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Thermal tolerance and the global redistribution of animals

Citation

Sunday, JM and Bates, AE and Dulvy, NK, Thermal tolerance and the global redistribution of animals, Nature Climate Change pp. 1-5. ISSN 1758-678X (2012) [Refereed Article]


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Copyright Statement

Copyright 2012 Macmillan Publishers Limited

DOI: doi:10.1038/NCLIMATE1539

Abstract

The redistribution of life on Earth has emerged as one of the most significant biological responses to anthropogenic climate warming1–3. Despite being one of the most long-standing puzzles in ecology4, we still have little understanding of how temperature sets geographic range boundaries5. Here we show that marine and terrestrial ectotherms differ in the degree to which they fill their potential latitudinal ranges, as predicted from their thermal tolerance limits. Marine ectotherms more fully occupy the extent of latitudes tolerable within their thermal tolerance limits, and are consequently predicted to expand at their poleward range boundaries and contract at their equatorward boundaries with climate warming. In contrast, terrestrial ectotherms are excluded from the warmest regions of their latitudinal range; thus, the equatorward, or ‘trailing’ range boundaries, may not shift consistently towards the poles with climate warming. Using global observations of climateinduced range shifts, we test this prediction and show that in the ocean, shifts at both range boundaries have been equally responsive, whereas on land, equatorward range boundaries have lagged in response to climate warming. These results indicate that marine species’ ranges conform more closely to their limits of thermal tolerance, and thus range shifts will be more predictable and coherent. However, on land, warmer range boundaries are not at equilibrium with heat tolerance. Understanding the relative contribution of factors other than temperature in controlling equatorward range limits is critical for predicting distribution changes, with implications for population and community viability.

Item Details

Item Type:Refereed Article
Keywords:thermal tolerance, global redistribution of animals, geographic range boundaries, latitudinal range, temperature, climate change, global warming
Research Division:Environmental Sciences
Research Group:Ecological Applications
Research Field:Ecological Impacts of Climate Change
Objective Division:Environment
Objective Group:Flora, Fauna and Biodiversity
Objective Field:Marine Flora, Fauna and Biodiversity
Author:Bates, AE (Dr Amanda Bates)
ID Code:78341
Year Published:2012
Web of Science® Times Cited:246
Deposited By:Sustainable Marine Research Collaboration
Deposited On:2012-06-22
Last Modified:2013-05-06
Downloads:33 View Download Statistics

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