Seasonal cycling of zinc and cobalt in the Southeast Atlantic along the GEOTRACES GA10 section
We report the distributions and stoichiometry of dissolved zinc (dZn) and cobalt (dCo) in sub-tropical and sub-Antarctic waters of the south-eastern Atlantic Ocean during austral spring 2010 and summer 2011/2012. In sub-tropical surface waters, mixed-layer dZn and dCo concentrations during early spr...
Published in: | Biogeosciences |
---|---|
Main Authors: | , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
European Geosciences Union
2021
|
Subjects: | |
Online Access: | https://doi.org/10.5194/bg-18-4265-2021 https://ora.ox.ac.uk/objects/uuid:42c5ae89-8d65-4bcd-8040-2cc355403715 |
id |
ftuloxford:oai:ora.ox.ac.uk:uuid:42c5ae89-8d65-4bcd-8040-2cc355403715 |
---|---|
record_format |
openpolar |
spelling |
ftuloxford:oai:ora.ox.ac.uk:uuid:42c5ae89-8d65-4bcd-8040-2cc355403715 2024-10-06T13:42:40+00:00 Seasonal cycling of zinc and cobalt in the Southeast Atlantic along the GEOTRACES GA10 section Wyatt, NJ Milne, A Achterberg, EP Browning, T Bouman, H Woodward, EMS Lohan, MC 2021-06-14 https://doi.org/10.5194/bg-18-4265-2021 https://ora.ox.ac.uk/objects/uuid:42c5ae89-8d65-4bcd-8040-2cc355403715 eng eng European Geosciences Union doi:10.5194/bg-18-4265-2021 https://ora.ox.ac.uk/objects/uuid:42c5ae89-8d65-4bcd-8040-2cc355403715 https://doi.org/10.5194/bg-18-4265-2021 info:eu-repo/semantics/openAccess CC Attribution (CC BY) Journal article 2021 ftuloxford https://doi.org/10.5194/bg-18-4265-2021 2024-09-06T07:47:32Z We report the distributions and stoichiometry of dissolved zinc (dZn) and cobalt (dCo) in sub-tropical and sub-Antarctic waters of the south-eastern Atlantic Ocean during austral spring 2010 and summer 2011/2012. In sub-tropical surface waters, mixed-layer dZn and dCo concentrations during early spring were 1.60 ± 2.58 nM and 30 ± 11 pM, respectively, compared with summer values of 0.14 ± 0.08 nM and 24 ± 6 pM. The elevated spring dZn concentrations resulted from an apparent offshore transport of elevated dZn at depths between 20–55 m, derived from the Agulhas Bank. In contrast, open-ocean sub-Antarctic surface waters displayed largely consistent inter-seasonal mixed-layer dZn and dCo concentrations of 0.10 ± 0.07 nM and 11 ± 5 pM, respectively. Trace metal stoichiometry, calculated from concentration inventories, suggests a greater overall removal for dZn relative to dCo in the upper water column of the south-eastern Atlantic, with inter-seasonally decreasing dZn / dCo inventory ratios of 19–5 and 13–7 mol mol−1 for sub-tropical surface water and sub-Antarctic surface water, respectively. In this paper, we investigate how the seasonal influences of external input and phytoplankton succession may relate to the distribution of dZn and dCo and variation in dZn / dCo stoichiometry across these two distinct ecological regimes in the south-eastern Atlantic. Article in Journal/Newspaper Antarc* Antarctic ORA - Oxford University Research Archive Antarctic Austral Biogeosciences 18 14 4265 4280 |
institution |
Open Polar |
collection |
ORA - Oxford University Research Archive |
op_collection_id |
ftuloxford |
language |
English |
description |
We report the distributions and stoichiometry of dissolved zinc (dZn) and cobalt (dCo) in sub-tropical and sub-Antarctic waters of the south-eastern Atlantic Ocean during austral spring 2010 and summer 2011/2012. In sub-tropical surface waters, mixed-layer dZn and dCo concentrations during early spring were 1.60 ± 2.58 nM and 30 ± 11 pM, respectively, compared with summer values of 0.14 ± 0.08 nM and 24 ± 6 pM. The elevated spring dZn concentrations resulted from an apparent offshore transport of elevated dZn at depths between 20–55 m, derived from the Agulhas Bank. In contrast, open-ocean sub-Antarctic surface waters displayed largely consistent inter-seasonal mixed-layer dZn and dCo concentrations of 0.10 ± 0.07 nM and 11 ± 5 pM, respectively. Trace metal stoichiometry, calculated from concentration inventories, suggests a greater overall removal for dZn relative to dCo in the upper water column of the south-eastern Atlantic, with inter-seasonally decreasing dZn / dCo inventory ratios of 19–5 and 13–7 mol mol−1 for sub-tropical surface water and sub-Antarctic surface water, respectively. In this paper, we investigate how the seasonal influences of external input and phytoplankton succession may relate to the distribution of dZn and dCo and variation in dZn / dCo stoichiometry across these two distinct ecological regimes in the south-eastern Atlantic. |
format |
Article in Journal/Newspaper |
author |
Wyatt, NJ Milne, A Achterberg, EP Browning, T Bouman, H Woodward, EMS Lohan, MC |
spellingShingle |
Wyatt, NJ Milne, A Achterberg, EP Browning, T Bouman, H Woodward, EMS Lohan, MC Seasonal cycling of zinc and cobalt in the Southeast Atlantic along the GEOTRACES GA10 section |
author_facet |
Wyatt, NJ Milne, A Achterberg, EP Browning, T Bouman, H Woodward, EMS Lohan, MC |
author_sort |
Wyatt, NJ |
title |
Seasonal cycling of zinc and cobalt in the Southeast Atlantic along the GEOTRACES GA10 section |
title_short |
Seasonal cycling of zinc and cobalt in the Southeast Atlantic along the GEOTRACES GA10 section |
title_full |
Seasonal cycling of zinc and cobalt in the Southeast Atlantic along the GEOTRACES GA10 section |
title_fullStr |
Seasonal cycling of zinc and cobalt in the Southeast Atlantic along the GEOTRACES GA10 section |
title_full_unstemmed |
Seasonal cycling of zinc and cobalt in the Southeast Atlantic along the GEOTRACES GA10 section |
title_sort |
seasonal cycling of zinc and cobalt in the southeast atlantic along the geotraces ga10 section |
publisher |
European Geosciences Union |
publishDate |
2021 |
url |
https://doi.org/10.5194/bg-18-4265-2021 https://ora.ox.ac.uk/objects/uuid:42c5ae89-8d65-4bcd-8040-2cc355403715 |
geographic |
Antarctic Austral |
geographic_facet |
Antarctic Austral |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_relation |
doi:10.5194/bg-18-4265-2021 https://ora.ox.ac.uk/objects/uuid:42c5ae89-8d65-4bcd-8040-2cc355403715 https://doi.org/10.5194/bg-18-4265-2021 |
op_rights |
info:eu-repo/semantics/openAccess CC Attribution (CC BY) |
op_doi |
https://doi.org/10.5194/bg-18-4265-2021 |
container_title |
Biogeosciences |
container_volume |
18 |
container_issue |
14 |
container_start_page |
4265 |
op_container_end_page |
4280 |
_version_ |
1812176592256892928 |