Trade policy and ecology

摘要: Trade sanctions on product exports are often used as measures for conservation of stocks living resources. Two opposing approaches investigated. The harvest approach argues that reduce the harvest, and thus protects stock. It is shown this does not consider long run effects nor management system. investment increased price stock, making species a profitable investment. asset changes, usually increase stock in an one analysis. If wildlife competes land conclusions may be different, but still works. manager has joint several species, ambiguous, depending both interaction, profitability harvesting from each them. In case it possible to use intuitive reasoning, give distortions all simultaneously. threat extinction depends crucially unit cost depleted stocks. paper concludes trade policy too general measure resources, implicate important economic ecological