Impact of freeze-thaw cycles on organic carbon and metals in waters of permafrost peatlands
International audience Despite the importance of soil and surface waters freezing in permafrost landscapes, the behaviour of dissolved organic carbon (DOC), nutrients and metals during periodic freezethaw cycles (FTC) remains poorly known. The ongoing climate warming is likely to increase the freque...
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Online Access: | https://doi.org/10.1016/j.chemosphere.2021.130510 https://hal.archives-ouvertes.fr/hal-03363287/file/Freeze-Thaw%20cycles_%20Payandi%20Rolland_2021.pdf https://hal.archives-ouvertes.fr/hal-03363287 |
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fttriple:oai:gotriple.eu:10670/1.oe84n6 2023-05-15T15:08:10+02:00 Impact of freeze-thaw cycles on organic carbon and metals in waters of permafrost peatlands Payandi-Rolland, Dahédrey Shirokova, Liudmila, Labonne, Fabian Bénézeth, Pascale Pokrovsky, Oleg Université Toulouse III - Paul Sabatier (UT3) Université Fédérale Toulouse Midi-Pyrénées Centre National de la Recherche Scientifique (CNRS) 2021-09-01 https://doi.org/10.1016/j.chemosphere.2021.130510 https://hal.archives-ouvertes.fr/hal-03363287/file/Freeze-Thaw%20cycles_%20Payandi%20Rolland_2021.pdf https://hal.archives-ouvertes.fr/hal-03363287 en eng HAL CCSD Elsevier hal-03363287 doi:10.1016/j.chemosphere.2021.130510 10670/1.oe84n6 https://hal.archives-ouvertes.fr/hal-03363287/file/Freeze-Thaw%20cycles_%20Payandi%20Rolland_2021.pdf https://hal.archives-ouvertes.fr/hal-03363287 other Hyper Article en Ligne - Sciences de l'Homme et de la Société ISSN: 0045-6535 Chemosphere Chemosphere, Elsevier, 2021, 279, pp.130510. ⟨10.1016/j.chemosphere.2021.130510⟩ ice moss lichen peat thermokarst lake river 2 envir geo Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2021 fttriple https://doi.org/10.1016/j.chemosphere.2021.130510 2023-01-22T16:40:37Z International audience Despite the importance of soil and surface waters freezing in permafrost landscapes, the behaviour of dissolved organic carbon (DOC), nutrients and metals during periodic freezethaw cycles (FTC) remains poorly known. The ongoing climate warming is likely to increase the frequency of FTC in continental aquatic settings, which could modify the chemical composition of waters. In this study, we conducted 9 repetitive cycles of overnight freezing (-20 °C) and 5 hours thawing (4°C) in the laboratory using representative 0.22 µm-filtered waters from NE European permafrost peatland: leachates of vegetation and soil, and natural surface waters (depression, thermokarst lake and river). Only minor ( 10%). The leachates and the depression water were enriched in trace elements, whereas the thermokarst lake and the river demonstrated a decrease in concentration of Fe (-39 and-94 %, respectively), Al (-9 and-85 %), and Mn (-10 and-79 %) during FTC. Overall, the observations demonstrated an increase in aliphatic low molecular weight organic matter (OM), and the precipitation of Fe, Al hydroxides and organo-mineral particles. Therefore, enhanced of frequency of FTC can favour the release of metals and toxicants from acidic OM-rich surface waters and maintain stable OM-metals-colloids in large lakes and rivers, thus regulating aquatic transport of DOC and metals from soils to the Arctic Ocean. Article in Journal/Newspaper Arctic Arctic Ocean Ice permafrost Thermokarst Unknown Arctic Arctic Ocean Chemosphere 279 130510 |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
fttriple |
language |
English |
topic |
ice moss lichen peat thermokarst lake river 2 envir geo |
spellingShingle |
ice moss lichen peat thermokarst lake river 2 envir geo Payandi-Rolland, Dahédrey Shirokova, Liudmila, Labonne, Fabian Bénézeth, Pascale Pokrovsky, Oleg Impact of freeze-thaw cycles on organic carbon and metals in waters of permafrost peatlands |
topic_facet |
ice moss lichen peat thermokarst lake river 2 envir geo |
description |
International audience Despite the importance of soil and surface waters freezing in permafrost landscapes, the behaviour of dissolved organic carbon (DOC), nutrients and metals during periodic freezethaw cycles (FTC) remains poorly known. The ongoing climate warming is likely to increase the frequency of FTC in continental aquatic settings, which could modify the chemical composition of waters. In this study, we conducted 9 repetitive cycles of overnight freezing (-20 °C) and 5 hours thawing (4°C) in the laboratory using representative 0.22 µm-filtered waters from NE European permafrost peatland: leachates of vegetation and soil, and natural surface waters (depression, thermokarst lake and river). Only minor ( 10%). The leachates and the depression water were enriched in trace elements, whereas the thermokarst lake and the river demonstrated a decrease in concentration of Fe (-39 and-94 %, respectively), Al (-9 and-85 %), and Mn (-10 and-79 %) during FTC. Overall, the observations demonstrated an increase in aliphatic low molecular weight organic matter (OM), and the precipitation of Fe, Al hydroxides and organo-mineral particles. Therefore, enhanced of frequency of FTC can favour the release of metals and toxicants from acidic OM-rich surface waters and maintain stable OM-metals-colloids in large lakes and rivers, thus regulating aquatic transport of DOC and metals from soils to the Arctic Ocean. |
author2 |
Université Toulouse III - Paul Sabatier (UT3) Université Fédérale Toulouse Midi-Pyrénées Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Payandi-Rolland, Dahédrey Shirokova, Liudmila, Labonne, Fabian Bénézeth, Pascale Pokrovsky, Oleg |
author_facet |
Payandi-Rolland, Dahédrey Shirokova, Liudmila, Labonne, Fabian Bénézeth, Pascale Pokrovsky, Oleg |
author_sort |
Payandi-Rolland, Dahédrey |
title |
Impact of freeze-thaw cycles on organic carbon and metals in waters of permafrost peatlands |
title_short |
Impact of freeze-thaw cycles on organic carbon and metals in waters of permafrost peatlands |
title_full |
Impact of freeze-thaw cycles on organic carbon and metals in waters of permafrost peatlands |
title_fullStr |
Impact of freeze-thaw cycles on organic carbon and metals in waters of permafrost peatlands |
title_full_unstemmed |
Impact of freeze-thaw cycles on organic carbon and metals in waters of permafrost peatlands |
title_sort |
impact of freeze-thaw cycles on organic carbon and metals in waters of permafrost peatlands |
publisher |
HAL CCSD |
publishDate |
2021 |
url |
https://doi.org/10.1016/j.chemosphere.2021.130510 https://hal.archives-ouvertes.fr/hal-03363287/file/Freeze-Thaw%20cycles_%20Payandi%20Rolland_2021.pdf https://hal.archives-ouvertes.fr/hal-03363287 |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Ocean Ice permafrost Thermokarst |
genre_facet |
Arctic Arctic Ocean Ice permafrost Thermokarst |
op_source |
Hyper Article en Ligne - Sciences de l'Homme et de la Société ISSN: 0045-6535 Chemosphere Chemosphere, Elsevier, 2021, 279, pp.130510. ⟨10.1016/j.chemosphere.2021.130510⟩ |
op_relation |
hal-03363287 doi:10.1016/j.chemosphere.2021.130510 10670/1.oe84n6 https://hal.archives-ouvertes.fr/hal-03363287/file/Freeze-Thaw%20cycles_%20Payandi%20Rolland_2021.pdf https://hal.archives-ouvertes.fr/hal-03363287 |
op_rights |
other |
op_doi |
https://doi.org/10.1016/j.chemosphere.2021.130510 |
container_title |
Chemosphere |
container_volume |
279 |
container_start_page |
130510 |
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1766339580174270464 |