Figure 1. Interspecific differences in population variability in relation to environmental stochasticity in different vital rates.

The coefficient of variation in the stationary distribution of population sizes around the carrying capacity K, assuming a logistic model of density regulation, in relation to environmental stochasticity in juvenile survival rate (a), adult survival rate (b) and number of fledglings produced (c). The equations for the linear regression lines are y=0.14x+0.16; r²=0.68; df=1, 11; P < 0.001; y=0.14x+0.16; r²=0.41; df=1, 11; P <0.01; and y=0.13x+0.22; r²=0.26; df=1, 11; P=0.073 (not shown) for juvenile survival rate, adult survival rate and fledgling production, respectively.