Storage and export of microbial biomass across the western Greenland Ice Sheet

Tristram Irvine-Fynn; Arwyn Edwards; Ian Thomas Stevens; Andy Mitchell; Pete Bunting; Jason Box; Karen Cameron; Joseph Cook; Kathrin Naegeli; Sara M. E. Rassner; Jonathan Ryan; Marek Stibal; Christopher Williamson; Alun Hubbard

doi:10.1038/s41467-021-24040-9

Storage and export of microbial biomass across the western Greenland Ice Sheet

Tristram Irvine-Fynn^*
, Arwyn Edwards
, Ian Thomas Stevens
, Andy Mitchell
, Pete Bunting
, Jason Box
, Karen Cameron
, Joseph Cook
, Kathrin Naegeli
, Sara M. E. Rassner
, Jonathan Ryan
, Marek Stibal
, Christopher Williamson
, Alun Hubbard

^*Awdur cyfatebol y gwaith hwn

University of Newcastle Australia
Aarhus University
Geological Survey of Denmark and Greenland
University of Glasgow
University of Sheffield
University of Bern
Brown University
Charles University
University of Bristol
University of Pisa
University of Oulu

Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

30 Dyfyniadau (Scopus)

229 Wedi eu Llwytho i Lawr (Pure)

Crynodeb

The Greenland Ice Sheet harbours a wealth of microbial life, yet the total biomass stored or exported from its surface to downstream environments is unconstrained. Here, we quantify microbial abundance and cellular biomass flux within the near-surface weathering crust photic zone of the western sector of the ice sheet. Using groundwater techniques, we demonstrate that interstitial water flow is slow (~10⁻² m d⁻¹), while flow cytometry enumeration reveals this pathway delivers 5 × 10⁸ cells m⁻² d⁻¹ to supraglacial streams, equivalent to a carbon flux up to 250 g km⁻² d⁻¹. We infer that cellular carbon accumulation in the weathering crust exceeds fluvial export, promoting biomass sequestration, enhanced carbon cycling, and biological albedo reduction. We estimate that up to 37 kg km⁻² of cellular carbon is flushed from the weathering crust environment of the western Greenland Ice Sheet each summer, providing an appreciable flux to support heterotrophs and methanogenesis at the bed.

Iaith wreiddiol	Saesneg
Rhif yr erthygl	3960
Nifer y tudalennau	11
Cyfnodolyn	Nature Communications
Cyfrol	12
Rhif cyhoeddi	1
Dyddiad ar-lein cynnar	25 Meh 2021
Dynodwyr Gwrthrych Digidol (DOIs)	https://doi.org/10.1038/s41467-021-24040-9
Statws	Cyhoeddwyd - 25 Meh 2021

Mynediad at Ddogfen

10.1038/s41467-021-24040-9Trwydded: CC BY

ArticleFersiwn derfynol wedi’i chyhoeddi, 1.66 MBTrwydded: CC BY
Supplementary InformationData, 440 KBTrwydded: CC BY

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Ffeiliau eraill a chysylltiadau

UAV imagery over K-sector of the Greenland Ice Sheet on 8 August 2014
Ryan, J., Hubbard, A., Stibal, M., Irvine-Fynn, T., Cook, J., Smith, L. C., Cameron, K. & Box, J., Prifysgol Aberystwyth | Aberystwyth University, 14 Maw 2018
Dangosydd eitem ddigidol (DOI): 10.1594/PANGAEA.885798
Set ddata
Dataset supporting "Storage and export of microbial biomass across the western Greenland Ice Sheet"
Irvine-Fynn, T., Prifysgol Aberystwyth | Aberystwyth University, 28 Ebr 2021
Dangosydd eitem ddigidol (DOI): 10.5281/zenodo.4623697
Set ddata
atedstone/ebmodel: For: Algal growth and weathering crust structure drive variability in Greenland Ice Sheet ice albedo
Tedstone, A. J. & Irvine-Fynn, T., Prifysgol Aberystwyth | Aberystwyth University, 24 Mai 2019
Dangosydd eitem ddigidol (DOI): 10.5281/zenodo.3228331
Set ddata

5 Wedi Gorffen

How will glacial meltwater microbes come in from the cold in this 'Peak Melt' century - IBERS
Edwards, A. (Arweinydd y Prosiect), Irvine-Fynn, T. (Cyd‑arweinydd Ymchwil), Mitchell, A. P. (Cyd‑arweinydd Ymchwil), Morphew, R. (Cyd‑arweinydd Ymchwil), Mur, L. (Cyd‑arweinydd Ymchwil), Cook, J. (Cymrawd) & Edwards Rassner, S. M. (Cymrawd)
Natural Environment Research Council
01 Rhag 2018 → 31 Mai 2022
Prosiect: Ymchwil a ariannwyd yn allanol
How will glacial meltwater microbes come in from the cold in this 'Peak Melt' century - DGES
Irvine-Fynn, T. (Arweinydd y Prosiect), Mitchell, A. (Cyd‑arweinydd Ymchwil), Cook, J. (Cymrawd) & Edwards Rassner, S. M. (Cymrawd)
Natural Environment Research Council
01 Rhag 2018 → 31 Mai 2022
Prosiect: Ymchwil a ariannwyd yn allanol
Cryo to Bryo: Could fungi from "Snowball Earth" colonize land?
Edwards, A. (Arweinydd y Prosiect)
Leverhulme Trust
01 Awst 2017 → 31 Ion 2019
Prosiect: Ymchwil a ariannwyd yn allanol
Black and Bloom; variation in the albedo of the Greenland Ice Sheet as a result of interactionns between microbes and particulates
Irvine-Fynn, T. (Arweinydd y Prosiect)
Natural Environment Research Council
01 Gorff 2015 → 30 Medi 2021
Prosiect: Ymchwil a ariannwyd yn allanol
Geologic carbon storage in wales- assesing, charactersiing and enhancing unconventional geologic carbon storage reservoirs. GeoCarbCymru CLUSTER, Fellow & student.
Mitchell, A. (Arweinydd y Prosiect), Benning, L. (Cyd‑arweinydd Ymchwil), Bentham, M. (Cyd‑arweinydd Ymchwil), Bevins, R. (Cyd‑arweinydd Ymchwil), Edwards, A. (Cyd‑arweinydd Ymchwil), Edwards Rassner, S. M. (Cyd‑arweinydd Ymchwil), Evans, A. (Cyd‑arweinydd Ymchwil), Farr, G. (Cyd‑arweinydd Ymchwil), Gamboa, D. (Cyd‑arweinydd Ymchwil), Schofield, D. (Cyd‑arweinydd Ymchwil), Thomas, A. (Cyd‑arweinydd Ymchwil), Thomas, H. (Cyd‑arweinydd Ymchwil), Tripathy, S. (Cyd‑arweinydd Ymchwil) & Walker, P. (Cyd‑arweinydd Ymchwil)
The Research Network
17 Rhag 2014 → 31 Rhag 2018
Prosiect: Ymchwil a ariannwyd yn allanol

Dyfynnu hyn

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title = "Storage and export of microbial biomass across the western Greenland Ice Sheet",

abstract = "The Greenland Ice Sheet harbours a wealth of microbial life, yet the total biomass stored or exported from its surface to downstream environments is unconstrained. Here, we quantify microbial abundance and cellular biomass flux within the near-surface weathering crust photic zone of the western sector of the ice sheet. Using groundwater techniques, we demonstrate that interstitial water flow is slow (\textasciitilde{}10−2 m d−1), while flow cytometry enumeration reveals this pathway delivers 5 × 108 cells m−2 d−1 to supraglacial streams, equivalent to a carbon flux up to 250 g km−2 d−1. We infer that cellular carbon accumulation in the weathering crust exceeds fluvial export, promoting biomass sequestration, enhanced carbon cycling, and biological albedo reduction. We estimate that up to 37 kg km−2 of cellular carbon is flushed from the weathering crust environment of the western Greenland Ice Sheet each summer, providing an appreciable flux to support heterotrophs and methanogenesis at the bed.",

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AU - Irvine-Fynn, Tristram

AU - Edwards, Arwyn

AU - Stevens, Ian Thomas

AU - Mitchell, Andy

AU - Bunting, Pete

AU - Box, Jason

AU - Cameron, Karen

AU - Cook, Joseph

AU - Naegeli, Kathrin

AU - Rassner, Sara M. E.

AU - Ryan, Jonathan

AU - Stibal, Marek

AU - Williamson, Christopher

AU - Hubbard, Alun

N1 - This article is licensed under a Creative Commons Attribution 4.0 International License

PY - 2021/6/25

Y1 - 2021/6/25

N2 - The Greenland Ice Sheet harbours a wealth of microbial life, yet the total biomass stored or exported from its surface to downstream environments is unconstrained. Here, we quantify microbial abundance and cellular biomass flux within the near-surface weathering crust photic zone of the western sector of the ice sheet. Using groundwater techniques, we demonstrate that interstitial water flow is slow (~10−2 m d−1), while flow cytometry enumeration reveals this pathway delivers 5 × 108 cells m−2 d−1 to supraglacial streams, equivalent to a carbon flux up to 250 g km−2 d−1. We infer that cellular carbon accumulation in the weathering crust exceeds fluvial export, promoting biomass sequestration, enhanced carbon cycling, and biological albedo reduction. We estimate that up to 37 kg km−2 of cellular carbon is flushed from the weathering crust environment of the western Greenland Ice Sheet each summer, providing an appreciable flux to support heterotrophs and methanogenesis at the bed.

AB - The Greenland Ice Sheet harbours a wealth of microbial life, yet the total biomass stored or exported from its surface to downstream environments is unconstrained. Here, we quantify microbial abundance and cellular biomass flux within the near-surface weathering crust photic zone of the western sector of the ice sheet. Using groundwater techniques, we demonstrate that interstitial water flow is slow (~10−2 m d−1), while flow cytometry enumeration reveals this pathway delivers 5 × 108 cells m−2 d−1 to supraglacial streams, equivalent to a carbon flux up to 250 g km−2 d−1. We infer that cellular carbon accumulation in the weathering crust exceeds fluvial export, promoting biomass sequestration, enhanced carbon cycling, and biological albedo reduction. We estimate that up to 37 kg km−2 of cellular carbon is flushed from the weathering crust environment of the western Greenland Ice Sheet each summer, providing an appreciable flux to support heterotrophs and methanogenesis at the bed.

KW - Biomass

KW - Carbon Cycle

KW - Carbon/analysis

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KW - Hydrology

KW - Ice Cover/chemistry

KW - Weather

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Storage and export of microbial biomass across the western Greenland Ice Sheet

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Mynediad at Ddogfen

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