Role of the Colored Noise in Spatio-Temporal Behavior of Two Competing Species

D. Valenti, A. Fiasconaro, B. Spagnolo

Published 2005-09-16Version 1

We study the spatial distributions of two randomly interacting species, in the presence of an external multiplicative colored noise. The dynamics of the ecosystem is described by a coupled map lattice model. We find a nonmonotonic behavior in the formation of large scale spatial correlations as a function of the multiplicative colored noise intensity. This behavior is shifted towards higher values of the noise intensity for increasing correlation time of the noise.