Iron in sea ice: Review & 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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ftunivbruxelles:oai:dipot.ulb.ac.be:2013/247732 2023-05-15T13:58:15+02:00 Iron in sea ice: Review & new insights Lannuzel, Delphine Vancoppenolle, Martin Van der Merwe, Pier De Jong, Jeroen Meiners, Klaus Martin Grotti, Marco Nishioka, Jun Schoemann, Véronique 2016-10 1 full-text file(s): application/pdf http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/247732 https://dipot.ulb.ac.be/dspace/bitstream/2013/247732/3/doi_231359.pdf en eng uri/info:doi/10.12952/journal.elementa.000130 uri/info:scp/85012236975 https://dipot.ulb.ac.be/dspace/bitstream/2013/247732/3/doi_231359.pdf http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/247732 1 full-text file(s): info:eu-repo/semantics/openAccess Elementa (Washington, D.C.), 4 Généralités info:eu-repo/semantics/article info:ulb-repo/semantics/articlePeerReview info:ulb-repo/semantics/openurl/article 2016 ftunivbruxelles 2022-06-12T21:51:47Z 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. SCOPUS: re.j info:eu-repo/semantics/published Article in Journal/Newspaper Antarc* Antarctic Arctic Sea ice Southern Ocean ice covered waters DI-fusion : dépôt institutionnel de l'Université libre de Bruxelles (ULB) Arctic Antarctic Southern Ocean |
institution |
Open Polar |
collection |
DI-fusion : dépôt institutionnel de l'Université libre de Bruxelles (ULB) |
op_collection_id |
ftunivbruxelles |
language |
English |
topic |
Généralités |
spellingShingle |
Généralités Lannuzel, Delphine Vancoppenolle, Martin Van der Merwe, Pier De Jong, Jeroen Meiners, Klaus Martin Grotti, Marco Nishioka, Jun Schoemann, Véronique Iron in sea ice: Review & new insights |
topic_facet |
Généralités |
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. SCOPUS: re.j info:eu-repo/semantics/published |
format |
Article in Journal/Newspaper |
author |
Lannuzel, Delphine Vancoppenolle, Martin Van der Merwe, Pier De Jong, Jeroen Meiners, Klaus Martin Grotti, Marco Nishioka, Jun Schoemann, Véronique |
author_facet |
Lannuzel, Delphine Vancoppenolle, Martin Van der Merwe, Pier De Jong, Jeroen Meiners, Klaus Martin Grotti, Marco Nishioka, Jun Schoemann, Véronique |
author_sort |
Lannuzel, Delphine |
title |
Iron in sea ice: Review & new insights |
title_short |
Iron in sea ice: Review & new insights |
title_full |
Iron in sea ice: Review & new insights |
title_fullStr |
Iron in sea ice: Review & new insights |
title_full_unstemmed |
Iron in sea ice: Review & new insights |
title_sort |
iron in sea ice: review & new insights |
publishDate |
2016 |
url |
http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/247732 https://dipot.ulb.ac.be/dspace/bitstream/2013/247732/3/doi_231359.pdf |
geographic |
Arctic Antarctic Southern Ocean |
geographic_facet |
Arctic Antarctic 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_source |
Elementa (Washington, D.C.), 4 |
op_relation |
uri/info:doi/10.12952/journal.elementa.000130 uri/info:scp/85012236975 https://dipot.ulb.ac.be/dspace/bitstream/2013/247732/3/doi_231359.pdf http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/247732 |
op_rights |
1 full-text file(s): info:eu-repo/semantics/openAccess |
_version_ |
1766266442110468096 |