Some indication of the genuinely biocentric value orientation of ethical environmentalism is indicated in what otherwise might appear to be gratuitous misanthropy. The biospheric perspective does not exempt Homo sapiens from moral evaluation in relation to the well-being of the community of nature taken as a whole. The preciousness of individual deer, as of any other specimen, is inversely proportional to the population of the species. Environmentalists, however reluctantly and painfully, do not omit to apply the same logic to their own kind. As omnivores, the population of human beings should, perhaps, be roughly twice that of bears, allowing for differences of size. A global population of more than four billion persons and showing no signs of an orderly decline presents an alarming prospect to humanists, but it is at present a global disaster (the more per capita prosperity, indeed, the more disastrous it appears) for the biotic community. If the land ethic were only a means of managing nature for the sake of man, misleadingly phrased in moral terminology, then man would be considered as having an ultimate value essentially different from that of his "resources." The extent of misanthropy in modern environmentalism thus may be taken as a measure of the degree to which it is biocentric. Edward Abbey in his enormously popular Desert Solitaire bluntly states that he would sooner shoot a man than a snake. Abbey may not be simply depraved; this is perhaps only his way of dramatically making the point that the human population has become so disproportionate from the biological point of view that if one had to choose between a specimen of Homo sapiens and a specimem [sic] of a rare even if unattractive species, the choice would be moot.
(J. Baird Callicott, "Animal Liberation: A Triangular Affair," Environmental Ethics 2 [winter 1980]: 311-38, at 326 [ footnote omitted])