Potential Activity of Subglacial Microbiota Transported to Anoxic River Delta Sediments
The Watson River drains a portion of the SW Greenland ice sheet, transporting microbial communities from subglacial environments to a delta at the head of Søndre Strømfjord. This study investigates the potential activity and community shifts of glacial microbiota deposited and buried under layers of...
Published in: | Microbial Ecology |
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Main Authors: | , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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2017
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Online Access: | https://curis.ku.dk/portal/da/publications/potential-activity-of-subglacial-microbiota-transported-to-anoxic-river-delta-sediments(75ae031a-37ce-48d1-a96b-dd514003762a).html https://doi.org/10.1007/s00248-016-0926-2 https://curis.ku.dk/ws/files/178316274/Potential_Activity_of_Subglacial_Microbiota_Transported_to_Anoxic_River_Delta_Sediments.pdf |
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ftcopenhagenunip:oai:pure.atira.dk:publications/75ae031a-37ce-48d1-a96b-dd514003762a 2024-05-12T08:04:38+00:00 Potential Activity of Subglacial Microbiota Transported to Anoxic River Delta Sediments Cameron, Karen A. Stibal, Marek Olsen, Nikoline S. Mikkelsen, Andreas B. Elberling, Bo Jacobsen, Carsten S. 2017 application/pdf https://curis.ku.dk/portal/da/publications/potential-activity-of-subglacial-microbiota-transported-to-anoxic-river-delta-sediments(75ae031a-37ce-48d1-a96b-dd514003762a).html https://doi.org/10.1007/s00248-016-0926-2 https://curis.ku.dk/ws/files/178316274/Potential_Activity_of_Subglacial_Microbiota_Transported_to_Anoxic_River_Delta_Sediments.pdf eng eng info:eu-repo/semantics/openAccess Cameron , K A , Stibal , M , Olsen , N S , Mikkelsen , A B , Elberling , B & Jacobsen , C S 2017 , ' Potential Activity of Subglacial Microbiota Transported to Anoxic River Delta Sediments ' , Microbial Ecology , vol. 74 , no. 1 , pp. 6-9 . https://doi.org/10.1007/s00248-016-0926-2 Meltwater export Methane oxidation Methanogenesis River delta Subglacial environment Sulphate reduction article 2017 ftcopenhagenunip https://doi.org/10.1007/s00248-016-0926-2 2024-04-18T00:28:13Z The Watson River drains a portion of the SW Greenland ice sheet, transporting microbial communities from subglacial environments to a delta at the head of Søndre Strømfjord. This study investigates the potential activity and community shifts of glacial microbiota deposited and buried under layers of sediments within the river delta. A long-term (12-month) incubation experiment was established using Watson River delta sediment under anaerobic conditions, with and without CO 2 /H 2 enrichment. Within CO 2 /H 2 -amended incubations, sulphate depletion and a shift in the microbial community to a 52% predominance of Desulfosporosinus meridiei by day 371 provides evidence for sulphate reduction. We found evidence of methanogenesis in CO 2 /H 2 -amended incubations within the first 5 months, with production rates of ~4 pmol g −1 d −1 , which was likely performed by methanogenic Methanomicrobiales- and Methanosarcinales-related organisms. Later, a reduction in methane was observed to be paired with the depletion of sulphate, and we hypothesise that sulphate reduction out competed hydrogenotrophic methanogenesis. The structure and diversity of the original CO 2 /H 2 -amended incubation communities changed dramatically with a major shift in predominant community members and a decline in diversity and cell abundance. These results highlight the need for further investigations into the fate of subglacial microbiota within downstream environments. Article in Journal/Newspaper Greenland Ice Sheet Søndre strømfjord University of Copenhagen: Research Greenland Microbial Ecology 74 1 6 9 |
institution |
Open Polar |
collection |
University of Copenhagen: Research |
op_collection_id |
ftcopenhagenunip |
language |
English |
topic |
Meltwater export Methane oxidation Methanogenesis River delta Subglacial environment Sulphate reduction |
spellingShingle |
Meltwater export Methane oxidation Methanogenesis River delta Subglacial environment Sulphate reduction Cameron, Karen A. Stibal, Marek Olsen, Nikoline S. Mikkelsen, Andreas B. Elberling, Bo Jacobsen, Carsten S. Potential Activity of Subglacial Microbiota Transported to Anoxic River Delta Sediments |
topic_facet |
Meltwater export Methane oxidation Methanogenesis River delta Subglacial environment Sulphate reduction |
description |
The Watson River drains a portion of the SW Greenland ice sheet, transporting microbial communities from subglacial environments to a delta at the head of Søndre Strømfjord. This study investigates the potential activity and community shifts of glacial microbiota deposited and buried under layers of sediments within the river delta. A long-term (12-month) incubation experiment was established using Watson River delta sediment under anaerobic conditions, with and without CO 2 /H 2 enrichment. Within CO 2 /H 2 -amended incubations, sulphate depletion and a shift in the microbial community to a 52% predominance of Desulfosporosinus meridiei by day 371 provides evidence for sulphate reduction. We found evidence of methanogenesis in CO 2 /H 2 -amended incubations within the first 5 months, with production rates of ~4 pmol g −1 d −1 , which was likely performed by methanogenic Methanomicrobiales- and Methanosarcinales-related organisms. Later, a reduction in methane was observed to be paired with the depletion of sulphate, and we hypothesise that sulphate reduction out competed hydrogenotrophic methanogenesis. The structure and diversity of the original CO 2 /H 2 -amended incubation communities changed dramatically with a major shift in predominant community members and a decline in diversity and cell abundance. These results highlight the need for further investigations into the fate of subglacial microbiota within downstream environments. |
format |
Article in Journal/Newspaper |
author |
Cameron, Karen A. Stibal, Marek Olsen, Nikoline S. Mikkelsen, Andreas B. Elberling, Bo Jacobsen, Carsten S. |
author_facet |
Cameron, Karen A. Stibal, Marek Olsen, Nikoline S. Mikkelsen, Andreas B. Elberling, Bo Jacobsen, Carsten S. |
author_sort |
Cameron, Karen A. |
title |
Potential Activity of Subglacial Microbiota Transported to Anoxic River Delta Sediments |
title_short |
Potential Activity of Subglacial Microbiota Transported to Anoxic River Delta Sediments |
title_full |
Potential Activity of Subglacial Microbiota Transported to Anoxic River Delta Sediments |
title_fullStr |
Potential Activity of Subglacial Microbiota Transported to Anoxic River Delta Sediments |
title_full_unstemmed |
Potential Activity of Subglacial Microbiota Transported to Anoxic River Delta Sediments |
title_sort |
potential activity of subglacial microbiota transported to anoxic river delta sediments |
publishDate |
2017 |
url |
https://curis.ku.dk/portal/da/publications/potential-activity-of-subglacial-microbiota-transported-to-anoxic-river-delta-sediments(75ae031a-37ce-48d1-a96b-dd514003762a).html https://doi.org/10.1007/s00248-016-0926-2 https://curis.ku.dk/ws/files/178316274/Potential_Activity_of_Subglacial_Microbiota_Transported_to_Anoxic_River_Delta_Sediments.pdf |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Ice Sheet Søndre strømfjord |
genre_facet |
Greenland Ice Sheet Søndre strømfjord |
op_source |
Cameron , K A , Stibal , M , Olsen , N S , Mikkelsen , A B , Elberling , B & Jacobsen , C S 2017 , ' Potential Activity of Subglacial Microbiota Transported to Anoxic River Delta Sediments ' , Microbial Ecology , vol. 74 , no. 1 , pp. 6-9 . https://doi.org/10.1007/s00248-016-0926-2 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1007/s00248-016-0926-2 |
container_title |
Microbial Ecology |
container_volume |
74 |
container_issue |
1 |
container_start_page |
6 |
op_container_end_page |
9 |
_version_ |
1798846862714732544 |