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Optimal management of renewable resources with Darwinian selection induced by harvesting

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  • Guttormsen, Atle G.
  • Kristofersson, Dadi
  • Nævdal, Eric

Abstract

We present a bioeconomic analysis of the optimal long-term management of a genetic resource in the presence of selective harvesting. It is assumed that individuals possessing a particular gene have a lower natural mortality rate and are more valuable to capture. Highly selective harvesting may cause such a gene to lose its fitness advantage, and hence change the evolutionary path of the species. Results indicate that in a zero-cost harvesting regime, the decision to preserve the valuable gene depends on the natural rate of selection against less valuable individuals and the interest rate. On the other hand, the decision to let the less valuable gene become a significant fraction of the genes depends only on biological parameters. If marginal costs are positive, it is never optimal to let a valuable gene become extinct. Further, for some parameter values, the system exhibits multiple equilibriums. Therefore, optimal regulation may depend on initial conditions.

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Bibliographic Info

Article provided by Elsevier in its journal Journal of Environmental Economics and Management.

Volume (Year): 56 (2008)
Issue (Month): 2 (September)
Pages: 167-179

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Handle: RePEc:eee:jeeman:v:56:y:2008:i:2:p:167-179

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Web page: http://www.elsevier.com/locate/inca/622870

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Cited by:
  1. Yajie Liu & Jon Olaf Olaussen & Anders Skonhoft, 2011. "When a Fish is a Fish: The Economic Impacts of Escaped Farmed Fish," Working Paper Series, Department of Economics, Norwegian University of Science and Technology 12011, Department of Economics, Norwegian University of Science and Technology.
  2. Anders Skonhoft & Yajie Liu & Ola H. Diserud & Kjetil Hindar, 2011. "An Ecological-Economic Model on the Effects of Interactions between Escaped Farmed and Wild Salmon (Salmo salar)," Working Paper Series, Department of Economics, Norwegian University of Science and Technology 12111, Department of Economics, Norwegian University of Science and Technology.
  3. Johannus Janmaat, 2012. "Fishing in a Shallow Lake: Exploring a Classic Fishery Model in a Habitat with Shallow Lake Dynamics," Environmental & Resource Economics, European Association of Environmental and Resource Economists, European Association of Environmental and Resource Economists, vol. 51(2), pages 215-239, February.
  4. Florian Diekert, 2012. "Growth Overfishing: The Race to Fish Extends to the Dimension of Size," Environmental & Resource Economics, European Association of Environmental and Resource Economists, European Association of Environmental and Resource Economists, vol. 52(4), pages 549-572, August.
  5. Florian Diekert & Dag Hjermann & Eric Nævdal & Nils Stenseth, 2010. "Spare the Young Fish: Optimal Harvesting Policies for North-East Arctic Cod," Environmental & Resource Economics, European Association of Environmental and Resource Economists, European Association of Environmental and Resource Economists, vol. 47(4), pages 455-475, December.

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