Nutrient distribution in East Antarctic summer sea ice: a potential iron contribution from glacial basal melt
Antarctic sea ice can incorporate high levels of iron (Fe) during its formation and has been suggested as an important source of this essential micronutrient to Southern Ocean surface waters during the melt season. Over the last decade, a limited number of studies have quantified the Fe pool in Anta...
Published in: | Journal of Geophysical Research: Oceans |
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ftunivtasmania:oai:eprints.utas.edu.au:36009 2023-05-15T13:42:39+02:00 Nutrient distribution in East Antarctic summer sea ice: a potential iron contribution from glacial basal melt Duprat, LPADM Corkill, M Genovese, C Townsend, AT Moreau, S Meiners, KM Lannuzel, D 2020 application/pdf https://eprints.utas.edu.au/36009/ https://eprints.utas.edu.au/36009/1/142657%20-%20Nutrient%20distribution%20in%20East%20Antarctic%20summer%20sea%20ice.pdf en eng Wiley-Blackwell Publishing Inc. https://eprints.utas.edu.au/36009/1/142657%20-%20Nutrient%20distribution%20in%20East%20Antarctic%20summer%20sea%20ice.pdf Duprat, LPADM orcid:0000-0003-1536-9559 , Corkill, M, Genovese, C orcid:0000-0002-9015-020X , Townsend, AT orcid:0000-0002-2972-2678 , Moreau, S, Meiners, KM and Lannuzel, D orcid:0000-0001-6154-1837 2020 , 'Nutrient distribution in East Antarctic summer sea ice: a potential iron contribution from glacial basal melt' , JGR Oceans, vol. 125, no. 12 , pp. 1-19 , doi:10.1029/2020JC016130 <http://dx.doi.org/10.1029/2020JC016130>. sea ice iron biogeochemistry Antarctica Article PeerReviewed 2020 ftunivtasmania https://doi.org/10.1029/2020JC016130 2021-12-06T23:17:53Z Antarctic sea ice can incorporate high levels of iron (Fe) during its formation and has been suggested as an important source of this essential micronutrient to Southern Ocean surface waters during the melt season. Over the last decade, a limited number of studies have quantified the Fe pool in Antarctic sea ice, with a focus on late winter and spring. Here we study the distribution of operationally defined dissolved and particulate Fe from nine sites sampled between Wilkes Land and King George V Land during austral summer 2016/2017. Results point toward a net heterotrophic sea‐ice community, consistent with the observed nitrate limitation (−1) which can serve as a hotspot for bacterial activity. Finally, results indicate a potential relationship between glacial meltwater discharged from the Moscow University Ice Shelf and the occurrence of Fe‐rich (∼4.3 μM) platelet ice in its vicinity. As climate change is expected to result in enhanced Fe‐rich glacial discharge and changes in summer sea‐ice extent and quality, the processes influencing Fe distribution in sea ice that persists into summer need to be better constrained. Article in Journal/Newspaper Antarc* Antarctic Antarctica George V Land Ice Shelf Moscow University Ice Shelf Sea ice Southern Ocean Wilkes Land University of Tasmania: UTas ePrints Antarctic Austral George V Land ENVELOPE(148.000,148.000,-68.500,-68.500) Moscow University Ice Shelf ENVELOPE(121.000,121.000,-67.000,-67.000) Southern Ocean Wilkes Land ENVELOPE(120.000,120.000,-69.000,-69.000) Journal of Geophysical Research: Oceans 125 12 |
institution |
Open Polar |
collection |
University of Tasmania: UTas ePrints |
op_collection_id |
ftunivtasmania |
language |
English |
topic |
sea ice iron biogeochemistry Antarctica |
spellingShingle |
sea ice iron biogeochemistry Antarctica Duprat, LPADM Corkill, M Genovese, C Townsend, AT Moreau, S Meiners, KM Lannuzel, D Nutrient distribution in East Antarctic summer sea ice: a potential iron contribution from glacial basal melt |
topic_facet |
sea ice iron biogeochemistry Antarctica |
description |
Antarctic sea ice can incorporate high levels of iron (Fe) during its formation and has been suggested as an important source of this essential micronutrient to Southern Ocean surface waters during the melt season. Over the last decade, a limited number of studies have quantified the Fe pool in Antarctic sea ice, with a focus on late winter and spring. Here we study the distribution of operationally defined dissolved and particulate Fe from nine sites sampled between Wilkes Land and King George V Land during austral summer 2016/2017. Results point toward a net heterotrophic sea‐ice community, consistent with the observed nitrate limitation (−1) which can serve as a hotspot for bacterial activity. Finally, results indicate a potential relationship between glacial meltwater discharged from the Moscow University Ice Shelf and the occurrence of Fe‐rich (∼4.3 μM) platelet ice in its vicinity. As climate change is expected to result in enhanced Fe‐rich glacial discharge and changes in summer sea‐ice extent and quality, the processes influencing Fe distribution in sea ice that persists into summer need to be better constrained. |
format |
Article in Journal/Newspaper |
author |
Duprat, LPADM Corkill, M Genovese, C Townsend, AT Moreau, S Meiners, KM Lannuzel, D |
author_facet |
Duprat, LPADM Corkill, M Genovese, C Townsend, AT Moreau, S Meiners, KM Lannuzel, D |
author_sort |
Duprat, LPADM |
title |
Nutrient distribution in East Antarctic summer sea ice: a potential iron contribution from glacial basal melt |
title_short |
Nutrient distribution in East Antarctic summer sea ice: a potential iron contribution from glacial basal melt |
title_full |
Nutrient distribution in East Antarctic summer sea ice: a potential iron contribution from glacial basal melt |
title_fullStr |
Nutrient distribution in East Antarctic summer sea ice: a potential iron contribution from glacial basal melt |
title_full_unstemmed |
Nutrient distribution in East Antarctic summer sea ice: a potential iron contribution from glacial basal melt |
title_sort |
nutrient distribution in east antarctic summer sea ice: a potential iron contribution from glacial basal melt |
publisher |
Wiley-Blackwell Publishing Inc. |
publishDate |
2020 |
url |
https://eprints.utas.edu.au/36009/ https://eprints.utas.edu.au/36009/1/142657%20-%20Nutrient%20distribution%20in%20East%20Antarctic%20summer%20sea%20ice.pdf |
long_lat |
ENVELOPE(148.000,148.000,-68.500,-68.500) ENVELOPE(121.000,121.000,-67.000,-67.000) ENVELOPE(120.000,120.000,-69.000,-69.000) |
geographic |
Antarctic Austral George V Land Moscow University Ice Shelf Southern Ocean Wilkes Land |
geographic_facet |
Antarctic Austral George V Land Moscow University Ice Shelf Southern Ocean Wilkes Land |
genre |
Antarc* Antarctic Antarctica George V Land Ice Shelf Moscow University Ice Shelf Sea ice Southern Ocean Wilkes Land |
genre_facet |
Antarc* Antarctic Antarctica George V Land Ice Shelf Moscow University Ice Shelf Sea ice Southern Ocean Wilkes Land |
op_relation |
https://eprints.utas.edu.au/36009/1/142657%20-%20Nutrient%20distribution%20in%20East%20Antarctic%20summer%20sea%20ice.pdf Duprat, LPADM orcid:0000-0003-1536-9559 , Corkill, M, Genovese, C orcid:0000-0002-9015-020X , Townsend, AT orcid:0000-0002-2972-2678 , Moreau, S, Meiners, KM and Lannuzel, D orcid:0000-0001-6154-1837 2020 , 'Nutrient distribution in East Antarctic summer sea ice: a potential iron contribution from glacial basal melt' , JGR Oceans, vol. 125, no. 12 , pp. 1-19 , doi:10.1029/2020JC016130 <http://dx.doi.org/10.1029/2020JC016130>. |
op_doi |
https://doi.org/10.1029/2020JC016130 |
container_title |
Journal of Geophysical Research: Oceans |
container_volume |
125 |
container_issue |
12 |
_version_ |
1766170694989643776 |