Soil microbial respiration in arctic soil does not acclimate to temperature
Abstract Warming‐induced release of CO 2 from the large carbon (C) stores in arctic soils could accelerate climate change. However, declines in the response of soil respiration to warming in long‐term experiments suggest that microbial activity acclimates to temperature, greatly reducing the potenti...
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crwiley:10.1111/j.1461-0248.2008.01223.x 2024-09-30T14:29:42+00:00 Soil microbial respiration in arctic soil does not acclimate to temperature Hartley, Iain P. Hopkins, David W. Garnett, Mark H. Sommerkorn, Martin Wookey, Philip A. 2008 http://dx.doi.org/10.1111/j.1461-0248.2008.01223.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1461-0248.2008.01223.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1461-0248.2008.01223.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Ecology Letters volume 11, issue 10, page 1092-1100 ISSN 1461-023X 1461-0248 journal-article 2008 crwiley https://doi.org/10.1111/j.1461-0248.2008.01223.x 2024-09-03T04:25:20Z Abstract Warming‐induced release of CO 2 from the large carbon (C) stores in arctic soils could accelerate climate change. However, declines in the response of soil respiration to warming in long‐term experiments suggest that microbial activity acclimates to temperature, greatly reducing the potential for enhanced C losses. As reduced respiration rates with time could be equally caused by substrate depletion, evidence for thermal acclimation remains controversial. To overcome this problem, we carried out a cooling experiment with soils from arctic Sweden. If acclimation causes the reduction in soil respiration observed after experimental warming, then it should subsequently lead to an increase in respiration rates after cooling. We demonstrate that thermal acclimation did not occur following cooling. Rather, during the 90 days after cooling, a further reduction in the soil respiration rate was observed, which was only reversed by extended re‐exposure to warmer temperatures. We conclude that over the time scale of a few weeks to months, warming‐induced changes in the microbial community in arctic soils will amplify the instantaneous increase in the rates of CO 2 production and thus enhance C losses potentially accelerating the rate of 21st century climate change. Article in Journal/Newspaper Arctic Climate change Wiley Online Library Arctic Ecology Letters 11 10 1092 1100 |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract Warming‐induced release of CO 2 from the large carbon (C) stores in arctic soils could accelerate climate change. However, declines in the response of soil respiration to warming in long‐term experiments suggest that microbial activity acclimates to temperature, greatly reducing the potential for enhanced C losses. As reduced respiration rates with time could be equally caused by substrate depletion, evidence for thermal acclimation remains controversial. To overcome this problem, we carried out a cooling experiment with soils from arctic Sweden. If acclimation causes the reduction in soil respiration observed after experimental warming, then it should subsequently lead to an increase in respiration rates after cooling. We demonstrate that thermal acclimation did not occur following cooling. Rather, during the 90 days after cooling, a further reduction in the soil respiration rate was observed, which was only reversed by extended re‐exposure to warmer temperatures. We conclude that over the time scale of a few weeks to months, warming‐induced changes in the microbial community in arctic soils will amplify the instantaneous increase in the rates of CO 2 production and thus enhance C losses potentially accelerating the rate of 21st century climate change. |
format |
Article in Journal/Newspaper |
author |
Hartley, Iain P. Hopkins, David W. Garnett, Mark H. Sommerkorn, Martin Wookey, Philip A. |
spellingShingle |
Hartley, Iain P. Hopkins, David W. Garnett, Mark H. Sommerkorn, Martin Wookey, Philip A. Soil microbial respiration in arctic soil does not acclimate to temperature |
author_facet |
Hartley, Iain P. Hopkins, David W. Garnett, Mark H. Sommerkorn, Martin Wookey, Philip A. |
author_sort |
Hartley, Iain P. |
title |
Soil microbial respiration in arctic soil does not acclimate to temperature |
title_short |
Soil microbial respiration in arctic soil does not acclimate to temperature |
title_full |
Soil microbial respiration in arctic soil does not acclimate to temperature |
title_fullStr |
Soil microbial respiration in arctic soil does not acclimate to temperature |
title_full_unstemmed |
Soil microbial respiration in arctic soil does not acclimate to temperature |
title_sort |
soil microbial respiration in arctic soil does not acclimate to temperature |
publisher |
Wiley |
publishDate |
2008 |
url |
http://dx.doi.org/10.1111/j.1461-0248.2008.01223.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1461-0248.2008.01223.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1461-0248.2008.01223.x |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Climate change |
genre_facet |
Arctic Climate change |
op_source |
Ecology Letters volume 11, issue 10, page 1092-1100 ISSN 1461-023X 1461-0248 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1461-0248.2008.01223.x |
container_title |
Ecology Letters |
container_volume |
11 |
container_issue |
10 |
container_start_page |
1092 |
op_container_end_page |
1100 |
_version_ |
1811634933443067904 |