Thermokarst processes increase the supply of stabilizing surfaces and elements (Fe, Mn, Al, and Ca) for mineral–organic carbon interactions
Abstract The stabilizing properties of mineral–organic carbon (OC) interactions have been studied in many soil environments (temperate soils, podzol lateritic soils, and paddy soils). Recently, interest in their role in permafrost regions is increasing as permafrost was identified as a hotspot of ch...
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crwiley:10.1002/ppp.2162 2024-06-02T08:08:01+00:00 Thermokarst processes increase the supply of stabilizing surfaces and elements (Fe, Mn, Al, and Ca) for mineral–organic carbon interactions Monhonval, Arthur Strauss, Jens Thomas, Maxime Hirst, Catherine Titeux, Hugues Louis, Justin Gilliot, Alexia du Bois d'Aische, Eléonore Pereira, Benoît Vandeuren, Aubry Grosse, Guido Schirrmeister, Lutz Jongejans, Loeka L. Ulrich, Mathias Opfergelt, Sophie European Research Council Fonds De La Recherche Scientifique - FNRS 2022 http://dx.doi.org/10.1002/ppp.2162 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.2162 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/ppp.2162 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Permafrost and Periglacial Processes volume 33, issue 4, page 452-469 ISSN 1045-6740 1099-1530 journal-article 2022 crwiley https://doi.org/10.1002/ppp.2162 2024-05-03T11:59:33Z Abstract The stabilizing properties of mineral–organic carbon (OC) interactions have been studied in many soil environments (temperate soils, podzol lateritic soils, and paddy soils). Recently, interest in their role in permafrost regions is increasing as permafrost was identified as a hotspot of change. In thawing ice‐rich permafrost regions, such as the Yedoma domain, 327–466 Gt of frozen OC is buried in deep sediments. Interactions between minerals and OC are important because OC is located very near the mineral matrix. Mineral surfaces and elements could mitigate recent and future greenhouse gas emissions through physical and/or physicochemical protection of OC. The dynamic changes in redox and pH conditions associated with thermokarst lake formation and drainage trigger metal‐oxide dissolution and precipitation, likely influencing OC stabilization and microbial mineralization. However, the influence of thermokarst processes on mineral–OC interactions remains poorly constrained. In this study, we aim to characterize Fe, Mn, Al, and Ca minerals and their potential protective role for OC. Total and selective extractions were used to assess the crystalline and amorphous oxides or complexed metal pools as well as the organic acids found within these pools. We analyzed four sediment cores from an ice‐rich permafrost area in Central Yakutia, which were drilled (i) in undisturbed Yedoma uplands, (ii) beneath a recent lake formed within Yedoma deposits, (iii) in a drained thermokarst lake basin, and (iv) beneath a mature thermokarst lake from the early Holocene period. We find a decrease in the amount of reactive Fe, Mn, Al, and Ca in the deposits on lake formation (promoting reduction reactions), and this was largely balanced by an increase in the amount of reactive metals in the deposits on lake drainage (promoting oxidation reactions). We demonstrate an increase in the metal to C molar ratio on thermokarst process, which may indicate an increase in metal–C bindings and could provide a higher protective role ... Article in Journal/Newspaper Ice permafrost Permafrost and Periglacial Processes Thermokarst Yakutia Wiley Online Library Permafrost and Periglacial Processes |
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English |
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Abstract The stabilizing properties of mineral–organic carbon (OC) interactions have been studied in many soil environments (temperate soils, podzol lateritic soils, and paddy soils). Recently, interest in their role in permafrost regions is increasing as permafrost was identified as a hotspot of change. In thawing ice‐rich permafrost regions, such as the Yedoma domain, 327–466 Gt of frozen OC is buried in deep sediments. Interactions between minerals and OC are important because OC is located very near the mineral matrix. Mineral surfaces and elements could mitigate recent and future greenhouse gas emissions through physical and/or physicochemical protection of OC. The dynamic changes in redox and pH conditions associated with thermokarst lake formation and drainage trigger metal‐oxide dissolution and precipitation, likely influencing OC stabilization and microbial mineralization. However, the influence of thermokarst processes on mineral–OC interactions remains poorly constrained. In this study, we aim to characterize Fe, Mn, Al, and Ca minerals and their potential protective role for OC. Total and selective extractions were used to assess the crystalline and amorphous oxides or complexed metal pools as well as the organic acids found within these pools. We analyzed four sediment cores from an ice‐rich permafrost area in Central Yakutia, which were drilled (i) in undisturbed Yedoma uplands, (ii) beneath a recent lake formed within Yedoma deposits, (iii) in a drained thermokarst lake basin, and (iv) beneath a mature thermokarst lake from the early Holocene period. We find a decrease in the amount of reactive Fe, Mn, Al, and Ca in the deposits on lake formation (promoting reduction reactions), and this was largely balanced by an increase in the amount of reactive metals in the deposits on lake drainage (promoting oxidation reactions). We demonstrate an increase in the metal to C molar ratio on thermokarst process, which may indicate an increase in metal–C bindings and could provide a higher protective role ... |
author2 |
European Research Council Fonds De La Recherche Scientifique - FNRS |
format |
Article in Journal/Newspaper |
author |
Monhonval, Arthur Strauss, Jens Thomas, Maxime Hirst, Catherine Titeux, Hugues Louis, Justin Gilliot, Alexia du Bois d'Aische, Eléonore Pereira, Benoît Vandeuren, Aubry Grosse, Guido Schirrmeister, Lutz Jongejans, Loeka L. Ulrich, Mathias Opfergelt, Sophie |
spellingShingle |
Monhonval, Arthur Strauss, Jens Thomas, Maxime Hirst, Catherine Titeux, Hugues Louis, Justin Gilliot, Alexia du Bois d'Aische, Eléonore Pereira, Benoît Vandeuren, Aubry Grosse, Guido Schirrmeister, Lutz Jongejans, Loeka L. Ulrich, Mathias Opfergelt, Sophie Thermokarst processes increase the supply of stabilizing surfaces and elements (Fe, Mn, Al, and Ca) for mineral–organic carbon interactions |
author_facet |
Monhonval, Arthur Strauss, Jens Thomas, Maxime Hirst, Catherine Titeux, Hugues Louis, Justin Gilliot, Alexia du Bois d'Aische, Eléonore Pereira, Benoît Vandeuren, Aubry Grosse, Guido Schirrmeister, Lutz Jongejans, Loeka L. Ulrich, Mathias Opfergelt, Sophie |
author_sort |
Monhonval, Arthur |
title |
Thermokarst processes increase the supply of stabilizing surfaces and elements (Fe, Mn, Al, and Ca) for mineral–organic carbon interactions |
title_short |
Thermokarst processes increase the supply of stabilizing surfaces and elements (Fe, Mn, Al, and Ca) for mineral–organic carbon interactions |
title_full |
Thermokarst processes increase the supply of stabilizing surfaces and elements (Fe, Mn, Al, and Ca) for mineral–organic carbon interactions |
title_fullStr |
Thermokarst processes increase the supply of stabilizing surfaces and elements (Fe, Mn, Al, and Ca) for mineral–organic carbon interactions |
title_full_unstemmed |
Thermokarst processes increase the supply of stabilizing surfaces and elements (Fe, Mn, Al, and Ca) for mineral–organic carbon interactions |
title_sort |
thermokarst processes increase the supply of stabilizing surfaces and elements (fe, mn, al, and ca) for mineral–organic carbon interactions |
publisher |
Wiley |
publishDate |
2022 |
url |
http://dx.doi.org/10.1002/ppp.2162 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.2162 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/ppp.2162 |
genre |
Ice permafrost Permafrost and Periglacial Processes Thermokarst Yakutia |
genre_facet |
Ice permafrost Permafrost and Periglacial Processes Thermokarst Yakutia |
op_source |
Permafrost and Periglacial Processes volume 33, issue 4, page 452-469 ISSN 1045-6740 1099-1530 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/ppp.2162 |
container_title |
Permafrost and Periglacial Processes |
_version_ |
1800753170105761792 |