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Type: Artigo de periódico
Title: Home Range Evolution And Its Implication In Population Outbreaks.
Author: Araujo, S B L
Viswanathan, G M
de Aguiar, M A M
Abstract: We investigated the phenomenon of population outbreaks in a spatial predator-prey model, and we found that pattern formation and outbreaks occur if the predators have a limited neighbourhood 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 found 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 developed 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.
Subject: Algorithms
Animal Migration
Behavior, Animal
Computer Simulation
Food Chain
Homing Behavior
Models, Statistical
Models, Theoretical
Population Dynamics
Predatory Behavior
Rights: fechado
Identifier DOI: 10.1098/rsta.2010.0270
Date Issue: 2010
Appears in Collections:Artigos e Materiais de Revistas Científicas - Unicamp

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