Dissolved trace metals (Ni, Zn, Co, Cd, Pb, Al, and Mn) around the Crozet Islands, Southern Ocean
A phytoplankton bloom shown to be naturally iron (Fe) induced occurs north of the Crozet Islands (Southern Ocean) every year, providing an ideal opportunity to study dissolved trace metal distributions within an island system located in a high nutrient low chlorophyll (HNLC) region. We present water...
Published in: | Journal of Geophysical Research: Oceans |
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ftsouthampton:oai:eprints.soton.ac.uk:360798 2023-08-27T04:09:07+02:00 Dissolved trace metals (Ni, Zn, Co, Cd, Pb, Al, and Mn) around the Crozet Islands, Southern Ocean Castrillejo, Maxi Statham, Peter J. Fones, Gary R. Planquette, Hélène Idrus, Farah Roberts, Keiron 2013-10 https://eprints.soton.ac.uk/360798/ English eng Castrillejo, Maxi, Statham, Peter J., Fones, Gary R., Planquette, Hélène, Idrus, Farah and Roberts, Keiron (2013) Dissolved trace metals (Ni, Zn, Co, Cd, Pb, Al, and Mn) around the Crozet Islands, Southern Ocean. Journal of Geophysical Research: Oceans, 118 (10), 5188-5201. (doi:10.1002/jgrc.20359 <http://dx.doi.org/10.1002/jgrc.20359>). Article PeerReviewed 2013 ftsouthampton https://doi.org/10.1002/jgrc.20359 2023-08-03T22:20:25Z A phytoplankton bloom shown to be naturally iron (Fe) induced occurs north of the Crozet Islands (Southern Ocean) every year, providing an ideal opportunity to study dissolved trace metal distributions within an island system located in a high nutrient low chlorophyll (HNLC) region. We present water column profiles of dissolved nickel (Ni), zinc (Zn), cobalt (Co), cadmium (Cd), lead (Pb), aluminium (Al), and manganese (Mn) obtained as part of the NERC CROZEX program during austral summer (2004–2005). Two stations (M3 and M1) were sampled downstream (north) of Crozet in the bloom area and near the islands, along with a control station (M2) in the HNLC zone upstream (south) of the islands. The general range found was for Ni, 4.64–6.31 nM; Zn, 1.59–7.75 nM; Co, 24–49 pM; Cd, 135–673 pM; Pb, 6–22 pM; Al, 0.13–2.15 nM; and Mn, 0.07–0.64 nM. Vertical profiles indicate little island influence to the south with values in the range of other trace metal deprived regions of the Southern Ocean. Significant removal of Ni and Cd was observed in the bloom and Zn was moderately correlated with reactive silicate (Si) indicating diatom control over the internal cycling of this metal. Higher concentrations of Zn and Cd were observed near the islands. Pb, Al, and Mn distributions also suggest small but significant atmospheric dust supply particularly in the northern region. Article in Journal/Newspaper Crozet Islands Southern Ocean University of Southampton: e-Prints Soton Austral Southern Ocean Journal of Geophysical Research: Oceans 118 10 5188 5201 |
institution |
Open Polar |
collection |
University of Southampton: e-Prints Soton |
op_collection_id |
ftsouthampton |
language |
English |
description |
A phytoplankton bloom shown to be naturally iron (Fe) induced occurs north of the Crozet Islands (Southern Ocean) every year, providing an ideal opportunity to study dissolved trace metal distributions within an island system located in a high nutrient low chlorophyll (HNLC) region. We present water column profiles of dissolved nickel (Ni), zinc (Zn), cobalt (Co), cadmium (Cd), lead (Pb), aluminium (Al), and manganese (Mn) obtained as part of the NERC CROZEX program during austral summer (2004–2005). Two stations (M3 and M1) were sampled downstream (north) of Crozet in the bloom area and near the islands, along with a control station (M2) in the HNLC zone upstream (south) of the islands. The general range found was for Ni, 4.64–6.31 nM; Zn, 1.59–7.75 nM; Co, 24–49 pM; Cd, 135–673 pM; Pb, 6–22 pM; Al, 0.13–2.15 nM; and Mn, 0.07–0.64 nM. Vertical profiles indicate little island influence to the south with values in the range of other trace metal deprived regions of the Southern Ocean. Significant removal of Ni and Cd was observed in the bloom and Zn was moderately correlated with reactive silicate (Si) indicating diatom control over the internal cycling of this metal. Higher concentrations of Zn and Cd were observed near the islands. Pb, Al, and Mn distributions also suggest small but significant atmospheric dust supply particularly in the northern region. |
format |
Article in Journal/Newspaper |
author |
Castrillejo, Maxi Statham, Peter J. Fones, Gary R. Planquette, Hélène Idrus, Farah Roberts, Keiron |
spellingShingle |
Castrillejo, Maxi Statham, Peter J. Fones, Gary R. Planquette, Hélène Idrus, Farah Roberts, Keiron Dissolved trace metals (Ni, Zn, Co, Cd, Pb, Al, and Mn) around the Crozet Islands, Southern Ocean |
author_facet |
Castrillejo, Maxi Statham, Peter J. Fones, Gary R. Planquette, Hélène Idrus, Farah Roberts, Keiron |
author_sort |
Castrillejo, Maxi |
title |
Dissolved trace metals (Ni, Zn, Co, Cd, Pb, Al, and Mn) around the Crozet Islands, Southern Ocean |
title_short |
Dissolved trace metals (Ni, Zn, Co, Cd, Pb, Al, and Mn) around the Crozet Islands, Southern Ocean |
title_full |
Dissolved trace metals (Ni, Zn, Co, Cd, Pb, Al, and Mn) around the Crozet Islands, Southern Ocean |
title_fullStr |
Dissolved trace metals (Ni, Zn, Co, Cd, Pb, Al, and Mn) around the Crozet Islands, Southern Ocean |
title_full_unstemmed |
Dissolved trace metals (Ni, Zn, Co, Cd, Pb, Al, and Mn) around the Crozet Islands, Southern Ocean |
title_sort |
dissolved trace metals (ni, zn, co, cd, pb, al, and mn) around the crozet islands, southern ocean |
publishDate |
2013 |
url |
https://eprints.soton.ac.uk/360798/ |
geographic |
Austral Southern Ocean |
geographic_facet |
Austral Southern Ocean |
genre |
Crozet Islands Southern Ocean |
genre_facet |
Crozet Islands Southern Ocean |
op_relation |
Castrillejo, Maxi, Statham, Peter J., Fones, Gary R., Planquette, Hélène, Idrus, Farah and Roberts, Keiron (2013) Dissolved trace metals (Ni, Zn, Co, Cd, Pb, Al, and Mn) around the Crozet Islands, Southern Ocean. Journal of Geophysical Research: Oceans, 118 (10), 5188-5201. (doi:10.1002/jgrc.20359 <http://dx.doi.org/10.1002/jgrc.20359>). |
op_doi |
https://doi.org/10.1002/jgrc.20359 |
container_title |
Journal of Geophysical Research: Oceans |
container_volume |
118 |
container_issue |
10 |
container_start_page |
5188 |
op_container_end_page |
5201 |
_version_ |
1775350217627926528 |