Fingerprinting the elemental composition and chemodiversity of vegetation leachates: consequences for dissolved organic matter dynamics in Arctic environments
Dissolved organic matter is a key compartment for biogeochemical cycles in the Arctic and Subarctic terrestrial environments. With changing vegetation ecosystems, the chemical composition of organic matter is expected to shift and thus, the most labile part of it, namely the extractable fraction. To...
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2022
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Online Access: | http://hdl.handle.net/2078.1/260586 https://doi.org/10.1007/s10533-022-00925-9 |
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ftunivlouvain:oai:dial.uclouvain.be:boreal:260586 2024-05-12T07:59:11+00:00 Fingerprinting the elemental composition and chemodiversity of vegetation leachates: consequences for dissolved organic matter dynamics in Arctic environments Allain, Alienor Alexis, Marie A. Bridoux, Maxime C. Humbert, Guillaume Agnan, Yannick Rouelle, Maryse UCL - SST/ELI/ELIE - Environmental Sciences 2022 http://hdl.handle.net/2078.1/260586 https://doi.org/10.1007/s10533-022-00925-9 eng eng Springer Science and Business Media LLC boreal:260586 http://hdl.handle.net/2078.1/260586 doi:10.1007/s10533-022-00925-9 urn:ISSN:0168-2563 urn:EISSN:1573-515X info:eu-repo/semantics/openAccess Biogeochemistry, Vol. 1, no.1, p. 1 (2022) Water extractable organic matter Chemical characterization Multi-analyses approach Arctic ecosystem shift Organic matter dynamics info:eu-repo/semantics/article 2022 ftunivlouvain https://doi.org/10.1007/s10533-022-00925-9 2024-04-17T16:35:00Z Dissolved organic matter is a key compartment for biogeochemical cycles in the Arctic and Subarctic terrestrial environments. With changing vegetation ecosystems, the chemical composition of organic matter is expected to shift and thus, the most labile part of it, namely the extractable fraction. To this date, few studies have focused on the fingerprinting of DOM fraction from different primary sources, and even less on its potential repercussions on the environment. In this study, we jointly characterized the chemical composition of bulk and water-extractable organic matter (WEOM) from different vegetation species typical of Subarctic ecosystems. Through a multi-analyses approach, including elementary analysis, solid state 13C nuclear magnetic resonance, UV and 3D fluorescence spectroscopy, and high-resolution mass spectrometry, our results highlighted that the quantity and composition of produced WEOM significantly differed between vegetation sources and specifically between plant functional types (PFT, e.g., lichens, graminoids, and trees and shrubs). The relevance of optical indices was questioned, and the use of several of them was discarded for unprocessed WEOM study. However, the DOM proxies (optical indices, molecular composition, and stoichiometry) enabled to conclude that the lichen WEOM was likely less degradable than vascular plants WEOM, and among the latter group, graminoids produced more degradable WEOM than trees and shrubs. This work reported specific organic fingerprints for the different PFT. Consequently, the ongoing changes of vegetation in Arctic and Subarctic regions may greatly affect the composition of DOM that enters the soil and the hydrosystems, as well as the biogeochemical processes it is involved in. Article in Journal/Newspaper Arctic Subarctic DIAL@UCLouvain (Université catholique de Louvain) Arctic Biogeochemistry |
institution |
Open Polar |
collection |
DIAL@UCLouvain (Université catholique de Louvain) |
op_collection_id |
ftunivlouvain |
language |
English |
topic |
Water extractable organic matter Chemical characterization Multi-analyses approach Arctic ecosystem shift Organic matter dynamics |
spellingShingle |
Water extractable organic matter Chemical characterization Multi-analyses approach Arctic ecosystem shift Organic matter dynamics Allain, Alienor Alexis, Marie A. Bridoux, Maxime C. Humbert, Guillaume Agnan, Yannick Rouelle, Maryse Fingerprinting the elemental composition and chemodiversity of vegetation leachates: consequences for dissolved organic matter dynamics in Arctic environments |
topic_facet |
Water extractable organic matter Chemical characterization Multi-analyses approach Arctic ecosystem shift Organic matter dynamics |
description |
Dissolved organic matter is a key compartment for biogeochemical cycles in the Arctic and Subarctic terrestrial environments. With changing vegetation ecosystems, the chemical composition of organic matter is expected to shift and thus, the most labile part of it, namely the extractable fraction. To this date, few studies have focused on the fingerprinting of DOM fraction from different primary sources, and even less on its potential repercussions on the environment. In this study, we jointly characterized the chemical composition of bulk and water-extractable organic matter (WEOM) from different vegetation species typical of Subarctic ecosystems. Through a multi-analyses approach, including elementary analysis, solid state 13C nuclear magnetic resonance, UV and 3D fluorescence spectroscopy, and high-resolution mass spectrometry, our results highlighted that the quantity and composition of produced WEOM significantly differed between vegetation sources and specifically between plant functional types (PFT, e.g., lichens, graminoids, and trees and shrubs). The relevance of optical indices was questioned, and the use of several of them was discarded for unprocessed WEOM study. However, the DOM proxies (optical indices, molecular composition, and stoichiometry) enabled to conclude that the lichen WEOM was likely less degradable than vascular plants WEOM, and among the latter group, graminoids produced more degradable WEOM than trees and shrubs. This work reported specific organic fingerprints for the different PFT. Consequently, the ongoing changes of vegetation in Arctic and Subarctic regions may greatly affect the composition of DOM that enters the soil and the hydrosystems, as well as the biogeochemical processes it is involved in. |
author2 |
UCL - SST/ELI/ELIE - Environmental Sciences |
format |
Article in Journal/Newspaper |
author |
Allain, Alienor Alexis, Marie A. Bridoux, Maxime C. Humbert, Guillaume Agnan, Yannick Rouelle, Maryse |
author_facet |
Allain, Alienor Alexis, Marie A. Bridoux, Maxime C. Humbert, Guillaume Agnan, Yannick Rouelle, Maryse |
author_sort |
Allain, Alienor |
title |
Fingerprinting the elemental composition and chemodiversity of vegetation leachates: consequences for dissolved organic matter dynamics in Arctic environments |
title_short |
Fingerprinting the elemental composition and chemodiversity of vegetation leachates: consequences for dissolved organic matter dynamics in Arctic environments |
title_full |
Fingerprinting the elemental composition and chemodiversity of vegetation leachates: consequences for dissolved organic matter dynamics in Arctic environments |
title_fullStr |
Fingerprinting the elemental composition and chemodiversity of vegetation leachates: consequences for dissolved organic matter dynamics in Arctic environments |
title_full_unstemmed |
Fingerprinting the elemental composition and chemodiversity of vegetation leachates: consequences for dissolved organic matter dynamics in Arctic environments |
title_sort |
fingerprinting the elemental composition and chemodiversity of vegetation leachates: consequences for dissolved organic matter dynamics in arctic environments |
publisher |
Springer Science and Business Media LLC |
publishDate |
2022 |
url |
http://hdl.handle.net/2078.1/260586 https://doi.org/10.1007/s10533-022-00925-9 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Subarctic |
genre_facet |
Arctic Subarctic |
op_source |
Biogeochemistry, Vol. 1, no.1, p. 1 (2022) |
op_relation |
boreal:260586 http://hdl.handle.net/2078.1/260586 doi:10.1007/s10533-022-00925-9 urn:ISSN:0168-2563 urn:EISSN:1573-515X |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1007/s10533-022-00925-9 |
container_title |
Biogeochemistry |
_version_ |
1798840201074704384 |