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Amplitude-dependent frequency, desynchronization, and stabilization in noisy metapopulation dynamics | | Refael Abta
; Marcelo Schiffer
; Nadav M Shnerb
; | | Date: |
2 Mar 2007 | | Journal: | Phys Rev Lett, 98 (9), 098104 | | 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. | | Source: | PubMed, pmid17359201 | | Services: | Forum | Review | Favorites | |
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