Chaos induced coherence in two independent food chains

Details Chaos induced coherence in two independent food chains Chaos induced coherence in two independent food chains

2004-08-04

arxiv.org/abs/nlin/0408008v2

Nonlinear Sciences

Chaotic Dynamics

5 pages, 5 eps figures. Accepted for publication in Phys. Rev. E

Scientific paper

10.1103/PhysRevE.72.031920

Coherence evolution of two food web models can be obtained under the stirring effect of chaotic advection. Each food web model sustains a three--level trophic system composed of interacting predators, consumers and vegetation. These populations compete for a common limiting resource in open flows with chaotic advection dynamics. Here we show that two species (the top--predators) of different colonies chaotically advected by a jet--like flow can synchronize their evolution even without migration interaction. The evolution is charaterized as a phase synchronization. The phase differences (determined through the Hilbert transform) of the variables representing those species show a coherent evolution.

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