Shark Hunting: International Trade and the Imminent Extinction of Heterogeneous Species

Erhardt, Tobias and Weder, Rolf. (2015) Shark Hunting: International Trade and the Imminent Extinction of Heterogeneous Species. WWZ Working Papers, 2015 (07).

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Official URL: https://edoc.unibas.ch/61329/

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This paper examines the unprecedented decimation of sharks. We develop a Ricardian Gordon-Schaefer model with a continuum of heterogeneous species which are subject to combined harvesting and perfect substitutability in consumption. The model implies that slow-growing species, surviving in autarky, will be driven to extinction in an open trade regime. In the empirical analysis, we show that the model is in line with observations of shark biology and the international shark market. In particular, the likelihood of extinction turns out to be significantly greater for shark species which are part of trade in shark fins and exhibit low intrinsic growth.
Faculties and Departments:06 Faculty of Business and Economics > Departement Wirtschaftswissenschaften > Professuren Wirtschaftswissenschaften > Aussenwirtschaft und Europ. Integration (Weder)
12 Special Collections > WWZ Publications > WWZ Discussion Papers and Working Papers
UniBasel Contributors:Erhardt, Tobias and Weder, Rolf
Item Type:Working Paper
Publisher:WWZ, University of Basel
Number of Pages:28
Note:Publication type according to Uni Basel Research Database: Discussion paper / Internet publication
Identification Number:
  • handle: RePEc:bsl:wpaper:2015/07
edoc DOI:
Last Modified:07 Mar 2018 13:22
Deposited On:07 Mar 2018 13:22

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