Ecolab, Webworld and self-organisation

Russell K. Standish

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arXiv · nlin/0404011

Ecolab, Webworld and self-organisation

Russell K. Standish

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Abstract

Ecolab and Webworld are both models of evolution produced by adding evolution to ecological equations. They differ primarily in the form of the ecological equations. Both models are self-organised to a state where extinctions balance speciations. However, Ecolab shows evidence of this self-organised state being critical, whereas Webworld does not. This paper examines the self-organised states of these two models and suggest the likely cause of the difference. Also the lifetime distribution for a mean field version of Ecolab is computed, showing that the fat tail of the distribution is due to coevolutionary adaption of the species.

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Russell K. Standish. 2004-04-06. Ecolab, Webworld and self-organisation. https://arxiv.org/abs/nlin/0404011

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