Effects of a long‐term anoxic warming scenario on microbial community structure and functional potential of permafrost‐affected soil
Abstract Permafrost (PF)‐affected soils are widespread in the Arctic and store about half the global soil organic carbon. This large carbon pool becomes vulnerable to microbial decomposition through PF warming and deepening of the seasonal thaw layer (active layer [AL]). Here we combined greenhouse...
Published in: | Permafrost and Periglacial Processes |
---|---|
Main Authors: | , , , , , , , , |
Other Authors: | , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Wiley
2021
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1002/ppp.2131 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.2131 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/ppp.2131 |
id |
crwiley:10.1002/ppp.2131 |
---|---|
record_format |
openpolar |
spelling |
crwiley:10.1002/ppp.2131 2024-09-09T19:25:50+00:00 Effects of a long‐term anoxic warming scenario on microbial community structure and functional potential of permafrost‐affected soil Yang, Sizhong Liebner, Susanne Walz, Josefine Knoblauch, Christian Bornemann, Till L. V. Probst, Alexander J. Wagner, Dirk Jetten, Mike S. M. in ‘t Zandt, Michiel H. Helmholtz-Gemeinschaft National Key Research and Development Program of China Chinese Academy of Sciences Deutsche Forschungsgemeinschaft European Research Council Soehngen Institute of Anaerobic Microbiology Ministère de la Culture 2021 http://dx.doi.org/10.1002/ppp.2131 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.2131 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/ppp.2131 en eng Wiley http://creativecommons.org/licenses/by/4.0/ Permafrost and Periglacial Processes volume 32, issue 4, page 641-656 ISSN 1045-6740 1099-1530 journal-article 2021 crwiley https://doi.org/10.1002/ppp.2131 2024-08-15T04:18:56Z Abstract Permafrost (PF)‐affected soils are widespread in the Arctic and store about half the global soil organic carbon. This large carbon pool becomes vulnerable to microbial decomposition through PF warming and deepening of the seasonal thaw layer (active layer [AL]). Here we combined greenhouse gas (GHG) production rate measurements with a metagenome‐based assessment of the microbial taxonomic and metabolic potential before and after 5 years of incubation under anoxic conditions at a constant temperature of 4°C in the AL, PF transition layer, and intact PF. Warming led to a rapid initial release of CO 2 and, to a lesser extent, CH 4 in all layers. After the initial pulse, especially in CO 2 production, GHG production rates declined and conditions became more methanogenic. Functional gene‐based analyses indicated a decrease in carbon‐ and nitrogen‐cycling genes and a community shift to the degradation of less‐labile organic matter. This study reveals low but continuous GHG production in long‐term warming scenarios, which coincides with a decrease in the relative abundance of major metabolic pathway genes and an increase in carbohydrate‐active enzyme classes. Article in Journal/Newspaper Arctic permafrost Permafrost and Periglacial Processes Wiley Online Library Arctic Permafrost and Periglacial Processes 32 4 641 656 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
Abstract Permafrost (PF)‐affected soils are widespread in the Arctic and store about half the global soil organic carbon. This large carbon pool becomes vulnerable to microbial decomposition through PF warming and deepening of the seasonal thaw layer (active layer [AL]). Here we combined greenhouse gas (GHG) production rate measurements with a metagenome‐based assessment of the microbial taxonomic and metabolic potential before and after 5 years of incubation under anoxic conditions at a constant temperature of 4°C in the AL, PF transition layer, and intact PF. Warming led to a rapid initial release of CO 2 and, to a lesser extent, CH 4 in all layers. After the initial pulse, especially in CO 2 production, GHG production rates declined and conditions became more methanogenic. Functional gene‐based analyses indicated a decrease in carbon‐ and nitrogen‐cycling genes and a community shift to the degradation of less‐labile organic matter. This study reveals low but continuous GHG production in long‐term warming scenarios, which coincides with a decrease in the relative abundance of major metabolic pathway genes and an increase in carbohydrate‐active enzyme classes. |
author2 |
Helmholtz-Gemeinschaft National Key Research and Development Program of China Chinese Academy of Sciences Deutsche Forschungsgemeinschaft European Research Council Soehngen Institute of Anaerobic Microbiology Ministère de la Culture |
format |
Article in Journal/Newspaper |
author |
Yang, Sizhong Liebner, Susanne Walz, Josefine Knoblauch, Christian Bornemann, Till L. V. Probst, Alexander J. Wagner, Dirk Jetten, Mike S. M. in ‘t Zandt, Michiel H. |
spellingShingle |
Yang, Sizhong Liebner, Susanne Walz, Josefine Knoblauch, Christian Bornemann, Till L. V. Probst, Alexander J. Wagner, Dirk Jetten, Mike S. M. in ‘t Zandt, Michiel H. Effects of a long‐term anoxic warming scenario on microbial community structure and functional potential of permafrost‐affected soil |
author_facet |
Yang, Sizhong Liebner, Susanne Walz, Josefine Knoblauch, Christian Bornemann, Till L. V. Probst, Alexander J. Wagner, Dirk Jetten, Mike S. M. in ‘t Zandt, Michiel H. |
author_sort |
Yang, Sizhong |
title |
Effects of a long‐term anoxic warming scenario on microbial community structure and functional potential of permafrost‐affected soil |
title_short |
Effects of a long‐term anoxic warming scenario on microbial community structure and functional potential of permafrost‐affected soil |
title_full |
Effects of a long‐term anoxic warming scenario on microbial community structure and functional potential of permafrost‐affected soil |
title_fullStr |
Effects of a long‐term anoxic warming scenario on microbial community structure and functional potential of permafrost‐affected soil |
title_full_unstemmed |
Effects of a long‐term anoxic warming scenario on microbial community structure and functional potential of permafrost‐affected soil |
title_sort |
effects of a long‐term anoxic warming scenario on microbial community structure and functional potential of permafrost‐affected soil |
publisher |
Wiley |
publishDate |
2021 |
url |
http://dx.doi.org/10.1002/ppp.2131 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.2131 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/ppp.2131 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic permafrost Permafrost and Periglacial Processes |
genre_facet |
Arctic permafrost Permafrost and Periglacial Processes |
op_source |
Permafrost and Periglacial Processes volume 32, issue 4, page 641-656 ISSN 1045-6740 1099-1530 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1002/ppp.2131 |
container_title |
Permafrost and Periglacial Processes |
container_volume |
32 |
container_issue |
4 |
container_start_page |
641 |
op_container_end_page |
656 |
_version_ |
1809895547258011648 |