The shape of ecological networks

Details The shape of ecological networks The shape of ecological networks

2001-01-16

arxiv.org/abs/nlin/0101026v1

Nonlinear Sciences

Adaptation and Self-Organizing Systems

4 pages, 2 figures

Scientific paper

We study the statistics of ecosystems with a variable number of co-evolving species. The species interact in two ways: by prey-predator relationships and by direct competition with similar kinds. The interaction coefficients change slowly through successful adaptations and speciations. We treat them as quenched random variables. These interactions determine long-term topological features of the species network, which are found to agree with those of biological systems.

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