Quantifying invasibility.

Autor: Pande J; Department of Physics, Bar-Ilan University, Ramat Gan, Israel., Tsubery Y; Department of Physics, Bar-Ilan University, Ramat Gan, Israel., Shnerb NM; Department of Physics, Bar-Ilan University, Ramat Gan, Israel.
Jazyk: angličtina
Zdroj: Ecology letters [Ecol Lett] 2022 Aug; Vol. 25 (8), pp. 1783-1794. Date of Electronic Publication: 2022 Jun 18.
DOI: 10.1111/ele.14031
Abstrakt: Invasibility, the chance of a population to grow from rarity and become established, plays a fundamental role in population genetics, ecology, epidemiology and evolution. For many decades, the mean growth rate of a species when it is rare has been employed as an invasion criterion. Recent studies show that the mean growth rate fails as a quantitative metric for invasibility, with its magnitude sometimes even increasing while the invasibility decreases. Here we provide two novel formulae, based on the diffusion approximation and a large-deviations (Wentzel-Kramers-Brillouin) approach, for the chance of invasion given the mean growth and its variance. The first formula has the virtue of simplicity, while the second one holds over a wider parameter range. The efficacy of the formulae, including their accompanying data analysis technique, is demonstrated using synthetic time series generated from canonical models and parameterised with empirical data.
(© 2022 The Authors. Ecology Letters published by John Wiley & Sons Ltd.)
Databáze: MEDLINE
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