Multimolecular tracers of terrestrial carbon transfer across the pan-Arctic : 14C characteristics of sedimentary carbon components and their environmental controls
Author Posting. © American Geophysical Union, 2015. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Global Biogeochemical Cycles 29 (2015): 1855–1873, doi:10.1002/2015GB005204. Distinguishing th...
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Online Access: | https://hdl.handle.net/1912/7810 |
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ftwhoas:oai:darchive.mblwhoilibrary.org:1912/7810 2023-05-15T14:41:21+02:00 Multimolecular tracers of terrestrial carbon transfer across the pan-Arctic : 14C characteristics of sedimentary carbon components and their environmental controls Feng, Xiaojuan Gustafsson, Orjan Holmes, Robert M. Vonk, Jorien E. van Dongen, Bart E. Semiletov, Igor P. Dudarev, Oleg V. Yunker, Mark B. Macdonald, Robie W. Wacker, Lukas Montlucon, Daniel B. Eglinton, Timothy I. 2015-11-02 https://hdl.handle.net/1912/7810 en_US eng John Wiley & Sons https://doi.org/10.1002/2015GB005204 Global Biogeochemical Cycles 29 (2015): 1855–1873 https://hdl.handle.net/1912/7810 doi:10.1002/2015GB005204 Global Biogeochemical Cycles 29 (2015): 1855–1873 doi:10.1002/2015GB005204 Compound-specific radiocarbon analysis Terrestrial carbon markers Pan-arctic rivers Diacids Lignin Plant wax lipids Article 2015 ftwhoas https://doi.org/10.1002/2015GB005204 2022-05-28T22:59:30Z Author Posting. © American Geophysical Union, 2015. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Global Biogeochemical Cycles 29 (2015): 1855–1873, doi:10.1002/2015GB005204. Distinguishing the sources, ages, and fate of various terrestrial organic carbon (OC) pools mobilized from heterogeneous Arctic landscapes is key to assessing climatic impacts on the fluvial release of carbon from permafrost. Through molecular 14C measurements, including novel analyses of suberin- and/or cutin-derived diacids (DAs) and hydroxy fatty acids (FAs), we compared the radiocarbon characteristics of a comprehensive suite of terrestrial markers (including plant wax lipids, cutin, suberin, lignin, and hydroxy phenols) in the sedimentary particles from nine major arctic and subarctic rivers in order to establish a benchmark assessment of the mobilization patterns of terrestrial OC pools across the pan-Arctic. Terrestrial lipids, including suberin-derived longer-chain DAs (C24,26,28), plant wax FAs (C24,26,28), and n-alkanes (C27,29,31), incorporated significant inputs of aged carbon, presumably from deeper soil horizons. Mobilization and translocation of these “old” terrestrial carbon components was dependent on nonlinear processes associated with permafrost distributions. By contrast, shorter-chain (C16,18) DAs and lignin phenols (as well as hydroxy phenols in rivers outside eastern Eurasian Arctic) were much more enriched in 14C, suggesting incorporation of relatively young carbon supplied by runoff processes from recent vegetation debris and surface layers. Furthermore, the radiocarbon content of terrestrial markers is heavily influenced by specific OC sources and degradation status. Overall, multitracer molecular 14C analysis sheds new light on the mobilization of terrestrial OC from arctic watersheds. Our findings of distinct ages for various terrestrial carbon components may aid in elucidating fate of different ... Article in Journal/Newspaper Arctic permafrost Subarctic Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) Arctic Global Biogeochemical Cycles 29 11 1855 1873 |
institution |
Open Polar |
collection |
Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) |
op_collection_id |
ftwhoas |
language |
English |
topic |
Compound-specific radiocarbon analysis Terrestrial carbon markers Pan-arctic rivers Diacids Lignin Plant wax lipids |
spellingShingle |
Compound-specific radiocarbon analysis Terrestrial carbon markers Pan-arctic rivers Diacids Lignin Plant wax lipids Feng, Xiaojuan Gustafsson, Orjan Holmes, Robert M. Vonk, Jorien E. van Dongen, Bart E. Semiletov, Igor P. Dudarev, Oleg V. Yunker, Mark B. Macdonald, Robie W. Wacker, Lukas Montlucon, Daniel B. Eglinton, Timothy I. Multimolecular tracers of terrestrial carbon transfer across the pan-Arctic : 14C characteristics of sedimentary carbon components and their environmental controls |
topic_facet |
Compound-specific radiocarbon analysis Terrestrial carbon markers Pan-arctic rivers Diacids Lignin Plant wax lipids |
description |
Author Posting. © American Geophysical Union, 2015. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Global Biogeochemical Cycles 29 (2015): 1855–1873, doi:10.1002/2015GB005204. Distinguishing the sources, ages, and fate of various terrestrial organic carbon (OC) pools mobilized from heterogeneous Arctic landscapes is key to assessing climatic impacts on the fluvial release of carbon from permafrost. Through molecular 14C measurements, including novel analyses of suberin- and/or cutin-derived diacids (DAs) and hydroxy fatty acids (FAs), we compared the radiocarbon characteristics of a comprehensive suite of terrestrial markers (including plant wax lipids, cutin, suberin, lignin, and hydroxy phenols) in the sedimentary particles from nine major arctic and subarctic rivers in order to establish a benchmark assessment of the mobilization patterns of terrestrial OC pools across the pan-Arctic. Terrestrial lipids, including suberin-derived longer-chain DAs (C24,26,28), plant wax FAs (C24,26,28), and n-alkanes (C27,29,31), incorporated significant inputs of aged carbon, presumably from deeper soil horizons. Mobilization and translocation of these “old” terrestrial carbon components was dependent on nonlinear processes associated with permafrost distributions. By contrast, shorter-chain (C16,18) DAs and lignin phenols (as well as hydroxy phenols in rivers outside eastern Eurasian Arctic) were much more enriched in 14C, suggesting incorporation of relatively young carbon supplied by runoff processes from recent vegetation debris and surface layers. Furthermore, the radiocarbon content of terrestrial markers is heavily influenced by specific OC sources and degradation status. Overall, multitracer molecular 14C analysis sheds new light on the mobilization of terrestrial OC from arctic watersheds. Our findings of distinct ages for various terrestrial carbon components may aid in elucidating fate of different ... |
format |
Article in Journal/Newspaper |
author |
Feng, Xiaojuan Gustafsson, Orjan Holmes, Robert M. Vonk, Jorien E. van Dongen, Bart E. Semiletov, Igor P. Dudarev, Oleg V. Yunker, Mark B. Macdonald, Robie W. Wacker, Lukas Montlucon, Daniel B. Eglinton, Timothy I. |
author_facet |
Feng, Xiaojuan Gustafsson, Orjan Holmes, Robert M. Vonk, Jorien E. van Dongen, Bart E. Semiletov, Igor P. Dudarev, Oleg V. Yunker, Mark B. Macdonald, Robie W. Wacker, Lukas Montlucon, Daniel B. Eglinton, Timothy I. |
author_sort |
Feng, Xiaojuan |
title |
Multimolecular tracers of terrestrial carbon transfer across the pan-Arctic : 14C characteristics of sedimentary carbon components and their environmental controls |
title_short |
Multimolecular tracers of terrestrial carbon transfer across the pan-Arctic : 14C characteristics of sedimentary carbon components and their environmental controls |
title_full |
Multimolecular tracers of terrestrial carbon transfer across the pan-Arctic : 14C characteristics of sedimentary carbon components and their environmental controls |
title_fullStr |
Multimolecular tracers of terrestrial carbon transfer across the pan-Arctic : 14C characteristics of sedimentary carbon components and their environmental controls |
title_full_unstemmed |
Multimolecular tracers of terrestrial carbon transfer across the pan-Arctic : 14C characteristics of sedimentary carbon components and their environmental controls |
title_sort |
multimolecular tracers of terrestrial carbon transfer across the pan-arctic : 14c characteristics of sedimentary carbon components and their environmental controls |
publisher |
John Wiley & Sons |
publishDate |
2015 |
url |
https://hdl.handle.net/1912/7810 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic permafrost Subarctic |
genre_facet |
Arctic permafrost Subarctic |
op_source |
Global Biogeochemical Cycles 29 (2015): 1855–1873 doi:10.1002/2015GB005204 |
op_relation |
https://doi.org/10.1002/2015GB005204 Global Biogeochemical Cycles 29 (2015): 1855–1873 https://hdl.handle.net/1912/7810 doi:10.1002/2015GB005204 |
op_doi |
https://doi.org/10.1002/2015GB005204 |
container_title |
Global Biogeochemical Cycles |
container_volume |
29 |
container_issue |
11 |
container_start_page |
1855 |
op_container_end_page |
1873 |
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1766313137628250112 |