Vertical Flux of Trace Elements Associated With Lithogenic and Biogenic Carrier Phases in the Southern Ocean
International audience Trace elements (TE) are tracers of multiple biotic and abiotic processes in the ocean and some of them are essential for marine life. Vertical export by particles is a major removal process of a large fraction of TE from the surface ocean. However, the seasonal export dynamics...
Published in: | Global Biogeochemical Cycles |
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Online Access: | https://hal-insu.archives-ouvertes.fr/insu-03690232 https://doi.org/10.1029/2022GB007371 |
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ftunivnantes:oai:HAL:insu-03690232v1 2023-05-15T18:24:44+02:00 Vertical Flux of Trace Elements Associated With Lithogenic and Biogenic Carrier Phases in the Southern Ocean Blain, S. Planquette, H. Obernosterer, I. Guéneuguès, A. Laboratoire d'Océanographie Microbienne (LOMIC) Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Observatoire océanologique de Banyuls (OOB) Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) Laboratoire des Sciences de l'Environnement Marin (LEMAR) (LEMAR) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Institut Universitaire Européen de la Mer (IUEM) Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) 2022 https://hal-insu.archives-ouvertes.fr/insu-03690232 https://doi.org/10.1029/2022GB007371 en eng HAL CCSD info:eu-repo/semantics/altIdentifier/doi/10.1029/2022GB007371 insu-03690232 https://hal-insu.archives-ouvertes.fr/insu-03690232 BIBCODE: 2022GBioC.3607371B doi:10.1029/2022GB007371 GLOBAL BIOGEOCHEMICAL CYCLES https://hal-insu.archives-ouvertes.fr/insu-03690232 GLOBAL BIOGEOCHEMICAL CYCLES, 2022, 36, ⟨10.1029/2022GB007371⟩ trace element export trace metal southern ocean diatoms faecal pellets [SDU]Sciences of the Universe [physics] info:eu-repo/semantics/article Journal articles 2022 ftunivnantes https://doi.org/10.1029/2022GB007371 2022-06-12T05:50:39Z International audience Trace elements (TE) are tracers of multiple biotic and abiotic processes in the ocean and some of them are essential for marine life. Vertical export by particles is a major removal process of a large fraction of TE from the surface ocean. However, the seasonal export dynamics and its controlling factors, critical for the understanding of the internal TE cycling, remain poorly constrained. Here, we report and discuss the seasonal export of 15 TE in sinking particles collected by a sediment trap deployed in a highly productive region of the Southern Ocean. Basalt material was the main carrier phase for the export flux of 9 TE, and its dynamic was characterized by a strong decrease over time. TE export driven by biological carriers such as diatom spores and vegetative cells added pulsed seasonal dynamics to the lithogenic signal, while the contribution of fecal pellets was less variable over the season. For each TE, we were able to decipher the biological carrier phases that represent the most dominant export pathway. We discuss this partitioning with regards to the known metabolic functions of the different trace metals or TE of biological interest. Article in Journal/Newspaper Southern Ocean Université de Nantes: HAL-UNIV-NANTES Southern Ocean Global Biogeochemical Cycles 36 5 |
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Open Polar |
collection |
Université de Nantes: HAL-UNIV-NANTES |
op_collection_id |
ftunivnantes |
language |
English |
topic |
trace element export trace metal southern ocean diatoms faecal pellets [SDU]Sciences of the Universe [physics] |
spellingShingle |
trace element export trace metal southern ocean diatoms faecal pellets [SDU]Sciences of the Universe [physics] Blain, S. Planquette, H. Obernosterer, I. Guéneuguès, A. Vertical Flux of Trace Elements Associated With Lithogenic and Biogenic Carrier Phases in the Southern Ocean |
topic_facet |
trace element export trace metal southern ocean diatoms faecal pellets [SDU]Sciences of the Universe [physics] |
description |
International audience Trace elements (TE) are tracers of multiple biotic and abiotic processes in the ocean and some of them are essential for marine life. Vertical export by particles is a major removal process of a large fraction of TE from the surface ocean. However, the seasonal export dynamics and its controlling factors, critical for the understanding of the internal TE cycling, remain poorly constrained. Here, we report and discuss the seasonal export of 15 TE in sinking particles collected by a sediment trap deployed in a highly productive region of the Southern Ocean. Basalt material was the main carrier phase for the export flux of 9 TE, and its dynamic was characterized by a strong decrease over time. TE export driven by biological carriers such as diatom spores and vegetative cells added pulsed seasonal dynamics to the lithogenic signal, while the contribution of fecal pellets was less variable over the season. For each TE, we were able to decipher the biological carrier phases that represent the most dominant export pathway. We discuss this partitioning with regards to the known metabolic functions of the different trace metals or TE of biological interest. |
author2 |
Laboratoire d'Océanographie Microbienne (LOMIC) Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Observatoire océanologique de Banyuls (OOB) Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) Laboratoire des Sciences de l'Environnement Marin (LEMAR) (LEMAR) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Institut Universitaire Européen de la Mer (IUEM) Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Blain, S. Planquette, H. Obernosterer, I. Guéneuguès, A. |
author_facet |
Blain, S. Planquette, H. Obernosterer, I. Guéneuguès, A. |
author_sort |
Blain, S. |
title |
Vertical Flux of Trace Elements Associated With Lithogenic and Biogenic Carrier Phases in the Southern Ocean |
title_short |
Vertical Flux of Trace Elements Associated With Lithogenic and Biogenic Carrier Phases in the Southern Ocean |
title_full |
Vertical Flux of Trace Elements Associated With Lithogenic and Biogenic Carrier Phases in the Southern Ocean |
title_fullStr |
Vertical Flux of Trace Elements Associated With Lithogenic and Biogenic Carrier Phases in the Southern Ocean |
title_full_unstemmed |
Vertical Flux of Trace Elements Associated With Lithogenic and Biogenic Carrier Phases in the Southern Ocean |
title_sort |
vertical flux of trace elements associated with lithogenic and biogenic carrier phases in the southern ocean |
publisher |
HAL CCSD |
publishDate |
2022 |
url |
https://hal-insu.archives-ouvertes.fr/insu-03690232 https://doi.org/10.1029/2022GB007371 |
geographic |
Southern Ocean |
geographic_facet |
Southern Ocean |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_source |
GLOBAL BIOGEOCHEMICAL CYCLES https://hal-insu.archives-ouvertes.fr/insu-03690232 GLOBAL BIOGEOCHEMICAL CYCLES, 2022, 36, ⟨10.1029/2022GB007371⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/2022GB007371 insu-03690232 https://hal-insu.archives-ouvertes.fr/insu-03690232 BIBCODE: 2022GBioC.3607371B doi:10.1029/2022GB007371 |
op_doi |
https://doi.org/10.1029/2022GB007371 |
container_title |
Global Biogeochemical Cycles |
container_volume |
36 |
container_issue |
5 |
_version_ |
1766205605280743424 |