Rapid development of anoxic niches in supraglacial ecosystems
Microorganisms play a significant role in changing the physical properties of the surface of the Greenland Ice Sheet. Cryoconite holes are a hotspot for this microbial activity, yet little is known about the REDOX conditions that develop within them. In this study, we used oxygen microelectrodes and...
Published in: | Arctic, Antarctic, and Alpine Research |
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Taylor and Francis
2018
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Online Access: | https://orca.cardiff.ac.uk/id/eprint/104986/ https://doi.org/10.1080/15230430.2017.1420859 https://orca.cardiff.ac.uk/id/eprint/104986/1/Rapid%20development%20of%20anoxic%20niches%20in%20supraglacial%20ecosystems.pdf |
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ftunivcardiff:oai:https://orca.cardiff.ac.uk:104986 2023-05-15T14:14:42+02:00 Rapid development of anoxic niches in supraglacial ecosystems Poniecka, Ewa Bagshaw, Elizabeth Martyn, Tranter Sass, Henrik Christopher, Williamson Alexandre, Anesio Team, Black and Bloom 2018-03-28 application/pdf https://orca.cardiff.ac.uk/id/eprint/104986/ https://doi.org/10.1080/15230430.2017.1420859 https://orca.cardiff.ac.uk/id/eprint/104986/1/Rapid%20development%20of%20anoxic%20niches%20in%20supraglacial%20ecosystems.pdf en eng Taylor and Francis https://orca.cardiff.ac.uk/id/eprint/104986/1/Rapid%20development%20of%20anoxic%20niches%20in%20supraglacial%20ecosystems.pdf Poniecka, Ewa, Bagshaw, Elizabeth https://orca.cardiff.ac.uk/view/cardiffauthors/A1991811U.html orcid:0000-0001-8392-1750 orcid:0000-0001-8392-1750, Martyn, Tranter, Sass, Henrik https://orca.cardiff.ac.uk/view/cardiffauthors/A033372Z.html orcid:0000-0001-8740-4224 orcid:0000-0001-8740-4224, Christopher, Williamson, Alexandre, Anesio and Team, Black and Bloom 2018. Rapid development of anoxic niches in supraglacial ecosystems. Arctic, Antarctic, and Alpine Research 50 (1) , S100015. 10.1080/15230430.2017.1420859 https://doi.org/10.1080/15230430.2017.1420859 file https://orca.cardiff.ac.uk/104986/1/Rapid%20development%20of%20anoxic%20niches%20in%20supraglacial%20ecosystems.pdf doi:10.1080/15230430.2017.1420859 cc_by CC-BY Article PeerReviewed 2018 ftunivcardiff https://doi.org/10.1080/15230430.2017.1420859 2022-11-03T23:43:12Z Microorganisms play a significant role in changing the physical properties of the surface of the Greenland Ice Sheet. Cryoconite holes are a hotspot for this microbial activity, yet little is known about the REDOX conditions that develop within them. In this study, we used oxygen microelectrodes and microoptodes to measure for anoxic conditions at the microscale, for the first time revealing a potential niche for anaerobic microorganisms and anaerobic processes. The development of an anoxic zone 2 mm deep within a 6 mm-thick layer of cryoconite sediment was observed within an hour of disturbance, showing rapid acclimation to changing physical conditions. Long-term (half year) incubations of cryoconite material showed a peak of oxygen production and consumption after forty days and reached a low-activity, steady state by day 116, with a persisting anoxic zone beginning between 2 mm and 4 mm deep. Anaerobic microorganisms, which have received little attention to date, should therefore be considered an important component of the cryoconite ecosystem. We discuss the possible dynamics of oxygen concentrations in the supraglacial system and infer that anoxic zones are an important factor in the development of cryoconite sediment communities. Article in Journal/Newspaper Antarctic and Alpine Research Arctic Greenland Ice Sheet Cardiff University: ORCA (Online Research @ Cardiff) Greenland Arctic, Antarctic, and Alpine Research 50 1 |
institution |
Open Polar |
collection |
Cardiff University: ORCA (Online Research @ Cardiff) |
op_collection_id |
ftunivcardiff |
language |
English |
description |
Microorganisms play a significant role in changing the physical properties of the surface of the Greenland Ice Sheet. Cryoconite holes are a hotspot for this microbial activity, yet little is known about the REDOX conditions that develop within them. In this study, we used oxygen microelectrodes and microoptodes to measure for anoxic conditions at the microscale, for the first time revealing a potential niche for anaerobic microorganisms and anaerobic processes. The development of an anoxic zone 2 mm deep within a 6 mm-thick layer of cryoconite sediment was observed within an hour of disturbance, showing rapid acclimation to changing physical conditions. Long-term (half year) incubations of cryoconite material showed a peak of oxygen production and consumption after forty days and reached a low-activity, steady state by day 116, with a persisting anoxic zone beginning between 2 mm and 4 mm deep. Anaerobic microorganisms, which have received little attention to date, should therefore be considered an important component of the cryoconite ecosystem. We discuss the possible dynamics of oxygen concentrations in the supraglacial system and infer that anoxic zones are an important factor in the development of cryoconite sediment communities. |
format |
Article in Journal/Newspaper |
author |
Poniecka, Ewa Bagshaw, Elizabeth Martyn, Tranter Sass, Henrik Christopher, Williamson Alexandre, Anesio Team, Black and Bloom |
spellingShingle |
Poniecka, Ewa Bagshaw, Elizabeth Martyn, Tranter Sass, Henrik Christopher, Williamson Alexandre, Anesio Team, Black and Bloom Rapid development of anoxic niches in supraglacial ecosystems |
author_facet |
Poniecka, Ewa Bagshaw, Elizabeth Martyn, Tranter Sass, Henrik Christopher, Williamson Alexandre, Anesio Team, Black and Bloom |
author_sort |
Poniecka, Ewa |
title |
Rapid development of anoxic niches in supraglacial ecosystems |
title_short |
Rapid development of anoxic niches in supraglacial ecosystems |
title_full |
Rapid development of anoxic niches in supraglacial ecosystems |
title_fullStr |
Rapid development of anoxic niches in supraglacial ecosystems |
title_full_unstemmed |
Rapid development of anoxic niches in supraglacial ecosystems |
title_sort |
rapid development of anoxic niches in supraglacial ecosystems |
publisher |
Taylor and Francis |
publishDate |
2018 |
url |
https://orca.cardiff.ac.uk/id/eprint/104986/ https://doi.org/10.1080/15230430.2017.1420859 https://orca.cardiff.ac.uk/id/eprint/104986/1/Rapid%20development%20of%20anoxic%20niches%20in%20supraglacial%20ecosystems.pdf |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Antarctic and Alpine Research Arctic Greenland Ice Sheet |
genre_facet |
Antarctic and Alpine Research Arctic Greenland Ice Sheet |
op_relation |
https://orca.cardiff.ac.uk/id/eprint/104986/1/Rapid%20development%20of%20anoxic%20niches%20in%20supraglacial%20ecosystems.pdf Poniecka, Ewa, Bagshaw, Elizabeth https://orca.cardiff.ac.uk/view/cardiffauthors/A1991811U.html orcid:0000-0001-8392-1750 orcid:0000-0001-8392-1750, Martyn, Tranter, Sass, Henrik https://orca.cardiff.ac.uk/view/cardiffauthors/A033372Z.html orcid:0000-0001-8740-4224 orcid:0000-0001-8740-4224, Christopher, Williamson, Alexandre, Anesio and Team, Black and Bloom 2018. Rapid development of anoxic niches in supraglacial ecosystems. Arctic, Antarctic, and Alpine Research 50 (1) , S100015. 10.1080/15230430.2017.1420859 https://doi.org/10.1080/15230430.2017.1420859 file https://orca.cardiff.ac.uk/104986/1/Rapid%20development%20of%20anoxic%20niches%20in%20supraglacial%20ecosystems.pdf doi:10.1080/15230430.2017.1420859 |
op_rights |
cc_by |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1080/15230430.2017.1420859 |
container_title |
Arctic, Antarctic, and Alpine Research |
container_volume |
50 |
container_issue |
1 |
_version_ |
1766287021475627008 |