Ecological model of extinctions
adap-org
2009-10-28 v1 Condensed Matter
Adaptation and Self-Organizing Systems
q-bio
Abstract
We present numerical results based on a simplified ecological system in evolution, showing features of extinction similar to that claimed for the biosystem on Earth. In the model each species consists of a population in interaction with the others, that reproduces and evolves in time. Each species is simultaneously a predator and a prey in a food chain. Mutations that change the interactions are supposed to occur randomly at a low rate. Extinctions of populations result naturally from the predator-prey dynamics. The model is not pinned in a fitness variable, and natural selection arises from the dynamics.
Cite
@article{arxiv.adap-org/9609001,
title = {Ecological model of extinctions},
author = {Guillermo Abramson},
journal= {arXiv preprint arXiv:adap-org/9609001},
year = {2009}
}
Comments
16 pages (LaTeX type, RevTeX style), including 6 figures in gif format. To be published in Phys. Rev. E (prob. Dic. 96)