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Rapid development of anoxic niches in supraglacial ecosystems

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Rapid development of anoxic niches in supraglacial ecosystems. / Poniecka, E; Bagshaw, Liz; Tranter, Martyn; Sass, H.; Williams, Christopher; Anesio, Alexandre.

In: Arctic, Antarctic, and Alpine Research, Vol. 50, No. 1, e1420859, 2018.

Research output: Contribution to journalArticle

Harvard

Poniecka, E, Bagshaw, L, Tranter, M, Sass, H, Williams, C & Anesio, A 2018, 'Rapid development of anoxic niches in supraglacial ecosystems', Arctic, Antarctic, and Alpine Research, vol. 50, no. 1, e1420859. https://doi.org/10.1080/15230430.2017.1420859

APA

Poniecka, E., Bagshaw, L., Tranter, M., Sass, H., Williams, C., & Anesio, A. (2018). Rapid development of anoxic niches in supraglacial ecosystems. Arctic, Antarctic, and Alpine Research, 50(1), [e1420859]. https://doi.org/10.1080/15230430.2017.1420859

Vancouver

Poniecka E, Bagshaw L, Tranter M, Sass H, Williams C, Anesio A. Rapid development of anoxic niches in supraglacial ecosystems. Arctic, Antarctic, and Alpine Research. 2018;50(1). e1420859. https://doi.org/10.1080/15230430.2017.1420859

Author

Poniecka, E ; Bagshaw, Liz ; Tranter, Martyn ; Sass, H. ; Williams, Christopher ; Anesio, Alexandre. / Rapid development of anoxic niches in supraglacial ecosystems. In: Arctic, Antarctic, and Alpine Research. 2018 ; Vol. 50, No. 1.

Bibtex

@article{464bd54fedcc42679957edb0128029ac,
title = "Rapid development of anoxic niches in supraglacial ecosystems",
abstract = "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 oxygenmicroelectrodes 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.",
keywords = "Cryoconite hole, anoxic niches, Greenland, microbiology, microsensors",
author = "E Poniecka and Liz Bagshaw and Martyn Tranter and H. Sass and Christopher Williams and Alexandre Anesio",
year = "2018",
doi = "10.1080/15230430.2017.1420859",
language = "English",
volume = "50",
journal = "Arctic, Antarctic, and Alpine Research",
issn = "1523-0430",
publisher = "Institute of Arctic and Alpine Research",
number = "1",

}

RIS - suitable for import to EndNote

TY - JOUR

T1 - Rapid development of anoxic niches in supraglacial ecosystems

AU - Poniecka, E

AU - Bagshaw, Liz

AU - Tranter, Martyn

AU - Sass, H.

AU - Williams, Christopher

AU - Anesio, Alexandre

PY - 2018

Y1 - 2018

N2 - 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 oxygenmicroelectrodes 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.

AB - 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 oxygenmicroelectrodes 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.

KW - Cryoconite hole

KW - anoxic niches

KW - Greenland

KW - microbiology

KW - microsensors

U2 - 10.1080/15230430.2017.1420859

DO - 10.1080/15230430.2017.1420859

M3 - Article

VL - 50

JO - Arctic, Antarctic, and Alpine Research

JF - Arctic, Antarctic, and Alpine Research

SN - 1523-0430

IS - 1

M1 - e1420859

ER -