Sediment oxygen consumption in Antarctic subglacial environments
Abstract 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 co...
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Online Access: | http://dx.doi.org/10.1002/lno.12366 https://aslopubs.onlinelibrary.wiley.com/doi/am-pdf/10.1002/lno.12366 https://aslopubs.onlinelibrary.wiley.com/doi/pdf/10.1002/lno.12366 |
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crwiley:10.1002/lno.12366 2024-06-02T07:58:34+00:00 Sediment oxygen consumption in Antarctic subglacial environments Michaud, Alexander B. Priscu, John C. National Science Foundation 2023 http://dx.doi.org/10.1002/lno.12366 https://aslopubs.onlinelibrary.wiley.com/doi/am-pdf/10.1002/lno.12366 https://aslopubs.onlinelibrary.wiley.com/doi/pdf/10.1002/lno.12366 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#am http://onlinelibrary.wiley.com/termsAndConditions#vor Limnology and Oceanography volume 68, issue 7, page 1557-1566 ISSN 0024-3590 1939-5590 journal-article 2023 crwiley https://doi.org/10.1002/lno.12366 2024-05-03T11:10:19Z Abstract 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 Wiley Online Library Antarctic Arctic Ross Ice Shelf West Antarctic Ice Sheet Limnology and Oceanography 68 7 1557 1566 |
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Wiley Online Library |
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crwiley |
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English |
description |
Abstract 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. |
author2 |
National Science Foundation |
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 |
publisher |
Wiley |
publishDate |
2023 |
url |
http://dx.doi.org/10.1002/lno.12366 https://aslopubs.onlinelibrary.wiley.com/doi/am-pdf/10.1002/lno.12366 https://aslopubs.onlinelibrary.wiley.com/doi/pdf/10.1002/lno.12366 |
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 |
Limnology and Oceanography volume 68, issue 7, page 1557-1566 ISSN 0024-3590 1939-5590 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#am http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/lno.12366 |
container_title |
Limnology and Oceanography |
container_volume |
68 |
container_issue |
7 |
container_start_page |
1557 |
op_container_end_page |
1566 |
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1800741943097950208 |