Sustainability indices for exploited populations |
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Authors: | E. J. Milner-Gulland,H. Resit Ak akaya |
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Affiliation: | a Dept of Environmental Science and Technology, Imperial College London, Prince Consort Road, London, UK SW7 2BP;b Applied Biomathematics, 100 North Country Road, Setauket, NY 11733, USA |
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Abstract: | ![]() Evaluating the sustainability of hunting is key to the conservation of species exploited for bushmeat. Researchers are often hampered by a lack of basic biological data, the usual response to which is to develop sustainability indices based on highly simplified population models. However, the standard indices in the bushmeat literature do not perform well under realistic conditions of uncertainty, bias in parameter estimation, and habitat loss. Another possible approach to estimating the sustainability of hunting under uncertainty is to use Bayesian statistics, but this is mathematically demanding. Red listing of threatened species has to be carried out in extremely data-poor situations: uncertainty has been incorporated into this process in a relatively simple and intuitive way using fuzzy numbers. The current methods for estimating sustainability of bushmeat hunting also do not incorporate spatial heterogeneity. No-take areas are one management tool that can address uncertainty in a spatially explicit way. |
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Keywords: | bushmeat hunting population models fuzzy numbers precautionary principle no-take areas sustainability spatial heterogeneity red lists conservation |
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