Voltar para Publicações

Home range evolution and its implication in population outbreaks

We study the phenomenon of population outbreaks in a spatial predator-prey model. We find that pattern formation and outbreaks occur if the predators have a limited neighborhood of interaction with the preys. The outbreaks can display a scale invariant power law tail, indicating self-organized criticality. We have also studied the system from an evolutionary point of view, where the predator home range is a hereditary trait subjected to mutations. We find that mutation drives the predator home range area to an optimal value where pattern formation and outbreaks are still present, but the latter are much less frequent. We develop analytical approximations using mean field and pair correlation techniques that indicate that the predation strategy is crucial for existence of this optimal home range area.

PDF

Deixe um comentário

Seu e-mail não será publicado.