The importance of calcium and amorphous silica for arctic soil CO2 production
Future warming of the Arctic not only threatens to destabilize the enormous pool of organic carbon accumulated in permafrost soils but may also mobilize elements such as calcium (Ca) or silicon (Si). While for Greenlandic soils, it was recently shown that both elements may have a strong effect on ca...
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Online Access: | https://doi.org/10.3389/fenvs.2022.1019610 https://doaj.org/article/8e8b58b7bb7b4e48a831597cecc0456b |
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fttriple:oai:gotriple.eu:oai:doaj.org/article:8e8b58b7bb7b4e48a831597cecc0456b 2023-05-15T14:43:21+02:00 The importance of calcium and amorphous silica for arctic soil CO2 production Peter Stimmler Mathias Göckede Susan M. Natali Oliver Sonnentag Benjamin S. Gilfedder Nia Perron Jörg Schaller 2022-11-01 https://doi.org/10.3389/fenvs.2022.1019610 https://doaj.org/article/8e8b58b7bb7b4e48a831597cecc0456b en eng Frontiers Media S.A. 2296-665X doi:10.3389/fenvs.2022.1019610 https://doaj.org/article/8e8b58b7bb7b4e48a831597cecc0456b undefined Frontiers in Environmental Science, Vol 10 (2022) Arctic soil climate change GHG production greenhouse gas emissions silicon soil respiration envir geo Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2022 fttriple https://doi.org/10.3389/fenvs.2022.1019610 2023-01-22T17:50:35Z Future warming of the Arctic not only threatens to destabilize the enormous pool of organic carbon accumulated in permafrost soils but may also mobilize elements such as calcium (Ca) or silicon (Si). While for Greenlandic soils, it was recently shown that both elements may have a strong effect on carbon dioxide (CO2) production with Ca strongly decreasing and Si increasing CO2 production, little is known about the effects of Si and Ca on carbon cycle processes in soils from Siberia, the Canadian Shield, or Alaska. In this study, we incubated five different soils (rich organic soil from the Canadian Shield and from Siberia (one from the top and one from the deeper soil layer) and one acidic and one non-acidic soil from Alaska) for 6 months under both drained and waterlogged conditions and at different Ca and amorphous Si (ASi) concentrations. Our results show a strong decrease in soil CO2 production for all soils under both drained and waterlogged conditions with increasing Ca concentrations. The ASi effect was not clear across the different soils used, with soil CO2 production increasing, decreasing, or not being significantly affected depending on the soil type and if the soils were initially drained or waterlogged. We found no methane production in any of the soils regardless of treatment. Taking into account the predicted change in Si and Ca availability under a future warmer Arctic climate, the associated fertilization effects would imply potentially lower greenhouse gas production from Siberia and slightly increased greenhouse gas emissions from the Canadian Shield. Including Ca as a controlling factor for Arctic soil CO2 production rates may, therefore, reduces uncertainties in modeling future scenarios on how Arctic regions may respond to climate change. Article in Journal/Newspaper Arctic Climate change greenlandic permafrost Alaska Siberia Unknown Arctic Frontiers in Environmental Science 10 |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
fttriple |
language |
English |
topic |
Arctic soil climate change GHG production greenhouse gas emissions silicon soil respiration envir geo |
spellingShingle |
Arctic soil climate change GHG production greenhouse gas emissions silicon soil respiration envir geo Peter Stimmler Mathias Göckede Susan M. Natali Oliver Sonnentag Benjamin S. Gilfedder Nia Perron Jörg Schaller The importance of calcium and amorphous silica for arctic soil CO2 production |
topic_facet |
Arctic soil climate change GHG production greenhouse gas emissions silicon soil respiration envir geo |
description |
Future warming of the Arctic not only threatens to destabilize the enormous pool of organic carbon accumulated in permafrost soils but may also mobilize elements such as calcium (Ca) or silicon (Si). While for Greenlandic soils, it was recently shown that both elements may have a strong effect on carbon dioxide (CO2) production with Ca strongly decreasing and Si increasing CO2 production, little is known about the effects of Si and Ca on carbon cycle processes in soils from Siberia, the Canadian Shield, or Alaska. In this study, we incubated five different soils (rich organic soil from the Canadian Shield and from Siberia (one from the top and one from the deeper soil layer) and one acidic and one non-acidic soil from Alaska) for 6 months under both drained and waterlogged conditions and at different Ca and amorphous Si (ASi) concentrations. Our results show a strong decrease in soil CO2 production for all soils under both drained and waterlogged conditions with increasing Ca concentrations. The ASi effect was not clear across the different soils used, with soil CO2 production increasing, decreasing, or not being significantly affected depending on the soil type and if the soils were initially drained or waterlogged. We found no methane production in any of the soils regardless of treatment. Taking into account the predicted change in Si and Ca availability under a future warmer Arctic climate, the associated fertilization effects would imply potentially lower greenhouse gas production from Siberia and slightly increased greenhouse gas emissions from the Canadian Shield. Including Ca as a controlling factor for Arctic soil CO2 production rates may, therefore, reduces uncertainties in modeling future scenarios on how Arctic regions may respond to climate change. |
format |
Article in Journal/Newspaper |
author |
Peter Stimmler Mathias Göckede Susan M. Natali Oliver Sonnentag Benjamin S. Gilfedder Nia Perron Jörg Schaller |
author_facet |
Peter Stimmler Mathias Göckede Susan M. Natali Oliver Sonnentag Benjamin S. Gilfedder Nia Perron Jörg Schaller |
author_sort |
Peter Stimmler |
title |
The importance of calcium and amorphous silica for arctic soil CO2 production |
title_short |
The importance of calcium and amorphous silica for arctic soil CO2 production |
title_full |
The importance of calcium and amorphous silica for arctic soil CO2 production |
title_fullStr |
The importance of calcium and amorphous silica for arctic soil CO2 production |
title_full_unstemmed |
The importance of calcium and amorphous silica for arctic soil CO2 production |
title_sort |
importance of calcium and amorphous silica for arctic soil co2 production |
publisher |
Frontiers Media S.A. |
publishDate |
2022 |
url |
https://doi.org/10.3389/fenvs.2022.1019610 https://doaj.org/article/8e8b58b7bb7b4e48a831597cecc0456b |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Climate change greenlandic permafrost Alaska Siberia |
genre_facet |
Arctic Climate change greenlandic permafrost Alaska Siberia |
op_source |
Frontiers in Environmental Science, Vol 10 (2022) |
op_relation |
2296-665X doi:10.3389/fenvs.2022.1019610 https://doaj.org/article/8e8b58b7bb7b4e48a831597cecc0456b |
op_rights |
undefined |
op_doi |
https://doi.org/10.3389/fenvs.2022.1019610 |
container_title |
Frontiers in Environmental Science |
container_volume |
10 |
_version_ |
1766315020124160000 |