Temperature variation makes ectotherms more sensitive to climate change

Krijn P. Paaijmans, Rebecca L. Heinig, Rebecca A. Seliga, Justine I. Blanford, Simon Blanford, Courtney C. Murdock, Matthew B. Thomas

Research output: Contribution to journalArticle

170 Citations (Scopus)

Abstract

Ectotherms are considered to be particularly vulnerable to climate warming. Descriptions of habitat temperatures and predicted changes in climate usually consider mean monthly, seasonal or annual conditions. Ectotherms, however, do not simply experience mean conditions, but are exposed to daily fluctuations in habitat temperatures. Here, we highlight how temperature fluctuation can generate 'realized' thermal reaction (fitness) norms that differ from the 'fundamental' norms derived under standard constant temperatures. Using a mosquito as a model organism, we find that temperature fluctuation reduces rate processes such as development under warm conditions, increases processes under cool conditions, and reduces both the optimum and the critical maximum temperature. Generalizing these effects for a range of terrestrial insects reveals that prevailing daily fluctuations in temperature should alter the sensitivity of species to climate warming by reducing 'thermal safety margins'. Such effects of daily temperature dynamics have generally been ignored in the climate change literature.

Original languageEnglish (US)
Pages (from-to)2373-2380
Number of pages8
JournalGlobal Change Biology
Volume19
Issue number8
DOIs
StatePublished - Aug 1 2013

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Climate change
climate change
temperature
Temperature
climate
warming
habitat
mosquito
fitness
insect
safety

All Science Journal Classification (ASJC) codes

  • Global and Planetary Change
  • Environmental Chemistry
  • Ecology
  • Environmental Science(all)

Cite this

Paaijmans, K. P., Heinig, R. L., Seliga, R. A., Blanford, J. I., Blanford, S., Murdock, C. C., & Thomas, M. B. (2013). Temperature variation makes ectotherms more sensitive to climate change. Global Change Biology, 19(8), 2373-2380. https://doi.org/10.1111/gcb.12240
Paaijmans, Krijn P. ; Heinig, Rebecca L. ; Seliga, Rebecca A. ; Blanford, Justine I. ; Blanford, Simon ; Murdock, Courtney C. ; Thomas, Matthew B. / Temperature variation makes ectotherms more sensitive to climate change. In: Global Change Biology. 2013 ; Vol. 19, No. 8. pp. 2373-2380.
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Paaijmans, KP, Heinig, RL, Seliga, RA, Blanford, JI, Blanford, S, Murdock, CC & Thomas, MB 2013, 'Temperature variation makes ectotherms more sensitive to climate change', Global Change Biology, vol. 19, no. 8, pp. 2373-2380. https://doi.org/10.1111/gcb.12240

Temperature variation makes ectotherms more sensitive to climate change. / Paaijmans, Krijn P.; Heinig, Rebecca L.; Seliga, Rebecca A.; Blanford, Justine I.; Blanford, Simon; Murdock, Courtney C.; Thomas, Matthew B.

In: Global Change Biology, Vol. 19, No. 8, 01.08.2013, p. 2373-2380.

Research output: Contribution to journalArticle

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Paaijmans KP, Heinig RL, Seliga RA, Blanford JI, Blanford S, Murdock CC et al. Temperature variation makes ectotherms more sensitive to climate change. Global Change Biology. 2013 Aug 1;19(8):2373-2380. https://doi.org/10.1111/gcb.12240