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...

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Published in:Journal of Geophysical Research: Oceans
Main Authors: Duprat, LPADM, Corkill, M, Genovese, C, Townsend, AT, Moreau, S, Meiners, KM, Lannuzel, D
Format: Article in Journal/Newspaper
Language:English
Published: Wiley-Blackwell Publishing Inc. 2020
Subjects:
Online Access:https://eprints.utas.edu.au/36009/
https://eprints.utas.edu.au/36009/1/142657%20-%20Nutrient%20distribution%20in%20East%20Antarctic%20summer%20sea%20ice.pdf
id ftunivtasmania:oai:eprints.utas.edu.au:36009
record_format openpolar
spelling 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
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