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dc.contributor.authorKarhu, Kristiina
dc.contributor.authorAuffret, Marc D.
dc.contributor.authorDungait, Jennifer A. J.
dc.contributor.authorHopkins, David W.
dc.contributor.authorProsser, James I.
dc.contributor.authorSingh, Brajesh K.
dc.contributor.authorSubke, Jens-Arne
dc.contributor.authorWookey, Philip A.
dc.contributor.authorÅgren, Göran I.
dc.contributor.authorSebastià, Ma. T.
dc.contributor.authorGouriveau, Fabrice
dc.contributor.authorBergkvist, Göran
dc.contributor.authorMeir, Patrick
dc.contributor.authorNottingham, Andrew T.
dc.contributor.authorSalinas, Norma
dc.contributor.authorHartley, Iain P.
dc.date.accessioned2020-11-16T13:22:59Z
dc.date.available2020-11-16T13:22:59Z
dc.date.issued2014-09-03
dc.identifier.issn1476-4687
dc.identifier.urihttp://hdl.handle.net/10459.1/69886
dc.description.abstractSoils store about four times as much carbon as plant biomass1, and soil microbial respiration releases about 60 petagrams of carbon per year to the atmosphere as carbon dioxide2. Short-term experiments have shown that soil microbial respiration increases exponentially with temperature3. This information has been incorporated into soil carbon and Earth-system models, which suggest that warming-induced increases in carbon dioxide release from soils represent an important positive feedback loop that could influence twenty-first-century climate change4. The magnitude of this feedback remains uncertain, however, not least because the response of soil microbial communities to changing temperatures has the potential to either decrease5,6,7 or increase8,9 warming-induced carbon losses substantially. Here we collect soils from different ecosystems along a climate gradient from the Arctic to the Amazon and investigate how microbial community-level responses control the temperature sensitivity of soil respiration. We find that the microbial community-level response more often enhances than reduces the mid- to long-term (90 days) temperature sensitivity of respiration. Furthermore, the strongest enhancing responses were observed in soils with high carbon-to-nitrogen ratios and in soils from cold climatic regions. After 90 days, microbial community responses increased the temperature sensitivity of respiration in high-latitude soils by a factor of 1.4 compared to the instantaneous temperature response. This suggests that the substantial carbon stores in Arctic and boreal soils could be more vulnerable to climate warming than currently predicted.ca_ES
dc.description.sponsorshipThis work was carried out with Natural Environment Research Council (NERC) funding (grant number NE/H022333/1). K.K. was supported by an Academy of Finland post-doctoral research grant while finalizing this manuscript. P.M. was supported by ARC FT110100457 and NERC NE/G018278/1, and B.K.S by the Grain Research and Development Corporation and ARC DP130104841.ca_ES
dc.language.isoengca_ES
dc.publisherSpringer Natureca_ES
dc.relation.isformatofVersió preprint del document publicat a: https://doi.org/10.1038/nature13604ca_ES
dc.relation.ispartofNature, 2014, vol. 513, p. 81-84ca_ES
dc.rights(c) Nature Publishing Group, a division of Macmillan Publishers Limited, 2014ca_ES
dc.subjectBiogeochemistryca_ES
dc.subjectClimate-change ecologyca_ES
dc.titleTemperature sensitivity of soil respiration rates enhanced by microbial community responseca_ES
dc.typeinfo:eu-repo/semantics/articleca_ES
dc.identifier.idgrec022396
dc.type.versioninfo:eu-repo/semantics/submittedVersionca_ES
dc.rights.accessRightsinfo:eu-repo/semantics/openAccessca_ES
dc.identifier.doihttps://doi.org/10.1038/nature13604


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