2016/07/15 by Florent Malrieu, Malrieu, Florent, Tran Hoa Phu +1
Medicine · Biochemistry, Genetics and Molecular Biology · Social Sciences · #Mathematical and Theoretical Epidemiology and Ecology Models #Evolution and Genetic Dynamics #Evolutionary Game Theory and Cooperation
paper · pdf · doi:10.48550/arxiv.1607.04395
In this note, we study the long time behavior of Lotka-Volterra systems whose coefficients vary randomly. Benam and Lobry established that randomly switching between two environments that are both favorable to the same species may lead to four different regimes: almost sure extinction of one of the two species, random extinction of one species or the other and persistence of both species. Our purpose here is to provide a complete description of the model. In particular, we show that any couple of environments may lead to the four different behaviours of the stochastic process depending on the jump rates.