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When a Fish is a Fish: The Economic Impacts of Escaped Farmed Fish

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  • Yajie Liu
  • Jon Olaf Olaussen
  • Anders Skonhoft

    ()
    (Department of Economics, Norwegian University of Science and Technology)

Abstract

The escape of cultured fish from a marine aquaculture facility is a type of biological invasion that may lead to a variety of potential ecological and economic effects on native fish. This paper develops a general invasive species impact model to capture explicitly both the ecological and economic effects of invasive species, especially escaped farmed fish, on native stocks and harvests. First, the possible effects of escaped farmed fish on the growth and stock size of a native fish are examined. Next, a bioeconomic model to analyze changes in yield, benefit distribution, and overall profitability is constructed. Different harvesting scenarios, such as commercial, recreational, and joint commercial and recreational fishing, are explored. The model is illustrated by a case study of the interaction between native and farmed Atlantic salmon in Norway. The results suggest that both the harvest and profitability of a native fish stock may decline after an invasion, but the total profits from the harvest of both native and farmed stocks may increase or decrease, depending on the strength of the ecological and economic parameters.

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File URL: http://www.svt.ntnu.no/iso/WP/2011/11_when_a_fish.pdf
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Bibliographic Info

Paper provided by Department of Economics, Norwegian University of Science and Technology in its series Working Paper Series with number 12011.

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Length: 37 pages
Date of creation: 07 Oct 2011
Date of revision:
Handle: RePEc:nst:samfok:12011

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  1. Barbier, Edward B., 2001. "A note on the economics of biological invasions," Ecological Economics, Elsevier, vol. 39(2), pages 197-202, November.
  2. Guttormsen, Atle G. & Kristofersson, Dadi & Nævdal, Eric, 2008. "Optimal management of renewable resources with Darwinian selection induced by harvesting," Journal of Environmental Economics and Management, Elsevier, vol. 56(2), pages 167-179, September.
  3. Pimentel, David & Zuniga, Rodolfo & Morrison, Doug, 2005. "Update on the environmental and economic costs associated with alien-invasive species in the United States," Ecological Economics, Elsevier, vol. 52(3), pages 273-288, February.
  4. John Tschirhart, 2009. "Integrated Ecological-Economic Models," Annual Review of Resource Economics, Annual Reviews, vol. 1(1), pages 381-407, 09.
  5. Hannesson, Rognvaldur, 1983. "Optimal harvesting of ecologically interdependent fish species," Journal of Environmental Economics and Management, Elsevier, vol. 10(4), pages 329-345, December.
  6. Chad Settle & Jason E Shogren, 2002. "Modeling Native-Exotic Species within Yellowstone Lake," American Journal of Agricultural Economics, Agricultural and Applied Economics Association, vol. 84(5), pages 1323-1328.
  7. Flaaten, Ola, 1991. "Bioeconomics of sustainable harvest of competing species," Journal of Environmental Economics and Management, Elsevier, vol. 20(2), pages 163-180, March.
  8. Olson, Lars J., 2006. "The Economics of Terrestrial Invasive Species: A Review of the Literature," Agricultural and Resource Economics Review, Northeastern Agricultural and Resource Economics Association, vol. 35(1), April.
  9. Lovell, Sabrina J. & Stone, Susan F. & Fernandez, Linda, 2006. "The Economic Impacts of Aquatic Invasive Species: A Review of the Literature," Agricultural and Resource Economics Review, Northeastern Agricultural and Resource Economics Association, vol. 35(1), April.
  10. Rondeau, Daniel, 2001. "Along the Way Back from the Brink," Journal of Environmental Economics and Management, Elsevier, vol. 42(2), pages 156-182, September.
  11. Richard Horan & Erwin Bulte, 2004. "Optimal and Open Access Harvesting of Multi-Use Species in a Second-Best World," Environmental & Resource Economics, European Association of Environmental and Resource Economists, vol. 28(3), pages 251-272, July.
  12. Jon Olaf Olaussen, 2005. "On the Economics of Biological Invasion: An application to recreational fishing," Working Paper Series 5905, Department of Economics, Norwegian University of Science and Technology.
  13. Schulz, Carl-Erik & Skonhoft, Anders, 1996. "Wildlife management, land-use and conflicts," Environment and Development Economics, Cambridge University Press, vol. 1(03), pages 265-280, July.
  14. Anderson, James L., 1985. "Private aquaculture and commercial fisheries: Bioeconomics of salmon ranching," Journal of Environmental Economics and Management, Elsevier, vol. 12(4), pages 353-370, December.
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