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Climate change is already impacting species around the world. Although most focus has been on the effect of temperature, changes in climatic variables other than temperature are also expected to drive biological change. Current models suggest that ectotherms, such as reptiles, will be strongly affected by climate change; however, data from natural populations are rare. Here, we use extensive data from 2 populations of a viviparous lizard (Niveoscincus ocellatus Gray, 1845) at the climatic extreme of the species distribution. We examine the effects of climate at a local, a regional and a global scale (thus, integrating a suite of variables at different spatial and temporal scales) on 2 key life history traits: offspring date of birth and size at birth. Overall, our results show that across 9 years of study, local temperature had strong effects on the offspring date of birth but not on the size at birth. Therefore, a rapid increase in local temperature throughout the species range (as predicted under global warming scenarios) is likely to affect phenological processes with potential concomitant effects on offspring fitness and survival.

Item Type:	Refereed Article
Keywords:	atmospheric index, climate change, lizard, phenology, sea surface temperature.
Research Division:	Biological Sciences
Research Group:	Evolutionary biology
Research Field:	Evolutionary impacts of climate change
Objective Division:	Environmental Management
Objective Group:	Management of Antarctic and Southern Ocean environments
Objective Field:	Assessment and management of Antarctic and Southern Ocean ecosystems
UTAS Author:	Cadby, CD (Dr Chloe Bibari)
UTAS Author:	While, GM (Dr Geoff While)
UTAS Author:	Hobday, AJ (Dr Alistair Hobday)
UTAS Author:	Wapstra, E (Associate Professor Erik Wapstra)
ID Code:	63988
Year Published:	2010
Web of Science® Times Cited:	26
Deposited By:	Zoology
Deposited On:	2010-06-11
Last Modified:	2017-01-24
Downloads:	9 View Download Statistics