Sediment oxygen consumption in Antarctic subglacial environments
Oxygen consumption in aquatic sediments is an indicator of overall biological activity of the ecosystem. As such, rates of sedimentary oxygen utilization are well documented for much of the open oceans and freshwater lakes. However, there are few direct measurements of sedimentary oxygen consumption...
Published in: | Limnology and Oceanography |
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Language: | English |
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2023
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ftuniaarhuspubl:oai:pure.atira.dk:publications/810df1af-1c94-4032-ba51-12fc29e74219 2023-09-26T15:11:45+02:00 Sediment oxygen consumption in Antarctic subglacial environments Michaud, Alexander B. Priscu, John C. 2023-07 https://pure.au.dk/portal/da/publications/sediment-oxygen-consumption-in-antarctic-subglacial-environments(810df1af-1c94-4032-ba51-12fc29e74219).html https://doi.org/10.1002/lno.12366 http://www.scopus.com/inward/record.url?scp=85159622063&partnerID=8YFLogxK eng eng info:eu-repo/semantics/restrictedAccess Michaud , A B & Priscu , J C 2023 , ' Sediment oxygen consumption in Antarctic subglacial environments ' , Limnology and Oceanography , vol. 68 , no. 7 , pp. 1557-1566 . https://doi.org/10.1002/lno.12366 article 2023 ftuniaarhuspubl https://doi.org/10.1002/lno.12366 2023-08-30T22:58:34Z Oxygen consumption in aquatic sediments is an indicator of overall biological activity of the ecosystem. As such, rates of sedimentary oxygen utilization are well documented for much of the open oceans and freshwater lakes. However, there are few direct measurements of sedimentary oxygen consumption from Antarctic subglacial aquatic sediments. We report the first microsensor oxygen profiles and derived sedimentary oxygen consumption rates from beneath the Ross Ice Shelf and a subglacial lake beneath the West Antarctic Ice Sheet. Rates of oxygen consumption in these two environments are relatively low, but comparable to those reported from ice-free polar oceans and oligotrophic Arctic lakes. Our study demonstrates the presence of oxygen within Antarctic subglacial aquatic sediments and its importance for oxygen-consuming microorganisms living in these ecosystems. Article in Journal/Newspaper Antarc* Antarctic Arctic Ice Sheet Ice Shelf Ross Ice Shelf Aarhus University: Research Antarctic Arctic Ross Ice Shelf West Antarctic Ice Sheet Limnology and Oceanography |
institution |
Open Polar |
collection |
Aarhus University: Research |
op_collection_id |
ftuniaarhuspubl |
language |
English |
description |
Oxygen consumption in aquatic sediments is an indicator of overall biological activity of the ecosystem. As such, rates of sedimentary oxygen utilization are well documented for much of the open oceans and freshwater lakes. However, there are few direct measurements of sedimentary oxygen consumption from Antarctic subglacial aquatic sediments. We report the first microsensor oxygen profiles and derived sedimentary oxygen consumption rates from beneath the Ross Ice Shelf and a subglacial lake beneath the West Antarctic Ice Sheet. Rates of oxygen consumption in these two environments are relatively low, but comparable to those reported from ice-free polar oceans and oligotrophic Arctic lakes. Our study demonstrates the presence of oxygen within Antarctic subglacial aquatic sediments and its importance for oxygen-consuming microorganisms living in these ecosystems. |
format |
Article in Journal/Newspaper |
author |
Michaud, Alexander B. Priscu, John C. |
spellingShingle |
Michaud, Alexander B. Priscu, John C. Sediment oxygen consumption in Antarctic subglacial environments |
author_facet |
Michaud, Alexander B. Priscu, John C. |
author_sort |
Michaud, Alexander B. |
title |
Sediment oxygen consumption in Antarctic subglacial environments |
title_short |
Sediment oxygen consumption in Antarctic subglacial environments |
title_full |
Sediment oxygen consumption in Antarctic subglacial environments |
title_fullStr |
Sediment oxygen consumption in Antarctic subglacial environments |
title_full_unstemmed |
Sediment oxygen consumption in Antarctic subglacial environments |
title_sort |
sediment oxygen consumption in antarctic subglacial environments |
publishDate |
2023 |
url |
https://pure.au.dk/portal/da/publications/sediment-oxygen-consumption-in-antarctic-subglacial-environments(810df1af-1c94-4032-ba51-12fc29e74219).html https://doi.org/10.1002/lno.12366 http://www.scopus.com/inward/record.url?scp=85159622063&partnerID=8YFLogxK |
geographic |
Antarctic Arctic Ross Ice Shelf West Antarctic Ice Sheet |
geographic_facet |
Antarctic Arctic Ross Ice Shelf West Antarctic Ice Sheet |
genre |
Antarc* Antarctic Arctic Ice Sheet Ice Shelf Ross Ice Shelf |
genre_facet |
Antarc* Antarctic Arctic Ice Sheet Ice Shelf Ross Ice Shelf |
op_source |
Michaud , A B & Priscu , J C 2023 , ' Sediment oxygen consumption in Antarctic subglacial environments ' , Limnology and Oceanography , vol. 68 , no. 7 , pp. 1557-1566 . https://doi.org/10.1002/lno.12366 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1002/lno.12366 |
container_title |
Limnology and Oceanography |
_version_ |
1778132101063770112 |