Can spatial variation alone lead to selection for dispersal?

Abstract

The question of selection on dispersal rates in a spatially varying, temporally constant environment is studied using an evolutionarily stable strategy approach. Dispersal is modelled as passive diffusion. For any dynamics leading to an equilibrium which does exhibit spatial variation, dispersal will be selected against. Hence, selection for dispersal must include other factors. Other biological implications of the results are discussed. © 1983.