Figure 3: Influence of different vital rates on the density-dependence in the population growth rate λ.
From: Demographic routes to variability and regulation in bird populations
Interspecific differences in the relative change of λ from 0.25K to K in relation to relative changes in juvenile survival rate (a), adult survival rate (b) and fecundity rate (c) over the same interval of variation in population size. The equations for the linear regression lines are y=0.68x+0.30; r2=0.74; df=1, 11; P=0.0015; y=1.22x−0.27; r2=0.81; df=1, 11; P <0.001; and y=0.30x+0.46; r2=0.11; df=1, 11; P=0.27 (not shown) for juvenile survival rate, adult survival rate and fecundity rate, respectively.
