Amplitude-dependent frequency, desynchronization, and stabilization in noisy metapopulation dynamics

Refael Abta, Marcelo Schiffer, Nadav M. Shnerb

Research output: Contribution to journalArticlepeer-review

26 Scopus citations

Abstract

The enigmatic stability of population oscillations within ecological systems is analyzed. The underlying mechanism is presented in the framework of two interacting species free to migrate between two spatial patches. It is shown that the combined effects of migration and noise cannot account for the stabilization. The missing ingredient is the dependence of the oscillations' frequency upon their amplitude. A simple model of diffusively coupled oscillators allows the derivation of quantitative results, like the functional dependence of the desynchronization upon diffusion strength and frequency differences. The oscillations' amplitude is shown to be (almost) noise independent.

Original languageEnglish
Article number098104
JournalPhysical Review Letters
Volume98
Issue number9
DOIs
StatePublished - 2 Mar 2007

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