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Persistence and existence of stationary measures for a logistic growth model with predation
Authors:Susana Pinheiro
Affiliation:Department of Mathematics, Brooklyn College of the City University of New York, New York, USA
Abstract:We consider a stochastic logistic growth model with a predation term, and a diffusive stochastic part with a power-type coefficient. We provide criteria for the persistence of the population and for the existence and uniqueness of a stationary measure. Furthermore, we perform a detailed study of the densities of the stationary measures resorting to the forward Kolmogorov equation. We compile our results in a stochastic bifurcation diagram, drawing comparisons with the corresponding deterministic model.
Keywords:Population dynamics  stationary measures  stochastic differential equations
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