Species persistence and mean abundance as a function of their dispersal ability.

<p>On the left y-axis (continuous line) is represented the species persistence probability (proportion of replicates in which the species has survived) while the right y-axis (dashed line) shows the species mean abundances (computed only on the replicates in which the species has survived). (a) Generalist species (σ_s = 0.5) with very high adult survival rate (ψ_s = 0.95), in the presence of a low disturbance rate (T = 0.01) in an uncorrelated environment (α = 0). (b) Generalist species (σ_s = 0.5) with high adult survival rate (ψ_s = 0.5), in the presence of a medium disturbance rate (T = 0.1) in an uncorrelated environment (α = 0).