Microbially-driven export of labile organic carbon from the Greenland Ice Sheet
Glaciers and ice sheets are significant sources of dissolved organic carbon and nutrients to downstream subglacial and marine ecosystems. Climatically-driven increases in glacial runoff are expected to intensify the impact of exported nutrients on local and regional downstream environments. However,...
Published in: | Nature Geoscience |
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2017
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Online Access: | https://hdl.handle.net/1983/76b8b480-daab-4888-969e-f7bbe5003dec https://research-information.bris.ac.uk/en/publications/76b8b480-daab-4888-969e-f7bbe5003dec https://doi.org/10.1038/ngeo2920 https://research-information.bris.ac.uk/ws/files/103935997/17480_4_merged_1485339422_accepted.pdf |
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ftubristolcris:oai:research-information.bris.ac.uk:publications/76b8b480-daab-4888-969e-f7bbe5003dec 2024-05-19T07:40:41+00:00 Microbially-driven export of labile organic carbon from the Greenland Ice Sheet Musilova, Michaela Tranter, Martyn Wadham, Jemma Telling, Jon Tedstone, Andrew Anesio, Alexandre 2017-05 application/pdf https://hdl.handle.net/1983/76b8b480-daab-4888-969e-f7bbe5003dec https://research-information.bris.ac.uk/en/publications/76b8b480-daab-4888-969e-f7bbe5003dec https://doi.org/10.1038/ngeo2920 https://research-information.bris.ac.uk/ws/files/103935997/17480_4_merged_1485339422_accepted.pdf eng eng https://research-information.bris.ac.uk/en/publications/76b8b480-daab-4888-969e-f7bbe5003dec info:eu-repo/semantics/openAccess Musilova , M , Tranter , M , Wadham , J , Telling , J , Tedstone , A & Anesio , A 2017 , ' Microbially-driven export of labile organic carbon from the Greenland Ice Sheet ' , Nature Geoscience , vol. 10 , no. 5 , pp. 360–365 . https://doi.org/10.1038/ngeo2920 article 2017 ftubristolcris https://doi.org/10.1038/ngeo2920 2024-04-30T23:42:49Z Glaciers and ice sheets are significant sources of dissolved organic carbon and nutrients to downstream subglacial and marine ecosystems. Climatically-driven increases in glacial runoff are expected to intensify the impact of exported nutrients on local and regional downstream environments. However, the origin and bioreactivity of dissolved organic carbon from glacier surfaces are not fully understood. Here, we present data comprising of simultaneous measurements of gross primary production, community respiration, dissolved organic carbon composition and export from different surface habitats of the Greenland Ice Sheet, throughout the ablation season. We found that microbial production was significantly correlated with the concentration of labile dissolved organic species in glacier surface meltwater (Pearson correlation p<0.001). Further, we determined that freely-available organic compounds made up 62% of the dissolved organic carbon exported from the glacier surface through streams. We therefore conclude that microbial communities were the primary driver for labile dissolved organic carbon production and recycling on glacier surfaces (up to 1.12 ± 0.14 mg C L −1 d −1 carbon production), and that glacier dissolved organic carbon export is dependent on active microbial processes during the melt season. Article in Journal/Newspaper glacier Greenland Ice Sheet University of Bristol: Bristol Research Nature Geoscience 10 5 360 365 |
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Open Polar |
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University of Bristol: Bristol Research |
op_collection_id |
ftubristolcris |
language |
English |
description |
Glaciers and ice sheets are significant sources of dissolved organic carbon and nutrients to downstream subglacial and marine ecosystems. Climatically-driven increases in glacial runoff are expected to intensify the impact of exported nutrients on local and regional downstream environments. However, the origin and bioreactivity of dissolved organic carbon from glacier surfaces are not fully understood. Here, we present data comprising of simultaneous measurements of gross primary production, community respiration, dissolved organic carbon composition and export from different surface habitats of the Greenland Ice Sheet, throughout the ablation season. We found that microbial production was significantly correlated with the concentration of labile dissolved organic species in glacier surface meltwater (Pearson correlation p<0.001). Further, we determined that freely-available organic compounds made up 62% of the dissolved organic carbon exported from the glacier surface through streams. We therefore conclude that microbial communities were the primary driver for labile dissolved organic carbon production and recycling on glacier surfaces (up to 1.12 ± 0.14 mg C L −1 d −1 carbon production), and that glacier dissolved organic carbon export is dependent on active microbial processes during the melt season. |
format |
Article in Journal/Newspaper |
author |
Musilova, Michaela Tranter, Martyn Wadham, Jemma Telling, Jon Tedstone, Andrew Anesio, Alexandre |
spellingShingle |
Musilova, Michaela Tranter, Martyn Wadham, Jemma Telling, Jon Tedstone, Andrew Anesio, Alexandre Microbially-driven export of labile organic carbon from the Greenland Ice Sheet |
author_facet |
Musilova, Michaela Tranter, Martyn Wadham, Jemma Telling, Jon Tedstone, Andrew Anesio, Alexandre |
author_sort |
Musilova, Michaela |
title |
Microbially-driven export of labile organic carbon from the Greenland Ice Sheet |
title_short |
Microbially-driven export of labile organic carbon from the Greenland Ice Sheet |
title_full |
Microbially-driven export of labile organic carbon from the Greenland Ice Sheet |
title_fullStr |
Microbially-driven export of labile organic carbon from the Greenland Ice Sheet |
title_full_unstemmed |
Microbially-driven export of labile organic carbon from the Greenland Ice Sheet |
title_sort |
microbially-driven export of labile organic carbon from the greenland ice sheet |
publishDate |
2017 |
url |
https://hdl.handle.net/1983/76b8b480-daab-4888-969e-f7bbe5003dec https://research-information.bris.ac.uk/en/publications/76b8b480-daab-4888-969e-f7bbe5003dec https://doi.org/10.1038/ngeo2920 https://research-information.bris.ac.uk/ws/files/103935997/17480_4_merged_1485339422_accepted.pdf |
genre |
glacier Greenland Ice Sheet |
genre_facet |
glacier Greenland Ice Sheet |
op_source |
Musilova , M , Tranter , M , Wadham , J , Telling , J , Tedstone , A & Anesio , A 2017 , ' Microbially-driven export of labile organic carbon from the Greenland Ice Sheet ' , Nature Geoscience , vol. 10 , no. 5 , pp. 360–365 . https://doi.org/10.1038/ngeo2920 |
op_relation |
https://research-information.bris.ac.uk/en/publications/76b8b480-daab-4888-969e-f7bbe5003dec |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1038/ngeo2920 |
container_title |
Nature Geoscience |
container_volume |
10 |
container_issue |
5 |
container_start_page |
360 |
op_container_end_page |
365 |
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1799480267369349120 |