Activity restriction and the mechanistic basis for extinctions under climate warming
Michael R Kearney
Ecology Letters | WILEY | Published : 2013
Correlative analyses predict that anthropogenic climate warming will cause widespread extinction but the nature and generality of the underlying mechanisms is unclear. Warming-induced activity restriction has been proposed as a general explanatory mechanism for recent population extinctions in lizards, and has been used to forecast future extinction. Here, I test this hypothesis using globally applied biophysical calculations of the effects of warming and shade reduction on potential activity time and whole-life-cycle energy budgets. These 'thermodynamic niche' analyses show that activity restriction from climate warming is unlikely to provide a general explanation of recent extinctions, and..View full abstract
I thank Warren Porter for his support in the use Niche Mapper, and David Karoly, Lin Schwarzkopf, Ary Hoffmann, Ray Huey, Warren Porter and Bas Kooijman for discussion. This study was supported by an Australian Research Council fellowship to MRK and by the Victorian Life Sciences Computation Initiative.