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(Referência obtida automaticamente do Google Scholar, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Random replicators with high-order interactions

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Autor(es):
De Oliveira‚ V.M. ; Fontanari‚ JF
Número total de Autores: 2
Tipo de documento: Artigo Científico
Fonte: Physical Review Letters; v. 85, n. 23, p. 4984-4987, 2000.
Resumo

We use tools of the equilibrium statistical mechanics of disordered systems to study analytically the statistical properties of an ecosystem composed of N species interacting via random mutual interactions, as well as via deterministic self-interactions of order p greater than or equal to 2. We show that the main effect of increasing the order of the interactions among the species is to make the system less competitive, in the sense that the fraction of extinct species is greatly reduced. In addition, we find that for p > 2 there is a threshold value which gives a lower bound to the concentration of the surviving species, preventing then the existence of rare species and, consequently, increasing the robustness of the ecosystem to external perturbations. (AU)

Processo FAPESP: 99/09644-9 - Evolução molecular teórica
Beneficiário:José Fernando Fontanari
Modalidade de apoio: Auxílio à Pesquisa - Temático