Diversity of prey (dashed black line) and predator (grey line) communities at equilibrium with increasing immigration rates.

<p>(A) Species richness as a function of immigration rate, and (B) evenness of predator and prey communities as a function of species richness at each trophic level. Total species richness is the total number of species in the network. Error bars represent standard deviation over the 30 replicates. Parameters are as described in the methods.