Modelling respiration of vegetation: Evidence for a general temperature-dependent Q10

Mark G. Tjoelker, Jacek Oleksyn, Peter B. Reich

Research output: Contribution to journalArticlepeer-review

376 Scopus citations

Abstract

Temperature responses of rates of respiratory CO2 efflux from plants, soils, and ecosystems are frequently modelled using exponential functions with a constant Q10 near 2.0 (fractional change in rate with a 10°C increase in temperature). However, we present evidence that Q10 declines with short-term increases in temperature in a predictable manner across diverse plant taxa. Thus, models using a constant Q10 are biased, and use of a temperature-corrected Q10 may improve the accuracy of modelled respiratory CO2 efflux in plants and ecosystems in response to temperature and predicted global climate changes.

Original languageEnglish (US)
Pages (from-to)223-230
Number of pages8
JournalGlobal change biology
Volume7
Issue number2
DOIs
StatePublished - 2001

Keywords

  • Biome
  • Boreal tree species
  • Dark respiration
  • Elevated carbon dioxide
  • Q0
  • Temperature response function

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