Novel operations research methods for efficiently determining irreplaceable sites for conservation |
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Authors: | Sarah K Jacobi Charles S ReVelle Robert L Pressey Justin C Williams |
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Institution: | (1) Department of Geography and Environmental Engineering, Johns Hopkins University, 3400 North Charles Street, Baltimore, MD 21218, USA;(2) The Ecology Center, University of Queensland, St. Lucia, QLD 4072, Australia |
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Abstract: | We examine the irreplaceability of sites in the context of the species set covering problem and the maximal covering species
problem. We show that a succession of 0-1 programming problems can be solved to quickly determine the set of irreplaceable
sites. For the widely available Oregon data set, we find a general lack of trend in the number of irreplaceable sites with
the number of sites available for selection used. Moreover, we observe that irreplaceability at one level of resource may
not be a predictor of irreplaceability at a higher or a lower level of resource. Finally, we investigate the economic value
of irreplaceable sites by trial removals of those sites.
This paper is dedicated to the memory of Dr. Charles S. ReVelle. |
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Keywords: | species covering models integer programming irreplaceability |
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