Multi-molecular tracers of terrestrial carbon transfer across the pan-Arctic : comparison of hydrolyzable components with plant wax lipids and lignin phenols
© The Author(s), 2015. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Biogeosciences 12 (2015): 4841-4860, doi:10.5194/bg-12-4841-2015. Hydrolyzable organic carbon (OC) comprises a significant component of sedimentary...
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ftwhoas:oai:darchive.mblwhoilibrary.org:1912/7534 2023-05-15T14:53:03+02:00 Multi-molecular tracers of terrestrial carbon transfer across the pan-Arctic : comparison of hydrolyzable components with plant wax lipids and lignin phenols 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. Montlucon, Daniel B. Eglinton, Timothy I. 2015-08-15 application/pdf https://hdl.handle.net/1912/7534 en_US eng Copernicus Publications on behalf of the European Geosciences Union https://doi.org/10.5194/bg-12-4841-2015 Biogeosciences 12 (2015): 4841-4860 https://hdl.handle.net/1912/7534 doi:10.5194/bg-12-4841-2015 Attribution 3.0 Unported http://creativecommons.org/licenses/by/3.0/ CC-BY Biogeosciences 12 (2015): 4841-4860 doi:10.5194/bg-12-4841-2015 Article 2015 ftwhoas https://doi.org/10.5194/bg-12-4841-2015 2022-05-28T22:59:25Z © The Author(s), 2015. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Biogeosciences 12 (2015): 4841-4860, doi:10.5194/bg-12-4841-2015. Hydrolyzable organic carbon (OC) comprises a significant component of sedimentary particulate matter transferred from land into oceans via rivers. Its abundance and nature are however not well studied in Arctic river systems, and yet may represent an important pool of carbon whose fate remains unclear in the context of mobilization and related processes associated with a changing climate. Here, we examine the molecular composition and source of hydrolyzable compounds isolated from sedimentary particles derived from nine rivers across the pan-Arctic. Bound fatty acids (b-FAs), hydroxy FAs, n-alkane-α,ω-dioic acids (DAs) and phenols were the major components released upon hydrolysis of these sediments. Among them, b-FAs received considerable inputs from bacterial and/or algal sources, whereas ω-hydroxy FAs, mid-chain substituted acids, DAs, and hydrolyzable phenols were mainly derived from cutin and suberin of higher plants. We further compared the distribution and fate of suberin- and cutin-derived compounds with those of other terrestrial biomarkers (plant wax lipids and lignin phenols) from the same Arctic river sedimentary particles and conducted a benchmark assessment of several biomarker-based indicators of OC source and extent of degradation. While suberin-specific biomarkers were positively correlated with plant-derived high-molecular-weight (HMW) FAs, lignin phenols were correlated with cutin-derived compounds. These correlations suggest that, similar to leaf-derived cutin, lignin was mainly derived from litter and surface soil horizons, whereas suberin and HMW FAs incorporated significant inputs from belowground sources (roots and deeper soil). This conclusion is supported by the negative correlation between lignin phenols and the ratio of suberin-to-cutin biomarkers. Furthermore, the ... Article in Journal/Newspaper Arctic Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) Arctic Biogeosciences 12 15 4841 4860 |
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Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) |
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English |
description |
© The Author(s), 2015. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Biogeosciences 12 (2015): 4841-4860, doi:10.5194/bg-12-4841-2015. Hydrolyzable organic carbon (OC) comprises a significant component of sedimentary particulate matter transferred from land into oceans via rivers. Its abundance and nature are however not well studied in Arctic river systems, and yet may represent an important pool of carbon whose fate remains unclear in the context of mobilization and related processes associated with a changing climate. Here, we examine the molecular composition and source of hydrolyzable compounds isolated from sedimentary particles derived from nine rivers across the pan-Arctic. Bound fatty acids (b-FAs), hydroxy FAs, n-alkane-α,ω-dioic acids (DAs) and phenols were the major components released upon hydrolysis of these sediments. Among them, b-FAs received considerable inputs from bacterial and/or algal sources, whereas ω-hydroxy FAs, mid-chain substituted acids, DAs, and hydrolyzable phenols were mainly derived from cutin and suberin of higher plants. We further compared the distribution and fate of suberin- and cutin-derived compounds with those of other terrestrial biomarkers (plant wax lipids and lignin phenols) from the same Arctic river sedimentary particles and conducted a benchmark assessment of several biomarker-based indicators of OC source and extent of degradation. While suberin-specific biomarkers were positively correlated with plant-derived high-molecular-weight (HMW) FAs, lignin phenols were correlated with cutin-derived compounds. These correlations suggest that, similar to leaf-derived cutin, lignin was mainly derived from litter and surface soil horizons, whereas suberin and HMW FAs incorporated significant inputs from belowground sources (roots and deeper soil). This conclusion is supported by the negative correlation between lignin phenols and the ratio of suberin-to-cutin biomarkers. Furthermore, the ... |
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. Montlucon, Daniel B. Eglinton, Timothy I. |
spellingShingle |
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. Montlucon, Daniel B. Eglinton, Timothy I. Multi-molecular tracers of terrestrial carbon transfer across the pan-Arctic : comparison of hydrolyzable components with plant wax lipids and lignin phenols |
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. Montlucon, Daniel B. Eglinton, Timothy I. |
author_sort |
Feng, Xiaojuan |
title |
Multi-molecular tracers of terrestrial carbon transfer across the pan-Arctic : comparison of hydrolyzable components with plant wax lipids and lignin phenols |
title_short |
Multi-molecular tracers of terrestrial carbon transfer across the pan-Arctic : comparison of hydrolyzable components with plant wax lipids and lignin phenols |
title_full |
Multi-molecular tracers of terrestrial carbon transfer across the pan-Arctic : comparison of hydrolyzable components with plant wax lipids and lignin phenols |
title_fullStr |
Multi-molecular tracers of terrestrial carbon transfer across the pan-Arctic : comparison of hydrolyzable components with plant wax lipids and lignin phenols |
title_full_unstemmed |
Multi-molecular tracers of terrestrial carbon transfer across the pan-Arctic : comparison of hydrolyzable components with plant wax lipids and lignin phenols |
title_sort |
multi-molecular tracers of terrestrial carbon transfer across the pan-arctic : comparison of hydrolyzable components with plant wax lipids and lignin phenols |
publisher |
Copernicus Publications on behalf of the European Geosciences Union |
publishDate |
2015 |
url |
https://hdl.handle.net/1912/7534 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Biogeosciences 12 (2015): 4841-4860 doi:10.5194/bg-12-4841-2015 |
op_relation |
https://doi.org/10.5194/bg-12-4841-2015 Biogeosciences 12 (2015): 4841-4860 https://hdl.handle.net/1912/7534 doi:10.5194/bg-12-4841-2015 |
op_rights |
Attribution 3.0 Unported http://creativecommons.org/licenses/by/3.0/ |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.5194/bg-12-4841-2015 |
container_title |
Biogeosciences |
container_volume |
12 |
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15 |
container_start_page |
4841 |
op_container_end_page |
4860 |
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1766324477678845952 |