Arctic soil respiration and microbial community structure driven by silicon and calcium
Global warming is most pronounced in the Arctic region. Greenhouse gas (GHG) release from Arctic soils increase due to global warming. By this, the Arctic may change from currently being a carbon sink to a future source. To improve accurate predictions of future GHG release from Arctic soils, it is...
Published in: | Science of The Total Environment |
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Online Access: | https://curis.ku.dk/portal/da/publications/arctic-soil-respiration-and-microbial-community-structure-driven-by-silicon-and-calcium(1063addc-c3e7-4ae5-903b-3fa33de9b6b1).html https://doi.org/10.1016/j.scitotenv.2022.156152 |
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ftcopenhagenunip:oai:pure.atira.dk:publications/1063addc-c3e7-4ae5-903b-3fa33de9b6b1 2024-06-09T07:42:22+00:00 Arctic soil respiration and microbial community structure driven by silicon and calcium Stimmler, Peter Priemé, Anders Elberling, Bo Goeckede, Mathias Schaller, Joerg 2022 https://curis.ku.dk/portal/da/publications/arctic-soil-respiration-and-microbial-community-structure-driven-by-silicon-and-calcium(1063addc-c3e7-4ae5-903b-3fa33de9b6b1).html https://doi.org/10.1016/j.scitotenv.2022.156152 eng eng info:eu-repo/semantics/closedAccess Stimmler , P , Priemé , A , Elberling , B , Goeckede , M & Schaller , J 2022 , ' Arctic soil respiration and microbial community structure driven by silicon and calcium ' , Science of the Total Environment , vol. 838 , no. 2 , 156152 . https://doi.org/10.1016/j.scitotenv.2022.156152 Carbon cycle Greenhouse gas emissions Halo-tolerance Microbial community structure Permafrost Salinity Silica article 2022 ftcopenhagenunip https://doi.org/10.1016/j.scitotenv.2022.156152 2024-05-16T11:29:24Z Global warming is most pronounced in the Arctic region. Greenhouse gas (GHG) release from Arctic soils increase due to global warming. By this, the Arctic may change from currently being a carbon sink to a future source. To improve accurate predictions of future GHG release from Arctic soils, it is important to unravel factors controlling both the microbial community structure and activity. Soil microbial activity is important for Arctic greenhouse gas production, but depends on soil conditions such as salinity being increased by calcium (Ca) and decreased by amorphous silica (Si) potentially enhancing water availability. In the Arctic, climate changes may alter salinity by changing Si and Ca concentrations upon permafrost thaw as a result of global warming with Si potentially decreasing and Ca potentially increasing salinity. Here, we show that higher Si concentration increased and higher Ca concentrations decreased the microbial CO 2 production for both a salt-poor and a salt-rich soil from Greenland. In the salt-rich soil, Si amendment increased CO 2 production and the abundance of gram-negative bacteria. However, the bacterial community became dominated by spore-forming gram-positive Firmicutes and Actinobacteria. The CO 2 release from soils was directly affected by the abundance of bacteria and fungi, and their community structure. Our results highlight the importance of the soil Si and Ca concentration on organic carbon turnover by strongly changing microbial abundance and community structure, with consequences for CO 2 release in the Arctic. Consequently, Ca and Si and their relation to Arctic soil microbial community structure has to be considered when estimating pan-Arctic carbon budgets. Article in Journal/Newspaper Arctic Arctic Global warming Greenland permafrost University of Copenhagen: Research Arctic Greenland Science of The Total Environment 838 156152 |
institution |
Open Polar |
collection |
University of Copenhagen: Research |
op_collection_id |
ftcopenhagenunip |
language |
English |
topic |
Carbon cycle Greenhouse gas emissions Halo-tolerance Microbial community structure Permafrost Salinity Silica |
spellingShingle |
Carbon cycle Greenhouse gas emissions Halo-tolerance Microbial community structure Permafrost Salinity Silica Stimmler, Peter Priemé, Anders Elberling, Bo Goeckede, Mathias Schaller, Joerg Arctic soil respiration and microbial community structure driven by silicon and calcium |
topic_facet |
Carbon cycle Greenhouse gas emissions Halo-tolerance Microbial community structure Permafrost Salinity Silica |
description |
Global warming is most pronounced in the Arctic region. Greenhouse gas (GHG) release from Arctic soils increase due to global warming. By this, the Arctic may change from currently being a carbon sink to a future source. To improve accurate predictions of future GHG release from Arctic soils, it is important to unravel factors controlling both the microbial community structure and activity. Soil microbial activity is important for Arctic greenhouse gas production, but depends on soil conditions such as salinity being increased by calcium (Ca) and decreased by amorphous silica (Si) potentially enhancing water availability. In the Arctic, climate changes may alter salinity by changing Si and Ca concentrations upon permafrost thaw as a result of global warming with Si potentially decreasing and Ca potentially increasing salinity. Here, we show that higher Si concentration increased and higher Ca concentrations decreased the microbial CO 2 production for both a salt-poor and a salt-rich soil from Greenland. In the salt-rich soil, Si amendment increased CO 2 production and the abundance of gram-negative bacteria. However, the bacterial community became dominated by spore-forming gram-positive Firmicutes and Actinobacteria. The CO 2 release from soils was directly affected by the abundance of bacteria and fungi, and their community structure. Our results highlight the importance of the soil Si and Ca concentration on organic carbon turnover by strongly changing microbial abundance and community structure, with consequences for CO 2 release in the Arctic. Consequently, Ca and Si and their relation to Arctic soil microbial community structure has to be considered when estimating pan-Arctic carbon budgets. |
format |
Article in Journal/Newspaper |
author |
Stimmler, Peter Priemé, Anders Elberling, Bo Goeckede, Mathias Schaller, Joerg |
author_facet |
Stimmler, Peter Priemé, Anders Elberling, Bo Goeckede, Mathias Schaller, Joerg |
author_sort |
Stimmler, Peter |
title |
Arctic soil respiration and microbial community structure driven by silicon and calcium |
title_short |
Arctic soil respiration and microbial community structure driven by silicon and calcium |
title_full |
Arctic soil respiration and microbial community structure driven by silicon and calcium |
title_fullStr |
Arctic soil respiration and microbial community structure driven by silicon and calcium |
title_full_unstemmed |
Arctic soil respiration and microbial community structure driven by silicon and calcium |
title_sort |
arctic soil respiration and microbial community structure driven by silicon and calcium |
publishDate |
2022 |
url |
https://curis.ku.dk/portal/da/publications/arctic-soil-respiration-and-microbial-community-structure-driven-by-silicon-and-calcium(1063addc-c3e7-4ae5-903b-3fa33de9b6b1).html https://doi.org/10.1016/j.scitotenv.2022.156152 |
geographic |
Arctic Greenland |
geographic_facet |
Arctic Greenland |
genre |
Arctic Arctic Global warming Greenland permafrost |
genre_facet |
Arctic Arctic Global warming Greenland permafrost |
op_source |
Stimmler , P , Priemé , A , Elberling , B , Goeckede , M & Schaller , J 2022 , ' Arctic soil respiration and microbial community structure driven by silicon and calcium ' , Science of the Total Environment , vol. 838 , no. 2 , 156152 . https://doi.org/10.1016/j.scitotenv.2022.156152 |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1016/j.scitotenv.2022.156152 |
container_title |
Science of The Total Environment |
container_volume |
838 |
container_start_page |
156152 |
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1801371264989790208 |