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1 February 2001 DIVERGENT EVOLUTION OF DISPERSAL IN A HETEROGENEOUS LANDSCAPE
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Abstract

The evolution of dispersal is investigated in a landscape of many patches with fluctuating carrying capacities and spatial heterogeneity in temporal fluctuations. Although asynchronous temporal fluctuations select for dispersal, spatial heterogeneity in the distribution of fluctuating environmental variables selects against it. We find evolutionary branching in dispersal rate leading to the evolutionarily stable coexistence of a high- and a low-dispersal phenotype. We study how the opposing forces of selection for and against dispersal change with the relative size and the environmental qualities of the source and sink habitats. Our results suggest that the evolution of dispersal dimorphism could be a first step towards speciation and local adaptation.

Andrea Mathias, Éva Kisdi, and Isabelle Olivieri "DIVERGENT EVOLUTION OF DISPERSAL IN A HETEROGENEOUS LANDSCAPE," Evolution 55(2), 246-259, (1 February 2001). https://doi.org/10.1554/0014-3820(2001)055[0246:DEODIA]2.0.CO;2
Received: 8 October 1999; Accepted: 1 August 2000; Published: 1 February 2001
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