Asymptotic regime in N random interacting species

A. Fiasconaro (), D. Valenti and B. Spagnolo

The European Physical Journal B: Condensed Matter and Complex Systems, 2006, vol. 50, issue 1, 189-194

Abstract: The asymptotic regime of a complex ecosystem with N random interacting species and in the presence of an external multiplicative noise is analyzed. We find the role of the external noise on the long time probability distribution of the ith density species, the extinction of species and the local field acting on the ith population. We analyze in detail the transient dynamics of this field and the cavity field, which is the field acting on the ith species when this is absent. We find that the presence or the absence of some population give different asymptotic distributions of these fields. Copyright EDP Sciences/Società Italiana di Fisica/Springer-Verlag 2006

Keywords: 05.40.-a Fluctuation phenomena; random processes; noise; and Brownian motion; 05.45.-a Nonlinear dynamics and nonlinear dynamical systems; 87.23.Cc Population dynamics and ecological pattern formation; 89.75.-k Complex systems (search for similar items in EconPapers)
Date: 2006
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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DOI: 10.1140/epjb/e2006-00058-4

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