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The economics of fishing down the food chain

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This paper uses a predator–prey model to discuss the fundamental economics of fishing down the food chain. Three regimes are compared: open access, global optimization, and partial optimization of rents from each stock. If the net price of prey species increases, fishing down the food chain would indeed be a desirable effect in economic terms. Under open access, however, fishing down the food chain could occur as a result of a higher net price of species higher up in the food chain. With partial optimization, there could be less fishing down the food chain than economically desirable.

Un modèle prédateur–proie permet d'analyser les bases économiques de la pêche commerciale tout au long de la chaîne alimentaire. Trois régimes sont comparés, l'accès libre, l'optimisation globale et l'optimisation partielle des loyers pour chaque stock. Si le prix net des espèces de proies augmente, la pêche aux niveaux inférieurs de la chaîne alimentaire devient bénéfique en termes économiques. Dans un régime d'accès libre, la pêche aux niveaux inférieurs de la chaîne alimentaire pourrait, cependant, se produire en conséquence d'une augmentation des prix nets des espèces situées plus haut dans la chaîne. Dans un régime d'optimisation partielle, il pourrait y avoir moins de pêche dans les niveaux inférieurs de la chaîne alimentaire que ne l'exigerait l'économie.[Traduit par la Rédaction]

Document Type: Research Article

Publication date: May 1, 2002

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  • Published continuously since 1901 (under various titles), this monthly journal is the primary publishing vehicle for the multidisciplinary field of aquatic sciences. It publishes perspectives (syntheses, critiques, and re-evaluations), discussions (comments and replies), articles, and rapid communications, relating to current research on cells, organisms, populations, ecosystems, or processes that affect aquatic systems. The journal seeks to amplify, modify, question, or redirect accumulated knowledge in the field of fisheries and aquatic science. Occasional supplements are dedicated to single topics or to proceedings of international symposia.
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