Spatially synchronous extinction of species under external forcing

Amritkar, R. E. ; Rangarajan, Govindan (2006) Spatially synchronous extinction of species under external forcing Physical Review Letters, 96 (25). 258102_1-258102_4. ISSN 0031-9007

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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.

Item Type:Article
Source:Copyright of this article belongs to American Physical Society.
ID Code:464
Deposited On:21 Sep 2010 10:37
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