A Stochastic Model for the Species Abundance Problem in an Ecological Community

Details A Stochastic Model for the Species Abundance Problem in an Ecological Community A Stochastic Model for the Species Abundance Problem in an Ecological Community

2004-03-04

arxiv.org/abs/q-bio/0403009v1

Phys. Rev. E. 70(1), 011916 2004

Biology

Quantitative Biology

Populations and Evolution

4 pages, 3 figures, submitted to PRE

Scientific paper

10.1103/PhysRevE.70.011916

We propose a model based on coupled multiplicative stochastic processes to understand the dynamics of competing species in an ecosystem. This process can be conveniently described by a Fokker-Planck equation. We provide an analytical expression for the marginalized stationary distribution. Our solution is found in excellent agreement with numerical simulations and compares rather well with observational data from tropical forests.

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