Sur la vitesse d'extinction d'une population dans un environnement aléatoire.

C R Biol

Institut de recherche pour le développement, Unité 209 (UMMISCO), Bondy, France; Université Pierre-et-Marie-Curie, campus des Cordeliers, Paris, France. Electronic address:

Published: May 2017

This study focuses on the speed of extinction of a population living in a random environment that follows a continuous-time Markov chain. Each individual dies or reproduces at a rate that depends on the environment. The number of offspring during reproduction follows a given probability law that also depends on the environment. In the so-called subcritical case where the population goes for sure to extinction, there is an explicit formula for the speed of extinction. In some sense, environmental stochasticity slows down population extinction.

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http://dx.doi.org/10.1016/j.crvi.2017.04.002DOI Listing

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