The scaling of population persistence with carrying capacity does not asymptote in populations of a fish experiencing extreme climate variability
Richard SA White, Brendan A Wintle, Peter A McHugh, Douglas J Booker, Angus R McIntosh
PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES | ROYAL SOC | Published : 2017
Despite growing concerns regarding increasing frequency of extreme climate events and declining population sizes, the influence of environmental stochasticity on the relationship between population carrying capacity and time-to-extinction has received little empirical attention. While time-to-extinction increases exponentially with carrying capacity in constant environments, theoretical models suggest increasing environmental stochasticity causes asymptotic scaling, thus making minimum viable carrying capacity vastly uncertain in variable environments. Using empirical estimates of environmental stochasticity in fish metapopulations, we showed that increasing environmental stochasticity resul..View full abstract
Awarded by ARC
R.S.A.W. was supported by a UC Scholarship during initial sampling and by the UC Roper Scholarship in Science during the later stages. B.A.W. was supported by ARC Future Fellowship FT100100819.