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. 2001 May 7;86(19):4418-21.
doi: 10.1103/PhysRevLett.86.4418.

Shape of ecological networks

M Lässig  1 , U Bastolla, S C Manrubia, A Valleriani
Affiliations

Shape of ecological networks

M Lässig et al. Phys Rev Lett. .

Abstract

We study the statistics of ecosystems with a variable number of coevolving 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. They are treated 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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