Species mobility induces synchronization in chaotic population dynamics.
Phys Rev E Stat Nonlin Soft Matter Phys
; 84(3 Pt 2): 036211, 2011 Sep.
Article
em En
| MEDLINE
| ID: mdl-22060479
ABSTRACT
A prototype population dynamics model with cyclic domination of four species and empty sites is proposed for studying transition to synchronization. At the mean-field level the dynamics shows quasiperiodicity and chaos depending on the parameter values. The realization of the model on a square lattice shows that spatial restrictions and intrinsic stochasticity change the whole picture. The mean-field dynamics qualitatively remains only under global reactions, while local reactions drive the lattice to poisoning, where only some of the species survive. Nontrivial oscillatory steady states are developed if long-distance exchange is introduced due to gradual mixing with a certain probability. The mixing probability is shown to control the transition to synchronization which emerges abruptly following a phase slip scenario. Near the transition a typical intermittency crisis takes place, with phase slips becoming more infrequent as the transition is approached.
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01-internacional
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MEDLINE
Assunto principal:
Dinâmica não Linear
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Movimento
Tipo de estudo:
Health_economic_evaluation
Limite:
Animals
Idioma:
En
Revista:
Phys Rev E Stat Nonlin Soft Matter Phys
Assunto da revista:
BIOFISICA
/
FISIOLOGIA
Ano de publicação:
2011
Tipo de documento:
Article
País de afiliação:
Grécia