosystems evaluación de poblaciones ícticas fishery management gestion des pêches marine ecology marine resources milieu pélagique modelos models modèle niveau trophique pelagic environment recursos marinos ressource marine stock assessment trophic levels écologie marine écosystème évaluation des stocks