Temperature sensitivity of soil respiration rates enhanced by microbial community response

Soils 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 informa...

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Autores: Karhu, Kristiina, Auffret, Marc D., Dungait, Jennifer A. J., Hopkins, David W., Prosser, James I., Singh, Brajesh K., Subke, Jens-Arne, Wookey, Philip A., Ågren, Göran I., Sebastià, Ma. T., Gouriveau, Fabrice, Bergkvist, Göran, Meir, Patrick, Nottingham, Andrew T., Salinas, Norma, Hartley, Iain P.
Tipo de recurso: artículo
Estado:Versión enviada para evaluación y publicación
Fecha de publicación:2014
País:España
Institución:Universitat de Lleida (UdL)
Repositorio:Repositori Obert UdL
OAI Identifier:oai:repositori.udl.cat:10459.1/69886
Acceso en línea:https://doi.org/10.1038/nature13604
http://hdl.handle.net/10459.1/69886
Access Level:acceso abierto
Palabra clave:Biogeochemistry
Climate-change ecology
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spelling Temperature sensitivity of soil respiration rates enhanced by microbial community responseKarhu, KristiinaAuffret, Marc D.Dungait, Jennifer A. J.Hopkins, David W.Prosser, James I.Singh, Brajesh K.Subke, Jens-ArneWookey, Philip A.Ågren, Göran I.Sebastià, Ma. T.Gouriveau, FabriceBergkvist, GöranMeir, PatrickNottingham, Andrew T.Salinas, NormaHartley, Iain P.BiogeochemistryClimate-change ecologySoils 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.This 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.Springer Nature2014info:eu-repo/semantics/articleinfo:eu-repo/semantics/submittedVersionhttps://doi.org/10.1038/nature13604http://hdl.handle.net/10459.1/69886reponame:Repositori Obert UdL instname:Universitat de Lleida (UdL)InglésVersió preprint del document publicat a: https://doi.org/10.1038/nature13604Nature, 2014, vol. 513, p. 81-84(c) Nature Publishing Group, a division of Macmillan Publishers Limited, 2014info:eu-repo/semantics/openAccessoai:repositori.udl.cat:10459.1/698862026-06-24T12:42:17Z
dc.title.none.fl_str_mv Temperature sensitivity of soil respiration rates enhanced by microbial community response
title Temperature sensitivity of soil respiration rates enhanced by microbial community response
spellingShingle Temperature sensitivity of soil respiration rates enhanced by microbial community response
Karhu, Kristiina
Biogeochemistry
Climate-change ecology
title_short Temperature sensitivity of soil respiration rates enhanced by microbial community response
title_full Temperature sensitivity of soil respiration rates enhanced by microbial community response
title_fullStr Temperature sensitivity of soil respiration rates enhanced by microbial community response
title_full_unstemmed Temperature sensitivity of soil respiration rates enhanced by microbial community response
title_sort Temperature sensitivity of soil respiration rates enhanced by microbial community response
dc.creator.none.fl_str_mv Karhu, Kristiina
Auffret, Marc D.
Dungait, Jennifer A. J.
Hopkins, David W.
Prosser, James I.
Singh, Brajesh K.
Subke, Jens-Arne
Wookey, Philip A.
Ågren, Göran I.
Sebastià, Ma. T.
Gouriveau, Fabrice
Bergkvist, Göran
Meir, Patrick
Nottingham, Andrew T.
Salinas, Norma
Hartley, Iain P.
author Karhu, Kristiina
author_facet Karhu, Kristiina
Auffret, Marc D.
Dungait, Jennifer A. J.
Hopkins, David W.
Prosser, James I.
Singh, Brajesh K.
Subke, Jens-Arne
Wookey, Philip A.
Ågren, Göran I.
Sebastià, Ma. T.
Gouriveau, Fabrice
Bergkvist, Göran
Meir, Patrick
Nottingham, Andrew T.
Salinas, Norma
Hartley, Iain P.
author_role author
author2 Auffret, Marc D.
Dungait, Jennifer A. J.
Hopkins, David W.
Prosser, James I.
Singh, Brajesh K.
Subke, Jens-Arne
Wookey, Philip A.
Ågren, Göran I.
Sebastià, Ma. T.
Gouriveau, Fabrice
Bergkvist, Göran
Meir, Patrick
Nottingham, Andrew T.
Salinas, Norma
Hartley, Iain P.
author2_role author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Biogeochemistry
Climate-change ecology
topic Biogeochemistry
Climate-change ecology
description Soils 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.
publishDate 2014
dc.date.none.fl_str_mv 2014
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/submittedVersion
format article
status_str submittedVersion
dc.identifier.none.fl_str_mv https://doi.org/10.1038/nature13604
http://hdl.handle.net/10459.1/69886
url https://doi.org/10.1038/nature13604
http://hdl.handle.net/10459.1/69886
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Versió preprint del document publicat a: https://doi.org/10.1038/nature13604
Nature, 2014, vol. 513, p. 81-84
dc.rights.none.fl_str_mv (c) Nature Publishing Group, a division of Macmillan Publishers Limited, 2014
info:eu-repo/semantics/openAccess
rights_invalid_str_mv (c) Nature Publishing Group, a division of Macmillan Publishers Limited, 2014
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Springer Nature
publisher.none.fl_str_mv Springer Nature
dc.source.none.fl_str_mv reponame:Repositori Obert UdL
instname:Universitat de Lleida (UdL)
instname_str Universitat de Lleida (UdL)
reponame_str Repositori Obert UdL
collection Repositori Obert UdL
repository.name.fl_str_mv
repository.mail.fl_str_mv
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