Size and optical properties of dissolved organic matter in large boreal rivers during mixing: Implications for carbon transport and source discrimination
Study region: The lower Athabasca River (LAR), Northern Alberta, Canada Study focus: The functionality of dissolved organic matter (DOM) in natural waters largely depends upon its size and composition. Identifying the sources, associated properties and transport behavior of DOM is vital to understan...
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ftdoajarticles:oai:doaj.org/article:a075653da12f4b16b720ecdea12d9c42 2023-05-15T15:26:04+02:00 Size and optical properties of dissolved organic matter in large boreal rivers during mixing: Implications for carbon transport and source discrimination Jin-Ping Xue Chad W. Cuss Tommy Noernberg Muhammad B. Javed Na Chen Rick Pelletier Yu Wang William Shotyk 2022-04-01T00:00:00Z https://doi.org/10.1016/j.ejrh.2022.101033 https://doaj.org/article/a075653da12f4b16b720ecdea12d9c42 EN eng Elsevier http://www.sciencedirect.com/science/article/pii/S2214581822000465 https://doaj.org/toc/2214-5818 2214-5818 doi:10.1016/j.ejrh.2022.101033 https://doaj.org/article/a075653da12f4b16b720ecdea12d9c42 Journal of Hydrology: Regional Studies, Vol 40, Iss , Pp 101033- (2022) Dissolved organic matter River mixing Carbon transport Source discrimination Asymmetrical flow field-flow fractionation Optical properties Physical geography GB3-5030 Geology QE1-996.5 article 2022 ftdoajarticles https://doi.org/10.1016/j.ejrh.2022.101033 2022-12-31T03:38:09Z Study region: The lower Athabasca River (LAR), Northern Alberta, Canada Study focus: The functionality of dissolved organic matter (DOM) in natural waters largely depends upon its size and composition. Identifying the sources, associated properties and transport behavior of DOM is vital to understand its effects on downstream ecosystems. River mixing has great potential to alter DOM quality and transport, but the extent of these impacts is largely unknown in large boreal rivers. New hydrological insights for the region: Inputs of DOM from tributaries served as a major source and shifted DOM quantity and quality in the LAR towards higher concentrations of dissolved organic carbon (DOC), and greater degrees of humification and aromaticity. Seasonal variations in DOM quality were observed during spring freshet, including elevated molecular mass (i.e., size), and proportions of protein-like components (i.e., tryptophan-like). The conservative and delayed mixing of DOM was apparent at three large confluences, and contrasting mixing patterns for different tributaries suggested that these patterns were governed by both hydrological conditions and river geomorphology. Results suggest that DOM may be generally useful as a conservative tracer at large confluences in boreal rivers, thus highlighting its potential importance as a tracer for source discrimination in mixing zones. Article in Journal/Newspaper Athabasca River Directory of Open Access Journals: DOAJ Articles Athabasca River Canada Journal of Hydrology: Regional Studies 40 101033 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Dissolved organic matter River mixing Carbon transport Source discrimination Asymmetrical flow field-flow fractionation Optical properties Physical geography GB3-5030 Geology QE1-996.5 |
spellingShingle |
Dissolved organic matter River mixing Carbon transport Source discrimination Asymmetrical flow field-flow fractionation Optical properties Physical geography GB3-5030 Geology QE1-996.5 Jin-Ping Xue Chad W. Cuss Tommy Noernberg Muhammad B. Javed Na Chen Rick Pelletier Yu Wang William Shotyk Size and optical properties of dissolved organic matter in large boreal rivers during mixing: Implications for carbon transport and source discrimination |
topic_facet |
Dissolved organic matter River mixing Carbon transport Source discrimination Asymmetrical flow field-flow fractionation Optical properties Physical geography GB3-5030 Geology QE1-996.5 |
description |
Study region: The lower Athabasca River (LAR), Northern Alberta, Canada Study focus: The functionality of dissolved organic matter (DOM) in natural waters largely depends upon its size and composition. Identifying the sources, associated properties and transport behavior of DOM is vital to understand its effects on downstream ecosystems. River mixing has great potential to alter DOM quality and transport, but the extent of these impacts is largely unknown in large boreal rivers. New hydrological insights for the region: Inputs of DOM from tributaries served as a major source and shifted DOM quantity and quality in the LAR towards higher concentrations of dissolved organic carbon (DOC), and greater degrees of humification and aromaticity. Seasonal variations in DOM quality were observed during spring freshet, including elevated molecular mass (i.e., size), and proportions of protein-like components (i.e., tryptophan-like). The conservative and delayed mixing of DOM was apparent at three large confluences, and contrasting mixing patterns for different tributaries suggested that these patterns were governed by both hydrological conditions and river geomorphology. Results suggest that DOM may be generally useful as a conservative tracer at large confluences in boreal rivers, thus highlighting its potential importance as a tracer for source discrimination in mixing zones. |
format |
Article in Journal/Newspaper |
author |
Jin-Ping Xue Chad W. Cuss Tommy Noernberg Muhammad B. Javed Na Chen Rick Pelletier Yu Wang William Shotyk |
author_facet |
Jin-Ping Xue Chad W. Cuss Tommy Noernberg Muhammad B. Javed Na Chen Rick Pelletier Yu Wang William Shotyk |
author_sort |
Jin-Ping Xue |
title |
Size and optical properties of dissolved organic matter in large boreal rivers during mixing: Implications for carbon transport and source discrimination |
title_short |
Size and optical properties of dissolved organic matter in large boreal rivers during mixing: Implications for carbon transport and source discrimination |
title_full |
Size and optical properties of dissolved organic matter in large boreal rivers during mixing: Implications for carbon transport and source discrimination |
title_fullStr |
Size and optical properties of dissolved organic matter in large boreal rivers during mixing: Implications for carbon transport and source discrimination |
title_full_unstemmed |
Size and optical properties of dissolved organic matter in large boreal rivers during mixing: Implications for carbon transport and source discrimination |
title_sort |
size and optical properties of dissolved organic matter in large boreal rivers during mixing: implications for carbon transport and source discrimination |
publisher |
Elsevier |
publishDate |
2022 |
url |
https://doi.org/10.1016/j.ejrh.2022.101033 https://doaj.org/article/a075653da12f4b16b720ecdea12d9c42 |
geographic |
Athabasca River Canada |
geographic_facet |
Athabasca River Canada |
genre |
Athabasca River |
genre_facet |
Athabasca River |
op_source |
Journal of Hydrology: Regional Studies, Vol 40, Iss , Pp 101033- (2022) |
op_relation |
http://www.sciencedirect.com/science/article/pii/S2214581822000465 https://doaj.org/toc/2214-5818 2214-5818 doi:10.1016/j.ejrh.2022.101033 https://doaj.org/article/a075653da12f4b16b720ecdea12d9c42 |
op_doi |
https://doi.org/10.1016/j.ejrh.2022.101033 |
container_title |
Journal of Hydrology: Regional Studies |
container_volume |
40 |
container_start_page |
101033 |
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1766356635412856832 |