Reference Points and Optimal Management in Stochastic Age-Structured Fisheries Models
The purpose of this article is to characterize dynamic optimal harvesting trajectories that maximize discounted utility assuming an age-structured population model, in the same line as Tahvonen (2009). The main novelty of our study is that uses as an age-structured population model the standard stochastic cohort framework applied in Virtual Population Analysis for Ϭsh stock assessment. This allows us to compare optimal harvesting in a discounted economic context with standard reference points used by Ϭsheries agencies for long term management plans (e.g. Fmsy). Our main Ϭndings are the following. First, optimal steady state is characterized and sufficient conditions that guarantees its existence and uniqueness for the general case of n cohorts are shown. It is also proved that the optimal steady state coincides with the traditional target Fmsy when the utility function to be maximized is the yield and the discount rate is zero. Second, an algorithm to calculate the optimal path that easily drives the resource to the steady state is developed. And third, the algorithm is applied to the Northern Stock of hake. Results show that management plans based exclusively on traditional reference targets as Fmsy may drive Ϭshery economic results far from the optimal.
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- Kulmala, Soile & Laukkanen, Marita & Michielsens, Catherine, 2006.
"Reconciling Economic and Biological Modeling of Migratory Fish Stocks:Optimal Management of the Atlantic Salmon Fishery in the Baltic Sea,"
11857, MTT Agrifood Research Finland.
- Kulmala, Soile & Laukkanen, Marita & Michielsens, Catherine, 2008. "Reconciling economic and biological modeling of migratory fish stocks: Optimal management of the Atlantic salmon fishery in the Baltic Sea," Ecological Economics, Elsevier, vol. 64(4), pages 716-728, February.
- Doyle, Matthew & Singh, Rajesh & Weninger, Quinn, 2006. "Fisheries Management with Stock Uncertainty and Costly Capital Adjustment," Staff General Research Papers Archive 12770, Iowa State University, Department of Economics.
- Massey, D. Matthew & Newbold, Stephen C. & Gentner, Brad, 2006. "Valuing water quality changes using a bioeconomic model of a coastal recreational fishery," Journal of Environmental Economics and Management, Elsevier, vol. 52(1), pages 482-500, July.
- Smith, Martin D. & Zhang, Junjie & Coleman, Felicia C., 2008. "Econometric modeling of fisheries with complex life histories: Avoiding biological management failures," Journal of Environmental Economics and Management, Elsevier, vol. 55(3), pages 265-280, May.
- Singh, Rajesh & Weninger, Quinn & Doyle, Matthew, 2006.
"Fisheries Management with Stock Growth Uncertainty and Costly Capital Adjustment,"
Staff General Research Papers Archive
12765, Iowa State University, Department of Economics.
- Singh, Rajesh & Weninger, Quinn & Doyle, Matthew, 2006. "Fisheries management with stock growth uncertainty and costly capital adjustment," Journal of Environmental Economics and Management, Elsevier, vol. 52(2), pages 582-599, September.
- Tahvonen, Olli, 2009. "Economics of harvesting age-structured fish populations," Journal of Environmental Economics and Management, Elsevier, vol. 58(3), pages 281-299, November.
- Nielsen, Max, 2006. "Trade liberalisation, resource sustainability and welfare: The case of East Baltic cod," Ecological Economics, Elsevier, vol. 58(3), pages 650-664, June.
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