Differential mobilization of terrestrial carbon pools in Eurasian Arctic river basins
Mobilization of Arctic permafrost carbon is expected to increase with warming-induced thawing. However, this effect is challenging to assess due to the diverse processes controlling the release of various organic carbon (OC) pools from heterogeneous Arctic landscapes. Here, by radiocarbon dating var...
Published in: | Proceedings of the National Academy of Sciences |
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Main Authors: | , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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2013
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Online Access: | https://research.vu.nl/en/publications/40eb9e6d-b60d-47a8-a5ea-ad587ddcdc25 https://doi.org/10.1073/pnas.1307031110 https://hdl.handle.net/1871.1/40eb9e6d-b60d-47a8-a5ea-ad587ddcdc25 http://www.scopus.com/inward/record.url?scp=84883363511&partnerID=8YFLogxK http://www.scopus.com/inward/citedby.url?scp=84883363511&partnerID=8YFLogxK |
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ftvuamstcris:oai:research.vu.nl:publications/40eb9e6d-b60d-47a8-a5ea-ad587ddcdc25 2024-06-23T07:48:42+00:00 Differential mobilization of terrestrial carbon pools in Eurasian Arctic river basins Feng, Xiaojuan Vonk, Jorien E. Van Dongen, Bart E. Gustafsson, Örjan Semiletov, Igor P. Dudarev, Oleg V. Wang, Zhiheng Montluçon, Daniel B. Wacker, Lukas Eglinton, Timothy I. 2013-08-27 https://research.vu.nl/en/publications/40eb9e6d-b60d-47a8-a5ea-ad587ddcdc25 https://doi.org/10.1073/pnas.1307031110 https://hdl.handle.net/1871.1/40eb9e6d-b60d-47a8-a5ea-ad587ddcdc25 http://www.scopus.com/inward/record.url?scp=84883363511&partnerID=8YFLogxK http://www.scopus.com/inward/citedby.url?scp=84883363511&partnerID=8YFLogxK eng eng https://research.vu.nl/en/publications/40eb9e6d-b60d-47a8-a5ea-ad587ddcdc25 info:eu-repo/semantics/restrictedAccess Feng , X , Vonk , J E , Van Dongen , B E , Gustafsson , Ö , Semiletov , I P , Dudarev , O V , Wang , Z , Montluçon , D B , Wacker , L & Eglinton , T I 2013 , ' Differential mobilization of terrestrial carbon pools in Eurasian Arctic river basins ' , Proceedings of the National Academy of Sciences of the United States of America , vol. 110 , no. 35 , pp. 14168-14173 . https://doi.org/10.1073/pnas.1307031110 Compound-specific 14C Fluvial mobilization Hydrogeographic control /dk/atira/pure/sustainabledevelopmentgoals/climate_action name=SDG 13 - Climate Action /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water article 2013 ftvuamstcris https://doi.org/10.1073/pnas.1307031110 2024-06-06T00:09:31Z Mobilization of Arctic permafrost carbon is expected to increase with warming-induced thawing. However, this effect is challenging to assess due to the diverse processes controlling the release of various organic carbon (OC) pools from heterogeneous Arctic landscapes. Here, by radiocarbon dating various terrestrial OC components in fluvially and coastally integrated estuarine sediments, we present a unique framework for deconvoluting the contrasting mobilization mechanisms of surface vs. deep (permafrost) carbon pools across the climosequence of the Eurasian Arctic. Vascular plant-derived lignin phenol 14 C contents reveal significant inputs of young carbon from surface sources whose delivery is dominantly controlled by river runoff. In contrast, plant wax lipids predominantly trace ancient (permafrost) OC that is preferentially mobilized from discontinuous permafrost regions, where hydrological conduits penetrate deeper into soils and thermokarst erosion occurs more frequently. Because river runoff has significantly increased across the Eurasian Arctic in recent decades, we estimate from an isotopic mixing model that, in tandem with an increased transfer of young surface carbon, the proportion of mobilized terrestrial OC accounted for by ancient carbon has increased by 3-6% between 1985 and 2004. These findings suggest that although partly masked by surface carbon export, climate change-induced mobilization of old permafrost carbon is well underway in the Arctic. Article in Journal/Newspaper Arctic Arctic Climate change permafrost Thermokarst Vrije Universiteit Amsterdam (VU): Research Portal Arctic Proceedings of the National Academy of Sciences 110 35 14168 14173 |
institution |
Open Polar |
collection |
Vrije Universiteit Amsterdam (VU): Research Portal |
op_collection_id |
ftvuamstcris |
language |
English |
topic |
Compound-specific 14C Fluvial mobilization Hydrogeographic control /dk/atira/pure/sustainabledevelopmentgoals/climate_action name=SDG 13 - Climate Action /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water |
spellingShingle |
Compound-specific 14C Fluvial mobilization Hydrogeographic control /dk/atira/pure/sustainabledevelopmentgoals/climate_action name=SDG 13 - Climate Action /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water Feng, Xiaojuan Vonk, Jorien E. Van Dongen, Bart E. Gustafsson, Örjan Semiletov, Igor P. Dudarev, Oleg V. Wang, Zhiheng Montluçon, Daniel B. Wacker, Lukas Eglinton, Timothy I. Differential mobilization of terrestrial carbon pools in Eurasian Arctic river basins |
topic_facet |
Compound-specific 14C Fluvial mobilization Hydrogeographic control /dk/atira/pure/sustainabledevelopmentgoals/climate_action name=SDG 13 - Climate Action /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water |
description |
Mobilization of Arctic permafrost carbon is expected to increase with warming-induced thawing. However, this effect is challenging to assess due to the diverse processes controlling the release of various organic carbon (OC) pools from heterogeneous Arctic landscapes. Here, by radiocarbon dating various terrestrial OC components in fluvially and coastally integrated estuarine sediments, we present a unique framework for deconvoluting the contrasting mobilization mechanisms of surface vs. deep (permafrost) carbon pools across the climosequence of the Eurasian Arctic. Vascular plant-derived lignin phenol 14 C contents reveal significant inputs of young carbon from surface sources whose delivery is dominantly controlled by river runoff. In contrast, plant wax lipids predominantly trace ancient (permafrost) OC that is preferentially mobilized from discontinuous permafrost regions, where hydrological conduits penetrate deeper into soils and thermokarst erosion occurs more frequently. Because river runoff has significantly increased across the Eurasian Arctic in recent decades, we estimate from an isotopic mixing model that, in tandem with an increased transfer of young surface carbon, the proportion of mobilized terrestrial OC accounted for by ancient carbon has increased by 3-6% between 1985 and 2004. These findings suggest that although partly masked by surface carbon export, climate change-induced mobilization of old permafrost carbon is well underway in the Arctic. |
format |
Article in Journal/Newspaper |
author |
Feng, Xiaojuan Vonk, Jorien E. Van Dongen, Bart E. Gustafsson, Örjan Semiletov, Igor P. Dudarev, Oleg V. Wang, Zhiheng Montluçon, Daniel B. Wacker, Lukas Eglinton, Timothy I. |
author_facet |
Feng, Xiaojuan Vonk, Jorien E. Van Dongen, Bart E. Gustafsson, Örjan Semiletov, Igor P. Dudarev, Oleg V. Wang, Zhiheng Montluçon, Daniel B. Wacker, Lukas Eglinton, Timothy I. |
author_sort |
Feng, Xiaojuan |
title |
Differential mobilization of terrestrial carbon pools in Eurasian Arctic river basins |
title_short |
Differential mobilization of terrestrial carbon pools in Eurasian Arctic river basins |
title_full |
Differential mobilization of terrestrial carbon pools in Eurasian Arctic river basins |
title_fullStr |
Differential mobilization of terrestrial carbon pools in Eurasian Arctic river basins |
title_full_unstemmed |
Differential mobilization of terrestrial carbon pools in Eurasian Arctic river basins |
title_sort |
differential mobilization of terrestrial carbon pools in eurasian arctic river basins |
publishDate |
2013 |
url |
https://research.vu.nl/en/publications/40eb9e6d-b60d-47a8-a5ea-ad587ddcdc25 https://doi.org/10.1073/pnas.1307031110 https://hdl.handle.net/1871.1/40eb9e6d-b60d-47a8-a5ea-ad587ddcdc25 http://www.scopus.com/inward/record.url?scp=84883363511&partnerID=8YFLogxK http://www.scopus.com/inward/citedby.url?scp=84883363511&partnerID=8YFLogxK |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Arctic Climate change permafrost Thermokarst |
genre_facet |
Arctic Arctic Climate change permafrost Thermokarst |
op_source |
Feng , X , Vonk , J E , Van Dongen , B E , Gustafsson , Ö , Semiletov , I P , Dudarev , O V , Wang , Z , Montluçon , D B , Wacker , L & Eglinton , T I 2013 , ' Differential mobilization of terrestrial carbon pools in Eurasian Arctic river basins ' , Proceedings of the National Academy of Sciences of the United States of America , vol. 110 , no. 35 , pp. 14168-14173 . https://doi.org/10.1073/pnas.1307031110 |
op_relation |
https://research.vu.nl/en/publications/40eb9e6d-b60d-47a8-a5ea-ad587ddcdc25 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1073/pnas.1307031110 |
container_title |
Proceedings of the National Academy of Sciences |
container_volume |
110 |
container_issue |
35 |
container_start_page |
14168 |
op_container_end_page |
14173 |
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1802639023432269824 |