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Economies of Scope in the Management of Mulitple Species Fisheries

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  • Singh, Rajesh
  • Weninger, Quinn

Abstract

This paper considers the problem of multiple-species fishery management when targeting individual species is costly and at-sea discards of fish by fishermen are unobserved by the regulator. A dynamic model is developed to balance the ecological interdependencies among multiple fish species, and the technological interdependence which captures costly targeting. Stock conditions, ecosystem interaction, technological specification, and relative prices under which at sea discards are acute are identified. Three regulatory regimes, species-specific harvest quotas, landing taxes, and revenue quotas, are contrasted against a hypothetical sole owner problem. An optimal plan under any of these regimes precludes discarding. For both very low and very high degrees of technological interdependence, first best welfare is close to that achieved through regulation. In general, landing taxes welfare dominate species-specific quota regulation; a revenue quota fares the worst.

Suggested Citation

  • Singh, Rajesh & Weninger, Quinn, 2007. "Economies of Scope in the Management of Mulitple Species Fisheries," Working Papers 7348, Iowa State University, Department of Economics.
    • Handle: RePEc:ags:genres:7348
    DOI: 10.22004/ag.econ.7348
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    File URL: https://ageconsearch.umn.edu/record/7348/files/wp070020.pdf
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    References listed on IDEAS

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    1. Boyce, John R., 1996. "An Economic Analysis of the Fisheries Bycatch Problem," Journal of Environmental Economics and Management, Elsevier, vol. 31(3), pages 314-336, November.
    2. Brown, Gardner & Berger, Brett & Ikiara, Moses, 2005. "Different property rights regimes in the Lake Victoria multiple species fishery," Environment and Development Economics, Cambridge University Press, vol. 10(1), pages 53-65, February.
    3. Flaaten, Ola, 1991. "Bioeconomics of sustainable harvest of competing species," Journal of Environmental Economics and Management, Elsevier, vol. 20(2), pages 163-180, March.
    4. Dale Squires, 1987. "Public Regulation and the Structure of Production in Multiproduct Industries: An Application to the New England Otter Trawl Industry," RAND Journal of Economics, The RAND Corporation, vol. 18(2), pages 232-247, Summer.
    5. Turner, Matthew A., 1997. "Quota-Induced Discarding in Heterogeneous Fisheries," Journal of Environmental Economics and Management, Elsevier, vol. 33(2), pages 186-195, June.
    6. Diewert, W. E., 1973. "Functional forms for profit and transformation functions," Journal of Economic Theory, Elsevier, vol. 6(3), pages 284-316, June.
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    Cited by:

    1. Weninger, Quinn, 2008. "Individual fishing quotas in the eastern Gulf of Mexico grouper fishery: fleet restructuring, effort reduction and cost savings," ISU General Staff Papers 200805150700001163, Iowa State University, Department of Economics.

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