Katie McShane

While holist views such as ecocentrism have considerable intuitive appeal, arguing for the moral considerability of ecological wholes such as ecosystems has turned out to be a very difficult task. In the environmental ethics literature, individualist biocentrists have persuasively argued that individual organisms—but not ecological wholes—are properly regarded as having a good of their own . In this paper, I revisit those arguments and contend that they are fatally flawed. The paper proceeds in five parts. First, I consider some problems brought about by climate change for environmental conservation strategies and argue that these problems give us good pragmatic reasons to want a better account of the welfare of ecological wholes. Second, I describe the theoretical assumptions from normative ethics that form the background of the arguments against holism. Third, I review the arguments given by individualist biocentrists in favour of individualism over holism. Fourth, I review recent work in the philosophy of biology on the units of selection problem, work in medicine on the human biome, and work in evolutionary biology on epigenetics and endogenous viral elements. I show how these developments undermine both the individualist arguments described above as well as the distinction between individuals and wholes as it has been understood by individualists. Finally, I consider five possible theoretical responses to these problems.

Most ethicists agree that at least some nonhumans have interests that are of direct moral importance. Yet with very few exceptions, both climate ethics and climate policy have operated as though only human interests should be considered in formulating and evaluating climate policy. In this paper I argue that the anthropocentrism of current climate ethics and policy cannot be justified. I first describe the ethical claims upon which my analysis rests, arguing that they are no longer controversial within contemporary ethics. Next, I review work in climate ethics and policy, demonstrating the absence of consideration of nonhuman interests in both domains. Finally, I consider five possible justifications for omitting nonhuman interests in the evaluation climate policy options, arguing that none of these arguments succeeds.