Optimal growth temperature of Arctic soil bacterial communities increases under experimental warming
Abstract Future climate warming in the Arctic will likely increase the vulnerability of soil carbon stocks to microbial decomposition. However, it remains uncertain to what extent decomposition rates will change in a warmer Arctic, because extended soil warming could induce temperature adaptation of...
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Online Access: | http://dx.doi.org/10.1111/gcb.16342 https://onlinelibrary.wiley.com/doi/pdf/10.1111/gcb.16342 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/gcb.16342 |
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crwiley:10.1111/gcb.16342 2024-06-02T08:00:35+00:00 Optimal growth temperature of Arctic soil bacterial communities increases under experimental warming Rijkers, Ruud Rousk, Johannes Aerts, Rien Sigurdsson, Bjarni D. Weedon, James T. Knut och Alice Wallenbergs Stiftelse National Science Foundation of Sri Lanka Nederlandse Organisatie voor Wetenschappelijk Onderzoek 2022 http://dx.doi.org/10.1111/gcb.16342 https://onlinelibrary.wiley.com/doi/pdf/10.1111/gcb.16342 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/gcb.16342 en eng Wiley http://creativecommons.org/licenses/by/4.0/ Global Change Biology volume 28, issue 20, page 6050-6064 ISSN 1354-1013 1365-2486 journal-article 2022 crwiley https://doi.org/10.1111/gcb.16342 2024-05-06T07:01:15Z Abstract Future climate warming in the Arctic will likely increase the vulnerability of soil carbon stocks to microbial decomposition. However, it remains uncertain to what extent decomposition rates will change in a warmer Arctic, because extended soil warming could induce temperature adaptation of bacterial communities. Here we show that experimental warming induces shifts in the temperature–growth relationships of bacterial communities, which is driven by community turnover and is common across a diverse set of 8 (sub) Arctic soils. The optimal growth temperature ( T opt ) of the soil bacterial communities increased 0.27 ± 0.039 (SE) and 0.07 ± 0.028°C per °C of warming over a 0–30°C gradient, depending on the sampling moment. We identify a potential role for substrate depletion and time‐lag effects as drivers of temperature adaption in soil bacterial communities, which possibly explain discrepancies between earlier incubation and field studies. The changes in T opt were accompanied by species‐level shifts in bacterial community composition, which were mostly soil specific. Despite the clear physiological responses to warming, there was no evidence for a common set of temperature‐responsive bacterial amplicon sequence variants. This implies that community composition data without accompanying physiological measurements may have limited utility for the identification of (potential) temperature adaption of soil bacterial communities in the Arctic. Since bacterial communities in Arctic soils are likely to adapt to increasing soil temperature under future climate change, this adaptation to higher temperature should be implemented in soil organic carbon modeling for accurate predictions of the dynamics of Arctic soil carbon stocks. Article in Journal/Newspaper Arctic Climate change Wiley Online Library Arctic Global Change Biology 28 20 6050 6064 |
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Wiley Online Library |
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English |
description |
Abstract Future climate warming in the Arctic will likely increase the vulnerability of soil carbon stocks to microbial decomposition. However, it remains uncertain to what extent decomposition rates will change in a warmer Arctic, because extended soil warming could induce temperature adaptation of bacterial communities. Here we show that experimental warming induces shifts in the temperature–growth relationships of bacterial communities, which is driven by community turnover and is common across a diverse set of 8 (sub) Arctic soils. The optimal growth temperature ( T opt ) of the soil bacterial communities increased 0.27 ± 0.039 (SE) and 0.07 ± 0.028°C per °C of warming over a 0–30°C gradient, depending on the sampling moment. We identify a potential role for substrate depletion and time‐lag effects as drivers of temperature adaption in soil bacterial communities, which possibly explain discrepancies between earlier incubation and field studies. The changes in T opt were accompanied by species‐level shifts in bacterial community composition, which were mostly soil specific. Despite the clear physiological responses to warming, there was no evidence for a common set of temperature‐responsive bacterial amplicon sequence variants. This implies that community composition data without accompanying physiological measurements may have limited utility for the identification of (potential) temperature adaption of soil bacterial communities in the Arctic. Since bacterial communities in Arctic soils are likely to adapt to increasing soil temperature under future climate change, this adaptation to higher temperature should be implemented in soil organic carbon modeling for accurate predictions of the dynamics of Arctic soil carbon stocks. |
author2 |
Knut och Alice Wallenbergs Stiftelse National Science Foundation of Sri Lanka Nederlandse Organisatie voor Wetenschappelijk Onderzoek |
format |
Article in Journal/Newspaper |
author |
Rijkers, Ruud Rousk, Johannes Aerts, Rien Sigurdsson, Bjarni D. Weedon, James T. |
spellingShingle |
Rijkers, Ruud Rousk, Johannes Aerts, Rien Sigurdsson, Bjarni D. Weedon, James T. Optimal growth temperature of Arctic soil bacterial communities increases under experimental warming |
author_facet |
Rijkers, Ruud Rousk, Johannes Aerts, Rien Sigurdsson, Bjarni D. Weedon, James T. |
author_sort |
Rijkers, Ruud |
title |
Optimal growth temperature of Arctic soil bacterial communities increases under experimental warming |
title_short |
Optimal growth temperature of Arctic soil bacterial communities increases under experimental warming |
title_full |
Optimal growth temperature of Arctic soil bacterial communities increases under experimental warming |
title_fullStr |
Optimal growth temperature of Arctic soil bacterial communities increases under experimental warming |
title_full_unstemmed |
Optimal growth temperature of Arctic soil bacterial communities increases under experimental warming |
title_sort |
optimal growth temperature of arctic soil bacterial communities increases under experimental warming |
publisher |
Wiley |
publishDate |
2022 |
url |
http://dx.doi.org/10.1111/gcb.16342 https://onlinelibrary.wiley.com/doi/pdf/10.1111/gcb.16342 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/gcb.16342 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Climate change |
genre_facet |
Arctic Climate change |
op_source |
Global Change Biology volume 28, issue 20, page 6050-6064 ISSN 1354-1013 1365-2486 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1111/gcb.16342 |
container_title |
Global Change Biology |
container_volume |
28 |
container_issue |
20 |
container_start_page |
6050 |
op_container_end_page |
6064 |
_version_ |
1800744636243771392 |