Thermal adaptation of soil microbial respiration to elevated temperature


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dc.contributor.author Bradford, Mark A.
dc.contributor.author Davies, Christian A.
dc.contributor.author Frey, Serita D.
dc.contributor.author Maddox, Thomas R.
dc.contributor.author Melillo, Jerry M.
dc.contributor.author Mohan, Jacqueline E.
dc.contributor.author Reynolds, James F.
dc.contributor.author Treseder, Kathleen K.
dc.contributor.author Wallenstein, Matthew D.
dc.date.accessioned 2009-10-01T13:40:51Z
dc.date.available 2009-10-01T13:40:51Z
dc.date.issued 2008-07-22
dc.identifier.uri http://hdl.handle.net/1912/3015
dc.description Author Posting. © The Author(s), 2008. This is the author's version of the work. It is posted here by permission of Blackwell for personal use, not for redistribution. The definitive version was published in Ecology Letters 11 (2008): 1316-1327, doi:10.1111/j.1461-0248.2008.01251.x. en_US
dc.description.abstract In the short-term heterotrophic soil respiration is strongly and positively related to temperature. In the long-term its response to temperature is uncertain. One reason for this is because in field experiments increases in respiration due to warming are relatively short-lived. The explanations proposed for this ephemeral response include depletion of fast-cycling, soil carbon pools and thermal adaptation of microbial respiration. Using a >15 year soil warming experiment in a mid-latitude forest, we show that the apparent ‘acclimation’ of soil respiration at the ecosystem scale results from combined effects of reductions in soil carbon pools and microbial biomass, and thermal adaptation of microbial respiration. Mass specific respiration rates were lower when seasonal temperatures were higher, suggesting that rate reductions under experimental warming likely occurred through temperature-induced changes in the microbial community. Our results imply that stimulatory effects of global temperature rise on soil respiration rates may be lower than currently predicted. en_US
dc.description.sponsorship This research was supported by the Office of Science (BER), U.S. Department of Energy and the Andrew W. Mellon Foundation. en_US
dc.format.mimetype application/pdf
dc.language.iso en_US en_US
dc.relation.uri http://dx.doi.org/10.1111/j.1461-0248.2008.01251.x
dc.subject Acclimation en_US
dc.subject Adaptation en_US
dc.subject Soil respiration en_US
dc.subject Thermal biology en_US
dc.subject Temperature en_US
dc.subject Carbon cycling en_US
dc.subject Climate change en_US
dc.subject Climate warming en_US
dc.subject Microbial community en_US
dc.subject CO2 en_US
dc.title Thermal adaptation of soil microbial respiration to elevated temperature en_US
dc.type Preprint en_US

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