Two-patch population models with adaptive dispersal: the effects of varying dispersal speeds
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The population-dispersal dynamics for predator–prey interactions and two competing species in a two patch environment are studied. It is assumed that both species (i.e., either predators and their prey, or the two competing species) are mobile and their dispersal between patches is directed to the higher fitness patch. It is proved that such dispersal, irrespectively of its speed, cannot destabilize a locally stable predator–prey population equilibrium that corresponds to no movement at all. In the case of two competing species, dispersal can destabilize population equilibrium. Conditions are given when this cannot happen, including the case of identical patches.
KeywordsCompetition Dispersal Evolution Habitat selection Ideal free distribution Predator Prey Population dynamics
Mathematics Subject Classification34D20 92D25 92D40 92D50
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