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Department of Business and Management Science, Norwegian School of Economics (NHH) Discussion Papers, Department of Business and Management Science, Norwegian School of Economics (NHH)

No 2014/2:
Stochastic Optimization for Multispecies Fisheries in the Barents Sea

Diwakar Poudel () and Leif K. Sandal ()

Abstract: This study presents a multispecies stochastic model. The model suggests optimal fishing policy for two species in a three species predator prey ecosystem in the Barents Sea. We have employed stochastic dynamic programing to solve a three dimensional model, where catch is optimized by a multispecies feedback strategy. Application of the model in cod, capelin and herring ecosystem in the Barents Sea shows that the optimal catch for stochastic interaction model is more conservative compared to deterministic policy. Furthermore, we found that stochasticity has strong effect on optimal exploitation policy in the prey (capelin) compared to the predator (cod) species.

Keywords: Barents Sea; Ecosystem based management; Multispecies; Stochastic optimization; (follow links to similar papers)

JEL-Codes: C61; Q22; Q57; (follow links to similar papers)

30 pages, February 20, 2014

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