Biotic responses buffer warming‐induced soil organic carbon loss in Arctic tundra
Climate warming can result in both abiotic (e.g., permafrost thaw) and biotic (e.g., microbial functional genes) changes in Arctic tundra. Recent research has incorporated dynamic permafrost thaw in Earth system models (ESMs) and indicates that Arctic tundra could be a significant future carbon (C)...
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Online Access: | https://doi.org/10.1111/gcb.14325 |
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ftzenodo:oai:zenodo.org:1313609 2024-09-15T18:29:54+00:00 Biotic responses buffer warming‐induced soil organic carbon loss in Arctic tundra Liang, Junyi Xia, Jiangyang Shi, Zheng Jiang, Lifen Lu, Xingjie Mauritz, Marguerite Natali, Susan M. Pegoraro, Elaine Penton, Christopher Ryan Plaza, César Salmon, Verity Celis, Gerardo Cole, James R. Konstantinidis, Konstatinos T. Tiedje, James M. Zhou, Jizhong Schuur, Edward A.G. Luo, Yiqi 2018-07-17 https://doi.org/10.1111/gcb.14325 unknown Zenodo https://doi.org/10.1111/gcb.14325 oai:zenodo.org:1313609 info:eu-repo/semantics/openAccess Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode info:eu-repo/semantics/article 2018 ftzenodo https://doi.org/10.1111/gcb.14325 2024-07-27T07:47:05Z Climate warming can result in both abiotic (e.g., permafrost thaw) and biotic (e.g., microbial functional genes) changes in Arctic tundra. Recent research has incorporated dynamic permafrost thaw in Earth system models (ESMs) and indicates that Arctic tundra could be a significant future carbon (C) source due to the enhanced decomposition of thawed deep soil C. However, warming-induced biotic changes may influence biologically related parameters and the consequent projections in ESMs. How model parameters associated with biotic responses will change under warming and to what extent these changes affect projected C budgets have not been carefully examined. In this study, we synthesized six data sets over five years from a soil warming experiment at the Eight Mile Lake, Alaska, into the Terrestrial ECOsystem (TECO) model with a probabilistic inversion approach. The TECO model used multiple soil layers to track dynamics of thawed soil under different treatments. Our results show that warming increased light use efficiency of vegetation photosynthesis but decreased baseline (i.e., environment-corrected) turnover rates of SOC in both the fast and slow pools in comparison with those under control. Moreover, the parameter changes generally amplified over time, suggesting processes of gradual physiological acclimation and functional gene shifts of both plants and microbes. The TECO model predicted that field warming from 2009 to 2013 resulted in cumulative C losses of 224 or 87 g m -2 , respectively, without or with changes in those parameters. Thus, warming-induced parameter changes reduced predicted soil C loss by 61%. Our study suggests that it is critical to incorporate biotic changes in ESMs to improve the model performance in predicting C dynamics in permafrost regions. ACKNOWLEDGEMENTS. This study was financially supported by the US Department of Energy, Terrestrial Ecosystem Sciences grant DE SC00114085 and Biological Systems Research on the Role of Microbial Communities in Carbon Cycling Program grants ... Article in Journal/Newspaper permafrost Tundra Alaska Zenodo Global Change Biology 24 10 4946 4959 |
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Climate warming can result in both abiotic (e.g., permafrost thaw) and biotic (e.g., microbial functional genes) changes in Arctic tundra. Recent research has incorporated dynamic permafrost thaw in Earth system models (ESMs) and indicates that Arctic tundra could be a significant future carbon (C) source due to the enhanced decomposition of thawed deep soil C. However, warming-induced biotic changes may influence biologically related parameters and the consequent projections in ESMs. How model parameters associated with biotic responses will change under warming and to what extent these changes affect projected C budgets have not been carefully examined. In this study, we synthesized six data sets over five years from a soil warming experiment at the Eight Mile Lake, Alaska, into the Terrestrial ECOsystem (TECO) model with a probabilistic inversion approach. The TECO model used multiple soil layers to track dynamics of thawed soil under different treatments. Our results show that warming increased light use efficiency of vegetation photosynthesis but decreased baseline (i.e., environment-corrected) turnover rates of SOC in both the fast and slow pools in comparison with those under control. Moreover, the parameter changes generally amplified over time, suggesting processes of gradual physiological acclimation and functional gene shifts of both plants and microbes. The TECO model predicted that field warming from 2009 to 2013 resulted in cumulative C losses of 224 or 87 g m -2 , respectively, without or with changes in those parameters. Thus, warming-induced parameter changes reduced predicted soil C loss by 61%. Our study suggests that it is critical to incorporate biotic changes in ESMs to improve the model performance in predicting C dynamics in permafrost regions. ACKNOWLEDGEMENTS. This study was financially supported by the US Department of Energy, Terrestrial Ecosystem Sciences grant DE SC00114085 and Biological Systems Research on the Role of Microbial Communities in Carbon Cycling Program grants ... |
format |
Article in Journal/Newspaper |
author |
Liang, Junyi Xia, Jiangyang Shi, Zheng Jiang, Lifen Lu, Xingjie Mauritz, Marguerite Natali, Susan M. Pegoraro, Elaine Penton, Christopher Ryan Plaza, César Salmon, Verity Celis, Gerardo Cole, James R. Konstantinidis, Konstatinos T. Tiedje, James M. Zhou, Jizhong Schuur, Edward A.G. Luo, Yiqi |
spellingShingle |
Liang, Junyi Xia, Jiangyang Shi, Zheng Jiang, Lifen Lu, Xingjie Mauritz, Marguerite Natali, Susan M. Pegoraro, Elaine Penton, Christopher Ryan Plaza, César Salmon, Verity Celis, Gerardo Cole, James R. Konstantinidis, Konstatinos T. Tiedje, James M. Zhou, Jizhong Schuur, Edward A.G. Luo, Yiqi Biotic responses buffer warming‐induced soil organic carbon loss in Arctic tundra |
author_facet |
Liang, Junyi Xia, Jiangyang Shi, Zheng Jiang, Lifen Lu, Xingjie Mauritz, Marguerite Natali, Susan M. Pegoraro, Elaine Penton, Christopher Ryan Plaza, César Salmon, Verity Celis, Gerardo Cole, James R. Konstantinidis, Konstatinos T. Tiedje, James M. Zhou, Jizhong Schuur, Edward A.G. Luo, Yiqi |
author_sort |
Liang, Junyi |
title |
Biotic responses buffer warming‐induced soil organic carbon loss in Arctic tundra |
title_short |
Biotic responses buffer warming‐induced soil organic carbon loss in Arctic tundra |
title_full |
Biotic responses buffer warming‐induced soil organic carbon loss in Arctic tundra |
title_fullStr |
Biotic responses buffer warming‐induced soil organic carbon loss in Arctic tundra |
title_full_unstemmed |
Biotic responses buffer warming‐induced soil organic carbon loss in Arctic tundra |
title_sort |
biotic responses buffer warming‐induced soil organic carbon loss in arctic tundra |
publisher |
Zenodo |
publishDate |
2018 |
url |
https://doi.org/10.1111/gcb.14325 |
genre |
permafrost Tundra Alaska |
genre_facet |
permafrost Tundra Alaska |
op_relation |
https://doi.org/10.1111/gcb.14325 oai:zenodo.org:1313609 |
op_rights |
info:eu-repo/semantics/openAccess Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode |
op_doi |
https://doi.org/10.1111/gcb.14325 |
container_title |
Global Change Biology |
container_volume |
24 |
container_issue |
10 |
container_start_page |
4946 |
op_container_end_page |
4959 |
_version_ |
1810471388257976320 |