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Bioeconomic Analysis of Aquaculture's Impact on Wild Stocks and Biodiversity

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  • Tisdell, Clement A.

Abstract

Anderson theorizes that development of the aquaculture of a species of fish (also captured in an open-access fishery) favours the conservation of its wild stocks, if competitive market conditions prevail. However, this theory is shown to be subject to significant limitations. While this is less so within his model, it is particularly so in an extended one outlined here. The extended model allows for the possibility that aquaculture development can impact negatively on wild stocks thereby shifting the supply curve of the capture fishery, or raise the demand for the fish species subject both to aquaculture and capture. Such development can threaten wild stocks and their biodiversity. While aquaculture development could in principle have no impact on the biodiversity of wild stocks or even raise aquatic biodiversity overall, its impact in the long-term probably will be one of reducing aquatic diversity both in the wild and overall.

Suggested Citation

  • Tisdell, Clement A., 2002. "Bioeconomic Analysis of Aquaculture's Impact on Wild Stocks and Biodiversity," Economics, Ecology and Environment Working Papers 48739, University of Queensland, School of Economics.
    • Handle: RePEc:ags:uqseee:48739
    DOI: 10.22004/ag.econ.48739
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    References listed on IDEAS

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    1. Tisdell, Clem, 2003. "Socioeconomic causes of loss of animal genetic diversity: analysis and assessment," Ecological Economics, Elsevier, vol. 45(3), pages 365-376, July.
    2. Tisdell, Clement A., 2001. "Externalities, Thresholds and the Marketing of New Aquacultural Products: Theory and Examples," Economic Theory, Applications and Issues Working Papers 90468, University of Queensland, School of Economics.
    3. Timothy M. Swanson, 1994. "The International Regulation of Extinction," Palgrave Macmillan Books, Palgrave Macmillan, number 978-1-349-12985-0, December.
    4. Asche, Frank & Tveteras, Sigbjorn, 2005. "Market Interactions in Aquaculture," 95th Seminar, December 9-10, 2005, Civitavecchia, Italy 56003, European Association of Agricultural Economists.
    5. George A. Akerlof, 1970. "The Market for "Lemons": Quality Uncertainty and the Market Mechanism," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 84(3), pages 488-500.
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