ENDANGERED SPECIES AND NATURAL RESOURCE EXPLOITATION: EXTINCTION VS. COEXISTENCE

Natural Resource Modelling - Tập 8 Số 4 - Trang 389-413 - 1994
Yacov Tsur1,2, Amos Zemel3
1Department of Agricultural Economics and Management, The Hebrew University of Jerusalem, P.O. Box 12, Rehovot 76100, Israel
2Department of Applied Economics, University of Minnesota, 1994 Buford Avenue, St. Paul, MN, 55108 U.S.A.
3Center for Energy and Environmental Physics The Jacob Blaustein Institute for Desert Research, Ben Gurion University of the Negev, Sede Boqer Campus, 84990 Israel

Tóm tắt

A model of renewable resource exploitation under event uncertainty is formulated. The model is applied to analyze the situation in which excessive water diversion for human needs can lead to the extinction of an animal population. Special attention is given to uncertainty regarding the conditions that lead to extinction. The manner in which the potential benefit foregone due to the species' extinction (the “extinction penalty”) induces more conservative exploitation policies is studied in detail. When the extinction penalty is ignored, the optimal policy is to drive the resource stock to a particular equilibrium level from any initial state. When the extinction penalty is accounted for and the conditions that lead to extinction are not fully understood (i.e., involve uncertainty), an interval of equilibrium states is identified, which depends on the penalty and on the immediate extinction risk.

Từ khóa


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Thông tin
Thông tin xuất bản

Natural Resource Modelling

Tập 8 Số 4

389-413

Thông tin tác giả