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...
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ftdatacite:10.6084/m9.figshare.6114644.v1 2023-05-15T16:29:26+02:00 Rapid development of anoxic niches in supraglacial ecosystems Poniecka, Ewa A. Bagshaw, Elizabeth A. Tranter, Martyn Sass, Henrik Williamson, Christopher J. Anesio, Alexandre M. Black And Bloom Team 2018 https://dx.doi.org/10.6084/m9.figshare.6114644.v1 https://tandf.figshare.com/articles/Rapid_development_of_anoxic_niches_in_supraglacial_ecosystems/6114644/1 unknown Taylor & Francis https://dx.doi.org/10.1080/15230430.2017.1420859 https://dx.doi.org/10.6084/m9.figshare.6114644 Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 CC-BY Biochemistry Medicine 59999 Environmental Sciences not elsewhere classified FOS Earth and related environmental sciences Ecology FOS Biological sciences 69999 Biological Sciences not elsewhere classified Developmental Biology Inorganic Chemistry FOS Chemical sciences Text article-journal Journal contribution ScholarlyArticle 2018 ftdatacite https://doi.org/10.6084/m9.figshare.6114644.v1 https://doi.org/10.1080/15230430.2017.1420859 https://doi.org/10.6084/m9.figshare.6114644 2021-11-05T12:55:41Z 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. Text Greenland Ice Sheet DataCite Metadata Store (German National Library of Science and Technology) Greenland |
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Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
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language |
unknown |
topic |
Biochemistry Medicine 59999 Environmental Sciences not elsewhere classified FOS Earth and related environmental sciences Ecology FOS Biological sciences 69999 Biological Sciences not elsewhere classified Developmental Biology Inorganic Chemistry FOS Chemical sciences |
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Biochemistry Medicine 59999 Environmental Sciences not elsewhere classified FOS Earth and related environmental sciences Ecology FOS Biological sciences 69999 Biological Sciences not elsewhere classified Developmental Biology Inorganic Chemistry FOS Chemical sciences Poniecka, Ewa A. Bagshaw, Elizabeth A. Tranter, Martyn Sass, Henrik Williamson, Christopher J. Anesio, Alexandre M. Black And Bloom Team Rapid development of anoxic niches in supraglacial ecosystems |
topic_facet |
Biochemistry Medicine 59999 Environmental Sciences not elsewhere classified FOS Earth and related environmental sciences Ecology FOS Biological sciences 69999 Biological Sciences not elsewhere classified Developmental Biology Inorganic Chemistry FOS Chemical sciences |
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 |
Text |
author |
Poniecka, Ewa A. Bagshaw, Elizabeth A. Tranter, Martyn Sass, Henrik Williamson, Christopher J. Anesio, Alexandre M. Black And Bloom Team |
author_facet |
Poniecka, Ewa A. Bagshaw, Elizabeth A. Tranter, Martyn Sass, Henrik Williamson, Christopher J. Anesio, Alexandre M. Black And Bloom Team |
author_sort |
Poniecka, Ewa A. |
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 & Francis |
publishDate |
2018 |
url |
https://dx.doi.org/10.6084/m9.figshare.6114644.v1 https://tandf.figshare.com/articles/Rapid_development_of_anoxic_niches_in_supraglacial_ecosystems/6114644/1 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Ice Sheet |
genre_facet |
Greenland Ice Sheet |
op_relation |
https://dx.doi.org/10.1080/15230430.2017.1420859 https://dx.doi.org/10.6084/m9.figshare.6114644 |
op_rights |
Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.6084/m9.figshare.6114644.v1 https://doi.org/10.1080/15230430.2017.1420859 https://doi.org/10.6084/m9.figshare.6114644 |
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