Review article : Terrestrial dissolved organic carbon in northern permafrost
As the permafrost region warms and permafrost soils thaw, vast stores of soil organic carbon (C) become vulnerable to enhanced microbial decomposition and lateral transport into aquatic ecosystems as dissolved organic carbon (DOC). The mobilization of permafrost soil C can drastically alter the net...
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Uppsala universitet, Limnologi
2024
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ftuppsalauniv:oai:DiVA.org:uu-526679 2024-05-12T08:09:40+00:00 Review article : Terrestrial dissolved organic carbon in northern permafrost Heffernan, Liam Kothawala, Dolly N. Tranvik, Lars J. 2024 application/pdf http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-526679 https://doi.org/10.5194/tc-18-1443-2024 eng eng Uppsala universitet, Limnologi The Cryosphere, 1994-0416, 2024, 18:3, s. 1443-1465 orcid:0000-0003-0145-2167 orcid:0000-0002-6106-6893 orcid:0000-0003-3509-8266 http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-526679 doi:10.5194/tc-18-1443-2024 ISI:001192376900001 info:eu-repo/semantics/openAccess Ecology Ekologi Physical Geography Naturgeografi Article, review/survey info:eu-repo/semantics/article text 2024 ftuppsalauniv https://doi.org/10.5194/tc-18-1443-2024 2024-04-17T14:07:23Z As the permafrost region warms and permafrost soils thaw, vast stores of soil organic carbon (C) become vulnerable to enhanced microbial decomposition and lateral transport into aquatic ecosystems as dissolved organic carbon (DOC). The mobilization of permafrost soil C can drastically alter the net northern permafrost C budget. DOC entering aquatic ecosystems becomes biologically available for degradation as well as other types of aquatic processing. However, it currently remains unclear which landscape characteristics are most relevant to consider in terms of predicting DOC concentrations entering aquatic systems from permafrost regions. Here, we conducted a systematic review of 111 studies relating to, or including, concentrations of DOC in terrestrial permafrost ecosystems in the northern circumpolar region published between 2000 and 2022. We present a new permafrost DOC dataset consisting of 2845 DOC concentrations, collected from the top 3 m in permafrost soils across the northern circumpolar region. Concentrations of DOC ranged from 0.1 to 500 mg L−1 (median = 41 mg L−1) across all permafrost zones, ecoregions, soil types, and thermal horizons. Across the permafrost zones, the highest median DOC concentrations were in the sporadic permafrost zone (101 mg L−1), while lower concentrations were found in the discontinuous (60 mg L−1) and continuous (59 mg L−1) permafrost zones. However, median DOC concentrations varied in these zones across ecosystem type, with the highest median DOC concentrations in each ecosystem type of 66 and 63 mg L−1 found in coastal tundra and permafrost bog ecosystems, respectively. Coastal tundra (130 mg L−1), permafrost bogs (78 mg L−1), and permafrost wetlands (57 mg L−1) had the highest median DOC concentrations in the permafrost lens, representing a potentially long-term store of DOC. Other than in Yedoma ecosystems, DOC concentrations were found to increase following permafrost thaw and were highly constrained by total ... Article in Journal/Newspaper permafrost The Cryosphere Tundra Uppsala University: Publications (DiVA) The Cryosphere 18 3 1443 1465 |
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Open Polar |
collection |
Uppsala University: Publications (DiVA) |
op_collection_id |
ftuppsalauniv |
language |
English |
topic |
Ecology Ekologi Physical Geography Naturgeografi |
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Ecology Ekologi Physical Geography Naturgeografi Heffernan, Liam Kothawala, Dolly N. Tranvik, Lars J. Review article : Terrestrial dissolved organic carbon in northern permafrost |
topic_facet |
Ecology Ekologi Physical Geography Naturgeografi |
description |
As the permafrost region warms and permafrost soils thaw, vast stores of soil organic carbon (C) become vulnerable to enhanced microbial decomposition and lateral transport into aquatic ecosystems as dissolved organic carbon (DOC). The mobilization of permafrost soil C can drastically alter the net northern permafrost C budget. DOC entering aquatic ecosystems becomes biologically available for degradation as well as other types of aquatic processing. However, it currently remains unclear which landscape characteristics are most relevant to consider in terms of predicting DOC concentrations entering aquatic systems from permafrost regions. Here, we conducted a systematic review of 111 studies relating to, or including, concentrations of DOC in terrestrial permafrost ecosystems in the northern circumpolar region published between 2000 and 2022. We present a new permafrost DOC dataset consisting of 2845 DOC concentrations, collected from the top 3 m in permafrost soils across the northern circumpolar region. Concentrations of DOC ranged from 0.1 to 500 mg L−1 (median = 41 mg L−1) across all permafrost zones, ecoregions, soil types, and thermal horizons. Across the permafrost zones, the highest median DOC concentrations were in the sporadic permafrost zone (101 mg L−1), while lower concentrations were found in the discontinuous (60 mg L−1) and continuous (59 mg L−1) permafrost zones. However, median DOC concentrations varied in these zones across ecosystem type, with the highest median DOC concentrations in each ecosystem type of 66 and 63 mg L−1 found in coastal tundra and permafrost bog ecosystems, respectively. Coastal tundra (130 mg L−1), permafrost bogs (78 mg L−1), and permafrost wetlands (57 mg L−1) had the highest median DOC concentrations in the permafrost lens, representing a potentially long-term store of DOC. Other than in Yedoma ecosystems, DOC concentrations were found to increase following permafrost thaw and were highly constrained by total ... |
format |
Article in Journal/Newspaper |
author |
Heffernan, Liam Kothawala, Dolly N. Tranvik, Lars J. |
author_facet |
Heffernan, Liam Kothawala, Dolly N. Tranvik, Lars J. |
author_sort |
Heffernan, Liam |
title |
Review article : Terrestrial dissolved organic carbon in northern permafrost |
title_short |
Review article : Terrestrial dissolved organic carbon in northern permafrost |
title_full |
Review article : Terrestrial dissolved organic carbon in northern permafrost |
title_fullStr |
Review article : Terrestrial dissolved organic carbon in northern permafrost |
title_full_unstemmed |
Review article : Terrestrial dissolved organic carbon in northern permafrost |
title_sort |
review article : terrestrial dissolved organic carbon in northern permafrost |
publisher |
Uppsala universitet, Limnologi |
publishDate |
2024 |
url |
http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-526679 https://doi.org/10.5194/tc-18-1443-2024 |
genre |
permafrost The Cryosphere Tundra |
genre_facet |
permafrost The Cryosphere Tundra |
op_relation |
The Cryosphere, 1994-0416, 2024, 18:3, s. 1443-1465 orcid:0000-0003-0145-2167 orcid:0000-0002-6106-6893 orcid:0000-0003-3509-8266 http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-526679 doi:10.5194/tc-18-1443-2024 ISI:001192376900001 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/tc-18-1443-2024 |
container_title |
The Cryosphere |
container_volume |
18 |
container_issue |
3 |
container_start_page |
1443 |
op_container_end_page |
1465 |
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