Invertebrates increase the sensitivity of non labile soil carbon to climate change

Briones, M.J.I., Ostle, N.J. and Garnett, M. (2007) Invertebrates increase the sensitivity of non labile soil carbon to climate change. Soil Biology and Biochemistry, 39(3), pp. 816-818. (doi: 10.1016/j.soilbio.2006.09.007)

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The fate of global soil carbon stores in response to predicted climate change is a ‘hotly’ debated topic. Considerable uncertainties remain as to the temperature sensitivity of non-labile soil organic matter (SOM) to decomposition. Currently, models assume that organic matter decomposition is solely controlled by the interaction between climatic conditions and soil mineral characteristics. Consequently, little attention has been paid to adaptive responses of soil decomposer organisms to climate change and their impacts on the turnover of long-standing terrestrial carbon reservoirs. Using a radiocarbon approach we found that warming increased soil invertebrate populations (Enchytraeid worms) leading to a greater turnover of older soil carbon pools. The implication of this finding is that until soil physiology and biology are meaningfully represented in ecosystem carbon models, predictions will underestimate soil carbon turnover.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Garnett, Dr Mark
Authors: Briones, M.J.I., Ostle, N.J., and Garnett, M.
College/School:College of Science and Engineering > Scottish Universities Environmental Research Centre
Journal Name:Soil Biology and Biochemistry
Published Online:12 October 2006

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