The effects of stochastic population dynamics on food web structure

Details The effects of stochastic population dynamics on food web structure The effects of stochastic population dynamics on food web structure

2008-08-28

arxiv.org/abs/0808.3947v1

Biology

Quantitative Biology

Populations and Evolution

15 pages, 11 figures, 2 diagrams

Scientific paper

We develop a stochastic, individual-based model for food web simulation which in the large-population limit reduces to the well-studied Webworld model, which has been used to successfully construct model food webs with several realistic features. We demonstrate that an almost exact match is found between the population dynamics in fixed food webs, and that the demographic fluctuations have systematic effects when the new model is used to construct food webs due to the presence of species with small populations.

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