Periodicity of mass extinctions without an extraterrestrial cause
arXiv:cond-mat/0411729 · doi:10.1103/PhysRevE.71.052902
Abstract
We study a lattice model of a multi-species prey-predator system. Numerical results show that for a small mutation rate the model develops irregular long-period oscillatory behavior with sizeable changes in a number of species. The periodicity of extinctions on Earth was suggested by Raup and Sepkoski but so far is lacking a satisfactory explanation. Our model indicates that this is a natural consequence of the ecosystem dynamics, not the result of any extraterrestrial cause.
4 pages, accepted in Phys.Rev. E
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- Computational modelling of evolution: ecosystems and language