title: Effect of demographic noise in a phytoplankton-zooplankton model of bloom dynamics.
abstract: An extension of the Truscott-Brindley model [Bull. Math. Biol. 56, 981 (1994)] is derived to account for the effect of demographic fluctuations. In the presence of seasonal forcing and sufficiently shallow water conditions, the fluctuations induced by the discreteness of the zooplankton component appear sufficient to cause switching between the bloom and no-bloom cycles predicted at the mean-field level by the model. The destabilization persists in the thermodynamic limit of a water basin infinitely extended in the horizontal direction.
authors: ISAC-CNR and INFN, Sez. Cagliari, I-09042 Monserrato, Italy.
authors: Piero
authors: P
authors: Olla
mesh_terms: D000818:Animals; D003198:Computer Simulation; D005068:Eutrophication / Q000502:physiology*; D008954:Models, Biological; D015233:Models, Statistical; D010839:Phytoplankton / Q000502:physiology*; D011157:Population Dynamics; D015048:Zooplankton / Q000502:physiology*