La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Managing Baltic Sea fisheries under contrasting production and predation regimes: Ecosystem model analyses
Auteurs :	Sture Hansson, Auteur ; Olle Hjerne, Auteur ; Chris Harvey, Auteur ; James F. Kitchell, Auteur ; Sean P. Cox, Auteur ; Timothy E. Essington, Auteur
Type de document :	Article
Dans :	AMBIO (36(2-3) APR 2007)
Article en page(s) :	265-271
Langues:	Anglais
Résumé :	Based on an earlier published ecosystem model, we have explored possible effects of different management scenarios for the Baltic Sea. The scenarios include an oligotrophication of the system, a drastic increase in the number of seals, and changes in the fishery management. From these simulations we conclude that fisheries, seals, and eutrophication all have strong and interacting impacts on the ecosystem. These interactions call for integrated management. The modelling highlights the potential for conflicts among management mandates such as flourishing fisheries, rebuilt seal populations, and substantially reduced eutrophication. The results also suggest that fisheries management reference points have to be adjusted in response to changes in the presence of natural predators or ecosystem productivity.

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