Labile carbon limits late winter microbial activity near Arctic treeline
Soil microbial communities remain active during much of the Arctic winter, despite deeply frozen soils. Overwinter microbial activity affects the global carbon (C) budget, nutrient cycling, and vegetation composition. Microbial respiration is highly temperature sensitive in frozen soils, as liquid w...
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ftpubmed:oai:pubmedcentral.nih.gov:7423931 2023-05-15T14:39:32+02:00 Labile carbon limits late winter microbial activity near Arctic treeline Sullivan, Patrick F. Stokes, Madeline C. McMillan, Cameron K. Weintraub, Michael N. 2020-08-12 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7423931/ http://www.ncbi.nlm.nih.gov/pubmed/32788652 https://doi.org/10.1038/s41467-020-17790-5 en eng Nature Publishing Group UK http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7423931/ http://www.ncbi.nlm.nih.gov/pubmed/32788652 http://dx.doi.org/10.1038/s41467-020-17790-5 © The Author(s) 2020 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. CC-BY Nat Commun Article Text 2020 ftpubmed https://doi.org/10.1038/s41467-020-17790-5 2020-08-23T00:27:28Z Soil microbial communities remain active during much of the Arctic winter, despite deeply frozen soils. Overwinter microbial activity affects the global carbon (C) budget, nutrient cycling, and vegetation composition. Microbial respiration is highly temperature sensitive in frozen soils, as liquid water and solute availability decrease rapidly with declining temperature. Climate warming and changes in snowpack are leading to warmer Arctic winter soils. Warmer winter soils are thought to yield greater microbial respiration of available C, greater overwinter CO(2) efflux and greater nutrient availability to plants at thaw. Using field and laboratory observations and experiments, we demonstrate that persistently warm winter soils can lead to labile C starvation and reduced microbial respiration, despite the high C content of most Arctic soils. If winter soils continue to warm, microbial C limitation will reduce expected CO(2) emissions and alter soil nutrient cycling, if not countered by greater labile C inputs. Text Arctic PubMed Central (PMC) Arctic Nature Communications 11 1 |
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Article Sullivan, Patrick F. Stokes, Madeline C. McMillan, Cameron K. Weintraub, Michael N. Labile carbon limits late winter microbial activity near Arctic treeline |
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Article |
description |
Soil microbial communities remain active during much of the Arctic winter, despite deeply frozen soils. Overwinter microbial activity affects the global carbon (C) budget, nutrient cycling, and vegetation composition. Microbial respiration is highly temperature sensitive in frozen soils, as liquid water and solute availability decrease rapidly with declining temperature. Climate warming and changes in snowpack are leading to warmer Arctic winter soils. Warmer winter soils are thought to yield greater microbial respiration of available C, greater overwinter CO(2) efflux and greater nutrient availability to plants at thaw. Using field and laboratory observations and experiments, we demonstrate that persistently warm winter soils can lead to labile C starvation and reduced microbial respiration, despite the high C content of most Arctic soils. If winter soils continue to warm, microbial C limitation will reduce expected CO(2) emissions and alter soil nutrient cycling, if not countered by greater labile C inputs. |
format |
Text |
author |
Sullivan, Patrick F. Stokes, Madeline C. McMillan, Cameron K. Weintraub, Michael N. |
author_facet |
Sullivan, Patrick F. Stokes, Madeline C. McMillan, Cameron K. Weintraub, Michael N. |
author_sort |
Sullivan, Patrick F. |
title |
Labile carbon limits late winter microbial activity near Arctic treeline |
title_short |
Labile carbon limits late winter microbial activity near Arctic treeline |
title_full |
Labile carbon limits late winter microbial activity near Arctic treeline |
title_fullStr |
Labile carbon limits late winter microbial activity near Arctic treeline |
title_full_unstemmed |
Labile carbon limits late winter microbial activity near Arctic treeline |
title_sort |
labile carbon limits late winter microbial activity near arctic treeline |
publisher |
Nature Publishing Group UK |
publishDate |
2020 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7423931/ http://www.ncbi.nlm.nih.gov/pubmed/32788652 https://doi.org/10.1038/s41467-020-17790-5 |
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Arctic |
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Arctic |
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Arctic |
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Arctic |
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Nat Commun |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7423931/ http://www.ncbi.nlm.nih.gov/pubmed/32788652 http://dx.doi.org/10.1038/s41467-020-17790-5 |
op_rights |
© The Author(s) 2020 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. |
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CC-BY |
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https://doi.org/10.1038/s41467-020-17790-5 |
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Nature Communications |
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11 |
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1 |
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