Fig. 2.

Total population sizes of rainforest vertebrates in the AWT bioregion. (A) Distribution of total population size for 159 vertebrate species in rainforests of the AWT. The bars are empirical data, and the line shows a normal fit to these data; the empirical distribution departs only slightly from lognormal (Shapiro–Wilk W = 0.9699; P = 0.044). (B) Total population sizes of vertebrate species in relation to the degree of environmental specialization as measured by values on the first principle component derived from a factor analysis of climate specialization, climate marginality, and vegetation specialization.