Biogeochemistry of carbon, major and trace elements in watersheds of northern Eurasia drained to the Arctic Ocean: The change of fluxes, sources and mechanisms under the climate warming prospective
International audience Warming of the permafrost accompanied by the release of ancient soil organic carbon is one of the most significant environmental threats within the global climate change scenario. While the main sites of permafrost carbon processing and its release to the atmosphere are thermo...
Published in: | Comptes Rendus Geoscience |
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Main Authors: | , , , , , , , , , , |
Other Authors: | , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2012
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Online Access: | https://insu.hal.science/insu-03583000 https://doi.org/10.1016/j.crte.2012.08.003 |
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ftinsu:oai:HAL:insu-03583000v1 |
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Open Polar |
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Institut national des sciences de l'Univers: HAL-INSU |
op_collection_id |
ftinsu |
language |
English |
topic |
[SDU]Sciences of the Universe [physics] |
spellingShingle |
[SDU]Sciences of the Universe [physics] Pokrovsky, Oleg S. Viers, Jérôme Dupré, Bernard Chabaux, François Gaillardet, Jérôme Audry, Stéphane Prokushkin, Anatoly S. Shirokova, Liudmila S. Kirpotin, Sergey N. Lapitsky, Sergey A. Shevchenko, Vladimir P. Biogeochemistry of carbon, major and trace elements in watersheds of northern Eurasia drained to the Arctic Ocean: The change of fluxes, sources and mechanisms under the climate warming prospective |
topic_facet |
[SDU]Sciences of the Universe [physics] |
description |
International audience Warming of the permafrost accompanied by the release of ancient soil organic carbon is one of the most significant environmental threats within the global climate change scenario. While the main sites of permafrost carbon processing and its release to the atmosphere are thermokarst (thaw) lakes and ponds, the main carriers of carbon and related major and trace elements from the land to the Arctic ocean are Russian subarctic rivers. The source of carbon in these rivers is atmospheric C consumed by chemical weathering of rocks and amplified by plant uptake and litter decomposition. This multidisciplinary study describes results of more than a decade of observations and measurements of elements fluxes, stocks and mechanisms in the Russian boreal and subarctic zone, from Karelia region to the Kamchatka peninsula, along the gradient of permafrost-free terrain to continuous permafrost settings, developed on various lithology and vegetation types. We offer a comprehensive, geochemically-based view on the functioning of aquatic boreal systems which quantifies the role of the following factors on riverine element fluxes: (1) the specificity of lithological substrate; (2) the importance of organic and organo-mineral colloidal forms, notably during the snowmelt season; (3) the phenomenon of lakes seasonal overturn; (4) the role of permafrost within the small and large watersheds; and (5) the governing role of terrestrial vegetation in element mobilization from rock substrate to the river. Care of such a multiple approach, a first order prediction of the evolution of element stocks and fluxes under scenario of progressive warming in high latitudes becomes possible. It follows the increase of frozen peat thawing in western Siberia will increase the stocks of elements in surface waters by a factor of 3 to 10 whereas the increase of the thickness of active layer, the biomass and the primary productivity all over permafrost-affected zone will bring about a short-term increase of elements stocks in ... |
author2 |
Géosciences Environnement Toulouse (GET) Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Centre National de la Recherche Scientifique (CNRS) Laboratoire d'Hydrologie et de Géochimie de Strasbourg (LHyGeS) Ecole et Observatoire des Sciences de la Terre (EOST) Université de Strasbourg (UNISTRA)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-École Nationale du Génie de l'Eau et de l'Environnement de Strasbourg (ENGEES)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) Institut de Physique du Globe de Paris (IPGP) Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Université de La Réunion (UR)-Institut de Physique du Globe de Paris (IPG Paris)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Pokrovsky, Oleg S. Viers, Jérôme Dupré, Bernard Chabaux, François Gaillardet, Jérôme Audry, Stéphane Prokushkin, Anatoly S. Shirokova, Liudmila S. Kirpotin, Sergey N. Lapitsky, Sergey A. Shevchenko, Vladimir P. |
author_facet |
Pokrovsky, Oleg S. Viers, Jérôme Dupré, Bernard Chabaux, François Gaillardet, Jérôme Audry, Stéphane Prokushkin, Anatoly S. Shirokova, Liudmila S. Kirpotin, Sergey N. Lapitsky, Sergey A. Shevchenko, Vladimir P. |
author_sort |
Pokrovsky, Oleg S. |
title |
Biogeochemistry of carbon, major and trace elements in watersheds of northern Eurasia drained to the Arctic Ocean: The change of fluxes, sources and mechanisms under the climate warming prospective |
title_short |
Biogeochemistry of carbon, major and trace elements in watersheds of northern Eurasia drained to the Arctic Ocean: The change of fluxes, sources and mechanisms under the climate warming prospective |
title_full |
Biogeochemistry of carbon, major and trace elements in watersheds of northern Eurasia drained to the Arctic Ocean: The change of fluxes, sources and mechanisms under the climate warming prospective |
title_fullStr |
Biogeochemistry of carbon, major and trace elements in watersheds of northern Eurasia drained to the Arctic Ocean: The change of fluxes, sources and mechanisms under the climate warming prospective |
title_full_unstemmed |
Biogeochemistry of carbon, major and trace elements in watersheds of northern Eurasia drained to the Arctic Ocean: The change of fluxes, sources and mechanisms under the climate warming prospective |
title_sort |
biogeochemistry of carbon, major and trace elements in watersheds of northern eurasia drained to the arctic ocean: the change of fluxes, sources and mechanisms under the climate warming prospective |
publisher |
HAL CCSD |
publishDate |
2012 |
url |
https://insu.hal.science/insu-03583000 https://doi.org/10.1016/j.crte.2012.08.003 |
long_lat |
ENVELOPE(160.000,160.000,56.000,56.000) |
geographic |
Arctic Arctic Ocean Kamchatka Peninsula |
geographic_facet |
Arctic Arctic Ocean Kamchatka Peninsula |
genre |
Arctic Arctic Ocean Climate change Kamchatka Kamchatka Peninsula permafrost Subarctic Thermokarst Siberia |
genre_facet |
Arctic Arctic Ocean Climate change Kamchatka Kamchatka Peninsula permafrost Subarctic Thermokarst Siberia |
op_source |
Comptes Rendus Géoscience https://insu.hal.science/insu-03583000 Comptes Rendus Géoscience, 2012, 344, pp.663-677. ⟨10.1016/j.crte.2012.08.003⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.crte.2012.08.003 insu-03583000 https://insu.hal.science/insu-03583000 BIBCODE: 2012CRGeo.344.663P doi:10.1016/j.crte.2012.08.003 |
op_doi |
https://doi.org/10.1016/j.crte.2012.08.003 |
container_title |
Comptes Rendus Geoscience |
container_volume |
344 |
container_issue |
11-12 |
container_start_page |
663 |
op_container_end_page |
677 |
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1785577689907724288 |
spelling |
ftinsu:oai:HAL:insu-03583000v1 2023-12-17T10:26:01+01:00 Biogeochemistry of carbon, major and trace elements in watersheds of northern Eurasia drained to the Arctic Ocean: The change of fluxes, sources and mechanisms under the climate warming prospective Pokrovsky, Oleg S. Viers, Jérôme Dupré, Bernard Chabaux, François Gaillardet, Jérôme Audry, Stéphane Prokushkin, Anatoly S. Shirokova, Liudmila S. Kirpotin, Sergey N. Lapitsky, Sergey A. Shevchenko, Vladimir P. Géosciences Environnement Toulouse (GET) Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Centre National de la Recherche Scientifique (CNRS) Laboratoire d'Hydrologie et de Géochimie de Strasbourg (LHyGeS) Ecole et Observatoire des Sciences de la Terre (EOST) Université de Strasbourg (UNISTRA)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-École Nationale du Génie de l'Eau et de l'Environnement de Strasbourg (ENGEES)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) Institut de Physique du Globe de Paris (IPGP) Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Université de La Réunion (UR)-Institut de Physique du Globe de Paris (IPG Paris)-Centre National de la Recherche Scientifique (CNRS) 2012 https://insu.hal.science/insu-03583000 https://doi.org/10.1016/j.crte.2012.08.003 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.crte.2012.08.003 insu-03583000 https://insu.hal.science/insu-03583000 BIBCODE: 2012CRGeo.344.663P doi:10.1016/j.crte.2012.08.003 Comptes Rendus Géoscience https://insu.hal.science/insu-03583000 Comptes Rendus Géoscience, 2012, 344, pp.663-677. ⟨10.1016/j.crte.2012.08.003⟩ [SDU]Sciences of the Universe [physics] info:eu-repo/semantics/article Journal articles 2012 ftinsu https://doi.org/10.1016/j.crte.2012.08.003 2023-11-22T17:32:39Z International audience Warming of the permafrost accompanied by the release of ancient soil organic carbon is one of the most significant environmental threats within the global climate change scenario. While the main sites of permafrost carbon processing and its release to the atmosphere are thermokarst (thaw) lakes and ponds, the main carriers of carbon and related major and trace elements from the land to the Arctic ocean are Russian subarctic rivers. The source of carbon in these rivers is atmospheric C consumed by chemical weathering of rocks and amplified by plant uptake and litter decomposition. This multidisciplinary study describes results of more than a decade of observations and measurements of elements fluxes, stocks and mechanisms in the Russian boreal and subarctic zone, from Karelia region to the Kamchatka peninsula, along the gradient of permafrost-free terrain to continuous permafrost settings, developed on various lithology and vegetation types. We offer a comprehensive, geochemically-based view on the functioning of aquatic boreal systems which quantifies the role of the following factors on riverine element fluxes: (1) the specificity of lithological substrate; (2) the importance of organic and organo-mineral colloidal forms, notably during the snowmelt season; (3) the phenomenon of lakes seasonal overturn; (4) the role of permafrost within the small and large watersheds; and (5) the governing role of terrestrial vegetation in element mobilization from rock substrate to the river. Care of such a multiple approach, a first order prediction of the evolution of element stocks and fluxes under scenario of progressive warming in high latitudes becomes possible. It follows the increase of frozen peat thawing in western Siberia will increase the stocks of elements in surface waters by a factor of 3 to 10 whereas the increase of the thickness of active layer, the biomass and the primary productivity all over permafrost-affected zone will bring about a short-term increase of elements stocks in ... Article in Journal/Newspaper Arctic Arctic Ocean Climate change Kamchatka Kamchatka Peninsula permafrost Subarctic Thermokarst Siberia Institut national des sciences de l'Univers: HAL-INSU Arctic Arctic Ocean Kamchatka Peninsula ENVELOPE(160.000,160.000,56.000,56.000) Comptes Rendus Geoscience 344 11-12 663 677 |