The C_{32}$ alkane-1,15-diol as a tracer for riverine input in coastal seas
Abstract: Long chain alkyl diols are lipids that occur ubiquitously in marine sediments and are used as a proxy for sea surface temperature (SST), using the Long chain Diol Index (LDI), and for upwelling intensity/high nutrient conditions. The distribution of 1,13- and 1,15-diols has been documented...
Published in: | Geochimica et Cosmochimica Acta |
---|---|
Main Authors: | , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2017
|
Subjects: | |
Online Access: | https://hdl.handle.net/10067/1424090151162165141 https://repository.uantwerpen.be/docman/irua/70a5c2/142409_2018_12_28.pdf |
id |
ftunivantwerpen:c:irua:142409 |
---|---|
record_format |
openpolar |
spelling |
ftunivantwerpen:c:irua:142409 2024-09-30T14:37:57+00:00 The C_{32}$ alkane-1,15-diol as a tracer for riverine input in coastal seas Lattaud, Julie Kim, Jung-Hyun De Jonge, Cindy Zell, Claudia Damste, Jaap S. Sinninghe Schouten, Stefan 2017 pdf https://hdl.handle.net/10067/1424090151162165141 https://repository.uantwerpen.be/docman/irua/70a5c2/142409_2018_12_28.pdf eng eng info:eu-repo/semantics/altIdentifier/doi/10.1016/J.GCA.2016.12.030 info:eu-repo/semantics/altIdentifier/isi/000396794300008 info:eu-repo/semantics/openAccess 0016-7037 Geochimica et cosmochimica acta Physics Chemistry info:eu-repo/semantics/acceptedVersion info:eu-repo/semantics/article 2017 ftunivantwerpen https://doi.org/10.1016/J.GCA.2016.12.030 2024-09-10T04:06:38Z Abstract: Long chain alkyl diols are lipids that occur ubiquitously in marine sediments and are used as a proxy for sea surface temperature (SST), using the Long chain Diol Index (LDI), and for upwelling intensity/high nutrient conditions. The distribution of 1,13- and 1,15-diols has been documented in open marine and lacustrine sediments and suspended particulate matter, but rarely in coastal seas receiving a significant riverine, and thus continental organic matter, input. Here we studied the distribution of diols in four shelf seas with major river outflows: the Gulf of Lion, the Kara Sea, the Amazon shelf and the Berau delta, covering a wide range of climate conditions. The relative abundance of the C-32 1,15-diol is consistently higher close to the river mouth and particularly in the suspended particulate matter of the rivers suggesting a terrigenous source. This is supported by statistical analysis which points out a significant positive correlation between the C-32 1,15-diol and the Branched and Isoprenoid Tetraether index, a proxy reflecting soil and riverine input in marine environments. However, the C-32 1,15-diol was not detected in soils and is unlikely to be derived from vegetation, suggesting that the C-32 1,15-diol is mainly produced in rivers. This agrees with the observation that it is a dominant diol in most cultivated freshwater eustigmatophyte algae. We, therefore, suggest that the relative abundance of the C-32 1,15-diol can potentially be used as a proxy for riverine organic matter input in shelf seas. Our results also show that long chain alkyl diols delivered by rivers can substantially affect LDI-reconstructed SSTs in coastal regions close to river mouths. (C) 2016 Elsevier Ltd. All rights reserved. Article in Journal/Newspaper Kara Sea IRUA - Institutional Repository van de Universiteit Antwerpen Kara Sea Geochimica et Cosmochimica Acta 202 146 158 |
institution |
Open Polar |
collection |
IRUA - Institutional Repository van de Universiteit Antwerpen |
op_collection_id |
ftunivantwerpen |
language |
English |
topic |
Physics Chemistry |
spellingShingle |
Physics Chemistry Lattaud, Julie Kim, Jung-Hyun De Jonge, Cindy Zell, Claudia Damste, Jaap S. Sinninghe Schouten, Stefan The C_{32}$ alkane-1,15-diol as a tracer for riverine input in coastal seas |
topic_facet |
Physics Chemistry |
description |
Abstract: Long chain alkyl diols are lipids that occur ubiquitously in marine sediments and are used as a proxy for sea surface temperature (SST), using the Long chain Diol Index (LDI), and for upwelling intensity/high nutrient conditions. The distribution of 1,13- and 1,15-diols has been documented in open marine and lacustrine sediments and suspended particulate matter, but rarely in coastal seas receiving a significant riverine, and thus continental organic matter, input. Here we studied the distribution of diols in four shelf seas with major river outflows: the Gulf of Lion, the Kara Sea, the Amazon shelf and the Berau delta, covering a wide range of climate conditions. The relative abundance of the C-32 1,15-diol is consistently higher close to the river mouth and particularly in the suspended particulate matter of the rivers suggesting a terrigenous source. This is supported by statistical analysis which points out a significant positive correlation between the C-32 1,15-diol and the Branched and Isoprenoid Tetraether index, a proxy reflecting soil and riverine input in marine environments. However, the C-32 1,15-diol was not detected in soils and is unlikely to be derived from vegetation, suggesting that the C-32 1,15-diol is mainly produced in rivers. This agrees with the observation that it is a dominant diol in most cultivated freshwater eustigmatophyte algae. We, therefore, suggest that the relative abundance of the C-32 1,15-diol can potentially be used as a proxy for riverine organic matter input in shelf seas. Our results also show that long chain alkyl diols delivered by rivers can substantially affect LDI-reconstructed SSTs in coastal regions close to river mouths. (C) 2016 Elsevier Ltd. All rights reserved. |
format |
Article in Journal/Newspaper |
author |
Lattaud, Julie Kim, Jung-Hyun De Jonge, Cindy Zell, Claudia Damste, Jaap S. Sinninghe Schouten, Stefan |
author_facet |
Lattaud, Julie Kim, Jung-Hyun De Jonge, Cindy Zell, Claudia Damste, Jaap S. Sinninghe Schouten, Stefan |
author_sort |
Lattaud, Julie |
title |
The C_{32}$ alkane-1,15-diol as a tracer for riverine input in coastal seas |
title_short |
The C_{32}$ alkane-1,15-diol as a tracer for riverine input in coastal seas |
title_full |
The C_{32}$ alkane-1,15-diol as a tracer for riverine input in coastal seas |
title_fullStr |
The C_{32}$ alkane-1,15-diol as a tracer for riverine input in coastal seas |
title_full_unstemmed |
The C_{32}$ alkane-1,15-diol as a tracer for riverine input in coastal seas |
title_sort |
c_{32}$ alkane-1,15-diol as a tracer for riverine input in coastal seas |
publishDate |
2017 |
url |
https://hdl.handle.net/10067/1424090151162165141 https://repository.uantwerpen.be/docman/irua/70a5c2/142409_2018_12_28.pdf |
geographic |
Kara Sea |
geographic_facet |
Kara Sea |
genre |
Kara Sea |
genre_facet |
Kara Sea |
op_source |
0016-7037 Geochimica et cosmochimica acta |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/J.GCA.2016.12.030 info:eu-repo/semantics/altIdentifier/isi/000396794300008 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1016/J.GCA.2016.12.030 |
container_title |
Geochimica et Cosmochimica Acta |
container_volume |
202 |
container_start_page |
146 |
op_container_end_page |
158 |
_version_ |
1811640725108948992 |