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The interviewees included David Carruthers, James Cox, Lois Dellert, Jared Diamond, John Dick, Barry Gilbert, Monte Hummel, Sabina Jessen, Jan Kirkby, Kaaren Lewis, Allan McDonell, Kenton Miller, Wayne McCrory, Jeff McNeely, Ted Mosquin, Reed Noss, Stuart Pimm, J. Michael Scott, Daniel Simberloff, Dennis Sizemore, Merran Smith, Brian Springinotic, John Terborgh, David Tucker, Terje Vold, and Tim Wilson.
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Z. where S is the number of species, A is area, C is a constant, and Z is the power law constant; Z values range from about 0.2 to 0.5, with the higher values associated with oceanic islands and other isolates. See R. H. MacArthur and E. O. Wilson, The Theory of Island Biogeography (Princeton Univ. Press, Princeton, NJ, 1967).
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For Z = 0.3, S decreases by 50% if A is reduced by 90%. [See B. Wilcox, in Conservation Biology: An Ecological-Evolutionary Perspective, M. E. Soulé and B. M. Wilcox, Eds. (Sinauer, Sunderland, MA., 1992), pp. 95-118; M. E. Soulé, A. C. Alberts, D. T. Bolger, Oikos 63, 39 (1992); W. D. Newmark, Biol. J. Linn. Soc. 28, 83 (1986);
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We thank B. Miller, R. Noss, J. McNeely, E. Dinerstein, D. Olson, J. Terborgh, W. Newmark, and E. Wikramananayake for comments.
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