Plankton blooms and patchiness generated by heterogeneous physical environments

摘要: Abstract Microscopic turbulent motions of water have been shown to influence the dynamics microscopic species living in that habitat. The number, stability, and excitability stationary states a predator–prey model plankton can therefore change when strength varies. In spatial system these are naturally different form heterogeneous physical environment. Spatially neighboring communities with conditions impact each other due diffusive coupling. We show local variations global propagating pulses high population densities. For this we consider three models responses degree heterogeneity can, depending on model, promote or reduce number pulses, which be interpreted as patchy distributions recurrent blooms.