Dissolved organic carbon (DOC) in Arctic ground ice
Thermal permafrost degradation and coastal erosion in the Arctic remobilize substantial amounts of organic carbon (OC) and nutrients which have accumulated in late Pleistocene and Holocene unconsolidated deposits. Permafrost vulnerability to thaw subsidence, collapsing coastlines and irreversible la...
Published in: | The Cryosphere |
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Copernicus Publications
2015
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Online Access: | https://epic.awi.de/id/eprint/37855/ https://epic.awi.de/id/eprint/37855/1/Fritz_et_al_2015_Dissolved_organic_carbon_%28DOC%29_in_Arctic_ground_ice.pdf https://epic.awi.de/id/eprint/37855/2/Fritz_et_al_2015_DOC_Supplement.pdf https://hdl.handle.net/10013/epic.45446 https://hdl.handle.net/10013/epic.45446.d001 https://hdl.handle.net/10013/epic.45446.d002 |
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ftawi:oai:epic.awi.de:37855 2023-05-15T14:28:01+02:00 Dissolved organic carbon (DOC) in Arctic ground ice Fritz, Michael Opel, Thomas Tanski, George Herzschuh, Ulrike Meyer, Hanno Eulenburg, Antje Lantuit, Hugues 2015-04-20 application/pdf https://epic.awi.de/id/eprint/37855/ https://epic.awi.de/id/eprint/37855/1/Fritz_et_al_2015_Dissolved_organic_carbon_%28DOC%29_in_Arctic_ground_ice.pdf https://epic.awi.de/id/eprint/37855/2/Fritz_et_al_2015_DOC_Supplement.pdf https://hdl.handle.net/10013/epic.45446 https://hdl.handle.net/10013/epic.45446.d001 https://hdl.handle.net/10013/epic.45446.d002 unknown Copernicus Publications https://epic.awi.de/id/eprint/37855/1/Fritz_et_al_2015_Dissolved_organic_carbon_%28DOC%29_in_Arctic_ground_ice.pdf https://hdl.handle.net/10013/epic.45446.d001 https://epic.awi.de/id/eprint/37855/2/Fritz_et_al_2015_DOC_Supplement.pdf https://hdl.handle.net/10013/epic.45446.d002 Fritz, M. orcid:0000-0003-4591-7325 , Opel, T. orcid:0000-0003-1315-8256 , Tanski, G. , Herzschuh, U. orcid:0000-0003-0999-1261 , Meyer, H. orcid:0000-0003-4129-4706 , Eulenburg, A. and Lantuit, H. orcid:0000-0003-1497-6760 (2015) Dissolved organic carbon (DOC) in Arctic ground ice , The Cryosphere, 9 (2), pp. 737-752 . doi:10.5194/tc-9-737-2015 <https://doi.org/10.5194/tc-9-737-2015> , hdl:10013/epic.45446 EPIC3The Cryosphere, Copernicus Publications, 9(2), pp. 737-752, ISSN: 1994-0424 Article NonPeerReviewed 2015 ftawi https://doi.org/10.5194/tc-9-737-2015 2022-08-14T23:12:30Z Thermal permafrost degradation and coastal erosion in the Arctic remobilize substantial amounts of organic carbon (OC) and nutrients which have accumulated in late Pleistocene and Holocene unconsolidated deposits. Permafrost vulnerability to thaw subsidence, collapsing coastlines and irreversible landscape change are largely due to the presence of large amounts of massive ground ice such as ice wedges. However, ground ice has not, until now, been considered to be a source of dissolved organic carbon (DOC), dissolved inorganic carbon (DIC) and other elements which are important for ecosystems and carbon cycling. Here we show, using biogeochemical data from a large number of different ice bodies throughout the Arctic, that ice wedges have the greatest potential for DOC storage, with a maximum of 28.6 mg L−1 (mean: 9.6 mg L−1). Variation in DOC concentration is positively correlated with and explained by the concentrations and relative amounts of typically terrestrial cations such as Mg2+ and K+. DOC sequestration into ground ice was more effective during the late Pleistocene than during the Holocene, which can be explained by rapid sediment and OC accumulation, the prevalence of more easily degradable vegetation and immediate incorporation into permafrost. We assume that pristine snowmelt is able to leach considerable amounts of well-preserved and highly bioavailable DOC as well as other elements from surface sediments, which are rapidly frozen and stored in ground ice, especially in ice wedges, even before further degradation. We found that ice wedges in the Yedoma region represent a significant DOC (45.2 Tg) and DIC (33.6 Tg) pool in permafrost areas and a freshwater reservoir of 4200 km³. This study underlines the need to discriminate between particulate OC and DOC to assess the availability and vulnerability of the permafrost carbon pool for ecosystems and climate feedback upon mobilization. Article in Journal/Newspaper Arctic Arctic Ice permafrost The Cryosphere wedge* Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Arctic The Cryosphere 9 2 737 752 |
institution |
Open Polar |
collection |
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
description |
Thermal permafrost degradation and coastal erosion in the Arctic remobilize substantial amounts of organic carbon (OC) and nutrients which have accumulated in late Pleistocene and Holocene unconsolidated deposits. Permafrost vulnerability to thaw subsidence, collapsing coastlines and irreversible landscape change are largely due to the presence of large amounts of massive ground ice such as ice wedges. However, ground ice has not, until now, been considered to be a source of dissolved organic carbon (DOC), dissolved inorganic carbon (DIC) and other elements which are important for ecosystems and carbon cycling. Here we show, using biogeochemical data from a large number of different ice bodies throughout the Arctic, that ice wedges have the greatest potential for DOC storage, with a maximum of 28.6 mg L−1 (mean: 9.6 mg L−1). Variation in DOC concentration is positively correlated with and explained by the concentrations and relative amounts of typically terrestrial cations such as Mg2+ and K+. DOC sequestration into ground ice was more effective during the late Pleistocene than during the Holocene, which can be explained by rapid sediment and OC accumulation, the prevalence of more easily degradable vegetation and immediate incorporation into permafrost. We assume that pristine snowmelt is able to leach considerable amounts of well-preserved and highly bioavailable DOC as well as other elements from surface sediments, which are rapidly frozen and stored in ground ice, especially in ice wedges, even before further degradation. We found that ice wedges in the Yedoma region represent a significant DOC (45.2 Tg) and DIC (33.6 Tg) pool in permafrost areas and a freshwater reservoir of 4200 km³. This study underlines the need to discriminate between particulate OC and DOC to assess the availability and vulnerability of the permafrost carbon pool for ecosystems and climate feedback upon mobilization. |
format |
Article in Journal/Newspaper |
author |
Fritz, Michael Opel, Thomas Tanski, George Herzschuh, Ulrike Meyer, Hanno Eulenburg, Antje Lantuit, Hugues |
spellingShingle |
Fritz, Michael Opel, Thomas Tanski, George Herzschuh, Ulrike Meyer, Hanno Eulenburg, Antje Lantuit, Hugues Dissolved organic carbon (DOC) in Arctic ground ice |
author_facet |
Fritz, Michael Opel, Thomas Tanski, George Herzschuh, Ulrike Meyer, Hanno Eulenburg, Antje Lantuit, Hugues |
author_sort |
Fritz, Michael |
title |
Dissolved organic carbon (DOC) in Arctic ground ice |
title_short |
Dissolved organic carbon (DOC) in Arctic ground ice |
title_full |
Dissolved organic carbon (DOC) in Arctic ground ice |
title_fullStr |
Dissolved organic carbon (DOC) in Arctic ground ice |
title_full_unstemmed |
Dissolved organic carbon (DOC) in Arctic ground ice |
title_sort |
dissolved organic carbon (doc) in arctic ground ice |
publisher |
Copernicus Publications |
publishDate |
2015 |
url |
https://epic.awi.de/id/eprint/37855/ https://epic.awi.de/id/eprint/37855/1/Fritz_et_al_2015_Dissolved_organic_carbon_%28DOC%29_in_Arctic_ground_ice.pdf https://epic.awi.de/id/eprint/37855/2/Fritz_et_al_2015_DOC_Supplement.pdf https://hdl.handle.net/10013/epic.45446 https://hdl.handle.net/10013/epic.45446.d001 https://hdl.handle.net/10013/epic.45446.d002 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Arctic Ice permafrost The Cryosphere wedge* |
genre_facet |
Arctic Arctic Ice permafrost The Cryosphere wedge* |
op_source |
EPIC3The Cryosphere, Copernicus Publications, 9(2), pp. 737-752, ISSN: 1994-0424 |
op_relation |
https://epic.awi.de/id/eprint/37855/1/Fritz_et_al_2015_Dissolved_organic_carbon_%28DOC%29_in_Arctic_ground_ice.pdf https://hdl.handle.net/10013/epic.45446.d001 https://epic.awi.de/id/eprint/37855/2/Fritz_et_al_2015_DOC_Supplement.pdf https://hdl.handle.net/10013/epic.45446.d002 Fritz, M. orcid:0000-0003-4591-7325 , Opel, T. orcid:0000-0003-1315-8256 , Tanski, G. , Herzschuh, U. orcid:0000-0003-0999-1261 , Meyer, H. orcid:0000-0003-4129-4706 , Eulenburg, A. and Lantuit, H. orcid:0000-0003-1497-6760 (2015) Dissolved organic carbon (DOC) in Arctic ground ice , The Cryosphere, 9 (2), pp. 737-752 . doi:10.5194/tc-9-737-2015 <https://doi.org/10.5194/tc-9-737-2015> , hdl:10013/epic.45446 |
op_doi |
https://doi.org/10.5194/tc-9-737-2015 |
container_title |
The Cryosphere |
container_volume |
9 |
container_issue |
2 |
container_start_page |
737 |
op_container_end_page |
752 |
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1766302152899166208 |