A Instabilidade Causada pela Migração Dependente da Densidade em Redes de Populações Acopladas
DOI:
https://doi.org/10.5540/tema.2004.05.01.0087Abstract
Neste trabalho, analisamos os efeitos causados pela migração dependente da densidade em redes de populações acopladas (metapopulações), modelada como um sistema de n sítios discretos no tempo e no espaço. A análise é feita utilizando vizinhanças simétricas e a condição onde o modelo isolado é estável. Observamos que padrões mais irregulares e complexos aparecem de forma mais intensa quando a dinâmica local é dada pelo mapa exponencial logístico. Além disso, para este caso, determinamos a região onde a migração dependente da densidade induz padrões caóticos. Esta região cresce conforme ocorre crescimento na fração migratória máxima. Através do cálculo do espectro de Lyapunov concluímos que os padrões encontrados são caóticos classificando-os como caos espaço temporal completamente desenvolvido e supressão de caos.References
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