Stochastic models of population extinction

Details Stochastic models of population extinction Stochastic models of population extinction

2010-08-06

arxiv.org/abs/1008.1162v1

Biology

Quantitative Biology

Populations and Evolution

A popular review, to appear in "Trends in Ecology & Evolution", 42 pages, 5 figures

Scientific paper

Theoretical ecologists have long sought to understand how the persistence of populations depends on biotic and abiotic factors. Classical work showed that demographic stochasticity causes the mean time to extinction to increase exponentially with population size, whereas variation in environmental conditions can lead to a power law scaling. Recent work has focused especially on the influence of the autocorrelation structure ("color") of environmental noise. In theoretical physics, there is a burst of research activity in analyzing large fluctuations in stochastic population dynamics. This research provides powerful tools for determining extinction times and characterizing the pathway to extinction. It yields, therefore, sharp insights into extinction processes and has great potential for further applications in theoretical biology.

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