Iron in sea ice: review and new insights
The discovery that melting sea ice can fertilize iron (Fe)-depleted polar waters has recently fostered trace metal research efforts in sea ice. The aim of this review is to summarize and synthesize the current understanding of Fe biogeochemistry in sea ice. To do so, we compiled available data on pa...
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ftunivtasecite:oai:ecite.utas.edu.au:115513 2023-05-15T13:49:03+02:00 Iron in sea ice: review and new insights Lannuzel, D Vancoppenolle, M van der Merwe, P de Jong, J Meiners, KM Grotti, M Nishioka, J Schoemann, V 2016 application/pdf https://doi.org/10.12952/journal.elementa.000130 http://ecite.utas.edu.au/115513 en eng BioOne http://ecite.utas.edu.au/115513/1/lannuzel et al 2016.pdf http://dx.doi.org/10.12952/journal.elementa.000130 Lannuzel, D and Vancoppenolle, M and van der Merwe, P and de Jong, J and Meiners, KM and Grotti, M and Nishioka, J and Schoemann, V, Iron in sea ice: review and new insights, Elementa, 4 Article 130. ISSN 2325-1026 (2016) [Refereed Article] http://ecite.utas.edu.au/115513 Earth Sciences Oceanography Chemical Oceanography Refereed Article PeerReviewed 2016 ftunivtasecite https://doi.org/10.12952/journal.elementa.000130 2019-12-13T22:15:14Z The discovery that melting sea ice can fertilize iron (Fe)-depleted polar waters has recently fostered trace metal research efforts in sea ice. The aim of this review is to summarize and synthesize the current understanding of Fe biogeochemistry in sea ice. To do so, we compiled available data on particulate, dissolved, and total dissolvable Fe (PFe, DFe and TDFe, respectively) from sea-ice studies from both polar regions and from sub-Arctic and northern Hemisphere temperate areas. Data analysis focused on a circum-Antarctic Fe dataset derived from 61 ice cores collected during 10 field expeditions carried out between 1997 and 2012 in the Southern Ocean. Our key findings are that 1) concentrations of all forms of Fe (PFe, DFe, TDFe) are at least a magnitude larger in fast ice and pack ice than in typical Antarctic surface waters; 2) DFe, PFe and TDFe behave differently when plotted against sea-ice salinity, suggesting that their distributions in sea ice are driven by distinct, spatially and temporally decoupled processes; 3) DFe is actively extracted from seawater into growing sea ice; 4) fast ice generally has more Fe-bearing particles, a finding supported by the significant negative correlation observed between both PFe and TDFe concentrations in sea ice and water depth; 5) the Fe pool in sea ice is coupled to biota, as indicated by the positive correlations of PFe and TDFe with chlorophyll a and particulate organic carbon; and 6) the vast majority of DFe appears to be adsorbed onto something in sea ice. This review also addresses the role of sea ice as a reservoir of Fe and its role in seeding seasonally ice-covered waters. We discuss the pivotal role of organic ligands in controlling DFe concentrations in sea ice and highlight the uncertainties that remain regarding the mechanisms of Fe incorporation in sea ice. Article in Journal/Newspaper Antarc* Antarctic Arctic Sea ice Southern Ocean ice covered waters eCite UTAS (University of Tasmania) Antarctic Arctic Southern Ocean Elementa: Science of the Anthropocene 4 |
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Open Polar |
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eCite UTAS (University of Tasmania) |
op_collection_id |
ftunivtasecite |
language |
English |
topic |
Earth Sciences Oceanography Chemical Oceanography |
spellingShingle |
Earth Sciences Oceanography Chemical Oceanography Lannuzel, D Vancoppenolle, M van der Merwe, P de Jong, J Meiners, KM Grotti, M Nishioka, J Schoemann, V Iron in sea ice: review and new insights |
topic_facet |
Earth Sciences Oceanography Chemical Oceanography |
description |
The discovery that melting sea ice can fertilize iron (Fe)-depleted polar waters has recently fostered trace metal research efforts in sea ice. The aim of this review is to summarize and synthesize the current understanding of Fe biogeochemistry in sea ice. To do so, we compiled available data on particulate, dissolved, and total dissolvable Fe (PFe, DFe and TDFe, respectively) from sea-ice studies from both polar regions and from sub-Arctic and northern Hemisphere temperate areas. Data analysis focused on a circum-Antarctic Fe dataset derived from 61 ice cores collected during 10 field expeditions carried out between 1997 and 2012 in the Southern Ocean. Our key findings are that 1) concentrations of all forms of Fe (PFe, DFe, TDFe) are at least a magnitude larger in fast ice and pack ice than in typical Antarctic surface waters; 2) DFe, PFe and TDFe behave differently when plotted against sea-ice salinity, suggesting that their distributions in sea ice are driven by distinct, spatially and temporally decoupled processes; 3) DFe is actively extracted from seawater into growing sea ice; 4) fast ice generally has more Fe-bearing particles, a finding supported by the significant negative correlation observed between both PFe and TDFe concentrations in sea ice and water depth; 5) the Fe pool in sea ice is coupled to biota, as indicated by the positive correlations of PFe and TDFe with chlorophyll a and particulate organic carbon; and 6) the vast majority of DFe appears to be adsorbed onto something in sea ice. This review also addresses the role of sea ice as a reservoir of Fe and its role in seeding seasonally ice-covered waters. We discuss the pivotal role of organic ligands in controlling DFe concentrations in sea ice and highlight the uncertainties that remain regarding the mechanisms of Fe incorporation in sea ice. |
format |
Article in Journal/Newspaper |
author |
Lannuzel, D Vancoppenolle, M van der Merwe, P de Jong, J Meiners, KM Grotti, M Nishioka, J Schoemann, V |
author_facet |
Lannuzel, D Vancoppenolle, M van der Merwe, P de Jong, J Meiners, KM Grotti, M Nishioka, J Schoemann, V |
author_sort |
Lannuzel, D |
title |
Iron in sea ice: review and new insights |
title_short |
Iron in sea ice: review and new insights |
title_full |
Iron in sea ice: review and new insights |
title_fullStr |
Iron in sea ice: review and new insights |
title_full_unstemmed |
Iron in sea ice: review and new insights |
title_sort |
iron in sea ice: review and new insights |
publisher |
BioOne |
publishDate |
2016 |
url |
https://doi.org/10.12952/journal.elementa.000130 http://ecite.utas.edu.au/115513 |
geographic |
Antarctic Arctic Southern Ocean |
geographic_facet |
Antarctic Arctic Southern Ocean |
genre |
Antarc* Antarctic Arctic Sea ice Southern Ocean ice covered waters |
genre_facet |
Antarc* Antarctic Arctic Sea ice Southern Ocean ice covered waters |
op_relation |
http://ecite.utas.edu.au/115513/1/lannuzel et al 2016.pdf http://dx.doi.org/10.12952/journal.elementa.000130 Lannuzel, D and Vancoppenolle, M and van der Merwe, P and de Jong, J and Meiners, KM and Grotti, M and Nishioka, J and Schoemann, V, Iron in sea ice: review and new insights, Elementa, 4 Article 130. ISSN 2325-1026 (2016) [Refereed Article] http://ecite.utas.edu.au/115513 |
op_doi |
https://doi.org/10.12952/journal.elementa.000130 |
container_title |
Elementa: Science of the Anthropocene |
container_volume |
4 |
_version_ |
1766250698160209920 |