Persistence and existence of stationary measures for a logistic growth model with predation |
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Authors: | Susana Pinheiro |
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Affiliation: | Department of Mathematics, Brooklyn College of the City University of New York, New York, USA |
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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. |
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Keywords: | Population dynamics stationary measures stochastic differential equations |
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