Dissolved Trace Metals in the Ross Sea
The dissolved (D) trace metals zinc (Zn), cadmium (Cd), cobalt (Co), copper (Cu), iron (Fe), manganese (Mn), nickel (Ni), titanium (Ti), lanthanum (La), yttrium (Y), and lead (Pb) were analyzed via ICPMS in samples from the Ross Sea obtained during a cruise between 20 December 2013 and 5 January 201...
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ftdoajarticles:oai:doaj.org/article:16c497e309314d9ba552fb039466214d 2023-05-15T13:52:41+02:00 Dissolved Trace Metals in the Ross Sea Loes J. A. Gerringa Anne-Carlijn Alderkamp Gert van Dijken Patrick Laan Rob Middag Kevin R. Arrigo 2020-10-01T00:00:00Z https://doi.org/10.3389/fmars.2020.577098 https://doaj.org/article/16c497e309314d9ba552fb039466214d EN eng Frontiers Media S.A. https://www.frontiersin.org/articles/10.3389/fmars.2020.577098/full https://doaj.org/toc/2296-7745 2296-7745 doi:10.3389/fmars.2020.577098 https://doaj.org/article/16c497e309314d9ba552fb039466214d Frontiers in Marine Science, Vol 7 (2020) Antarctica dissolved trace metals Ross Sea Polynya bottom nepheloid layer sea ice melt Science Q General. Including nature conservation geographical distribution QH1-199.5 article 2020 ftdoajarticles https://doi.org/10.3389/fmars.2020.577098 2022-12-31T07:43:54Z The dissolved (D) trace metals zinc (Zn), cadmium (Cd), cobalt (Co), copper (Cu), iron (Fe), manganese (Mn), nickel (Ni), titanium (Ti), lanthanum (La), yttrium (Y), and lead (Pb) were analyzed via ICPMS in samples from the Ross Sea obtained during a cruise between 20 December 2013 and 5 January 2014. The concentrations of DZn, DCd, DCo, DCu, DFe, DMn, DNi, and DTi were significantly lower in the Antarctic surface Water (AASW) compared to the other deeper water masses, indicating biological uptake and possibly scavenging. In the AASW, DLa and DY were higher than in Winter Water (WW). This can be explained by a spring source from ice melt followed by loss during summer and autumn, probably due to passive adsorption. Dissolved Pb was low (16 pM) and no distinction between water masses was possible. Akin to the macro-nutrients nitrate and silicate, the modified Circumpolar Deep Water (mCDW) shows elevated DCd compared to the shelf water masses. Sea ice melt and ice sheet melt released DZn, DFe, DMn, DNi, DY, DLa, and probably DPb into the Ross Sea. However, only DFe, DMn, DY and DLa are transported into the Antarctic Circumpolar Current with the outflowing High Salinity Shelf Water (HSSW). The bottom nepheloid layer (BNL) released DFe, as well as DMn and DCu, into the HSSW whereas lateral transport from land formed a source of DMn and DFe. One station in the Ross Sea Polynya was resampled after two weeks, during which time the thickness of the BNL increased, with accompanying increases in DFe and DMn near the seafloor. In the surface layer nutrients (including micro-nutrients) were depleted further. The uptake slopes/stoichiometric ratios of DZn, DCd and DCo versus phosphate indicated that the distribution of these metals is related to uptake as well as the composition of the phytoplankton community. Estimated stoichiometric ratios of Zn and Cd relative to P were higher at a station dominated by Phaeocystis antarctica than at diatom-dominated stations, implying a higher utilization of these metals by P. antarctica. Article in Journal/Newspaper Antarc* Antarctic Antarctica Ice Sheet Ross Sea Sea ice Directory of Open Access Journals: DOAJ Articles Antarctic The Antarctic Ross Sea Dy ENVELOPE(11.369,11.369,64.834,64.834) Frontiers in Marine Science 7 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Antarctica dissolved trace metals Ross Sea Polynya bottom nepheloid layer sea ice melt Science Q General. Including nature conservation geographical distribution QH1-199.5 |
spellingShingle |
Antarctica dissolved trace metals Ross Sea Polynya bottom nepheloid layer sea ice melt Science Q General. Including nature conservation geographical distribution QH1-199.5 Loes J. A. Gerringa Anne-Carlijn Alderkamp Gert van Dijken Patrick Laan Rob Middag Kevin R. Arrigo Dissolved Trace Metals in the Ross Sea |
topic_facet |
Antarctica dissolved trace metals Ross Sea Polynya bottom nepheloid layer sea ice melt Science Q General. Including nature conservation geographical distribution QH1-199.5 |
description |
The dissolved (D) trace metals zinc (Zn), cadmium (Cd), cobalt (Co), copper (Cu), iron (Fe), manganese (Mn), nickel (Ni), titanium (Ti), lanthanum (La), yttrium (Y), and lead (Pb) were analyzed via ICPMS in samples from the Ross Sea obtained during a cruise between 20 December 2013 and 5 January 2014. The concentrations of DZn, DCd, DCo, DCu, DFe, DMn, DNi, and DTi were significantly lower in the Antarctic surface Water (AASW) compared to the other deeper water masses, indicating biological uptake and possibly scavenging. In the AASW, DLa and DY were higher than in Winter Water (WW). This can be explained by a spring source from ice melt followed by loss during summer and autumn, probably due to passive adsorption. Dissolved Pb was low (16 pM) and no distinction between water masses was possible. Akin to the macro-nutrients nitrate and silicate, the modified Circumpolar Deep Water (mCDW) shows elevated DCd compared to the shelf water masses. Sea ice melt and ice sheet melt released DZn, DFe, DMn, DNi, DY, DLa, and probably DPb into the Ross Sea. However, only DFe, DMn, DY and DLa are transported into the Antarctic Circumpolar Current with the outflowing High Salinity Shelf Water (HSSW). The bottom nepheloid layer (BNL) released DFe, as well as DMn and DCu, into the HSSW whereas lateral transport from land formed a source of DMn and DFe. One station in the Ross Sea Polynya was resampled after two weeks, during which time the thickness of the BNL increased, with accompanying increases in DFe and DMn near the seafloor. In the surface layer nutrients (including micro-nutrients) were depleted further. The uptake slopes/stoichiometric ratios of DZn, DCd and DCo versus phosphate indicated that the distribution of these metals is related to uptake as well as the composition of the phytoplankton community. Estimated stoichiometric ratios of Zn and Cd relative to P were higher at a station dominated by Phaeocystis antarctica than at diatom-dominated stations, implying a higher utilization of these metals by P. antarctica. |
format |
Article in Journal/Newspaper |
author |
Loes J. A. Gerringa Anne-Carlijn Alderkamp Gert van Dijken Patrick Laan Rob Middag Kevin R. Arrigo |
author_facet |
Loes J. A. Gerringa Anne-Carlijn Alderkamp Gert van Dijken Patrick Laan Rob Middag Kevin R. Arrigo |
author_sort |
Loes J. A. Gerringa |
title |
Dissolved Trace Metals in the Ross Sea |
title_short |
Dissolved Trace Metals in the Ross Sea |
title_full |
Dissolved Trace Metals in the Ross Sea |
title_fullStr |
Dissolved Trace Metals in the Ross Sea |
title_full_unstemmed |
Dissolved Trace Metals in the Ross Sea |
title_sort |
dissolved trace metals in the ross sea |
publisher |
Frontiers Media S.A. |
publishDate |
2020 |
url |
https://doi.org/10.3389/fmars.2020.577098 https://doaj.org/article/16c497e309314d9ba552fb039466214d |
long_lat |
ENVELOPE(11.369,11.369,64.834,64.834) |
geographic |
Antarctic The Antarctic Ross Sea Dy |
geographic_facet |
Antarctic The Antarctic Ross Sea Dy |
genre |
Antarc* Antarctic Antarctica Ice Sheet Ross Sea Sea ice |
genre_facet |
Antarc* Antarctic Antarctica Ice Sheet Ross Sea Sea ice |
op_source |
Frontiers in Marine Science, Vol 7 (2020) |
op_relation |
https://www.frontiersin.org/articles/10.3389/fmars.2020.577098/full https://doaj.org/toc/2296-7745 2296-7745 doi:10.3389/fmars.2020.577098 https://doaj.org/article/16c497e309314d9ba552fb039466214d |
op_doi |
https://doi.org/10.3389/fmars.2020.577098 |
container_title |
Frontiers in Marine Science |
container_volume |
7 |
_version_ |
1766257107047284736 |