Effects of environmental fluctuation on plankton allelopathy

This paper studies a two-dimensional system that arises in plankton allelop athy involving discrete time delays and environmental fluctuations. The env ironmental parameters are assumed to be perturbed by white noise characteri zed by a Gaussian distribution with mean zero and unit spectral density. Th e dynamic behaviour of the stochastic system is studied and the fluctuation s in population are measured both analytically and numerically by computer simulation.