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Spatially synchronous extinction of species under external forcing | | R E Amritkar
; Govindan Rangarajan
; | | Date: |
30 Jun 2006 | | Journal: | Phys Rev Lett, 96 (25), 258102 | | Abstract: | More than 99% of the species that ever existed on the surface of the Earth are now extinct and their extinction on a global scale has been a puzzle. One may think that a species under an external threat may survive in some isolated locations leading to the revival of the species. Using a general model we show that, under a common external forcing, the species with a quadratic saturation term first undergoes spatial synchronization and then extinction. The effect can be observed even when the external forcing acts only on some locations provided the dynamics contains a synchronizing term. Absence of the quadratic saturation term can help the species to avoid extinction. | | Source: | PubMed, pmid16907348 | | Services: | Forum | Review | Favorites | |
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