Evolution of biodiversity and sympatric speciation through competition in a unimodal distribution of resources

E. Brigatti, J.S. Sá Martins and I. Roditi

Physica A: Statistical Mechanics and its Applications, 2007, vol. 376, issue C, 378-386

Abstract: A microscopic agent-based dynamical model for diploid age-structured populations is used to study the evolution of biodiversity and sympatric speciation. The underlying ecology is represented by a unimodal distribution of resources of some width. Competition among individuals is also described by a similar distribution, and its strength is maximum for individuals with the same phenotype and decreases with distance in phenotype space as a Gaussian, with some width. These two widths define the model's phase space, in which we identify the regions where an autonomous emergence of stable biodiversity or speciation is more likely.

Date: 2007
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:376:y:2007:i:c:p:378-386

DOI: 10.1016/j.physa.2006.10.031

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