Variation in bacterial composition, diversity, and activity across different subglacial basal ice types
Glaciers and ice sheets possess basal ice layers characterized by high amounts of entrained debris that can serve as sources of nutrients and organic matter, providing a habitat for microorganisms adapted to the frozen conditions. Basal ice forms through various mechanisms and is classified based on...
Published in: | The Cryosphere |
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Copernicus Publications
2022
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00062813 2023-05-15T16:37:12+02:00 Variation in bacterial composition, diversity, and activity across different subglacial basal ice types Doyle, Shawn M. Christner, Brent C. 2022-10 electronic https://doi.org/10.5194/tc-16-4033-2022 https://noa.gwlb.de/receive/cop_mods_00062813 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00061986/tc-16-4033-2022.pdf https://tc.copernicus.org/articles/16/4033/2022/tc-16-4033-2022.pdf eng eng Copernicus Publications The Cryosphere -- ˜Theœ Cryosphere -- http://www.bibliothek.uni-regensburg.de/ezeit/?2393169 -- http://www.the-cryosphere.net/ -- 1994-0424 https://doi.org/10.5194/tc-16-4033-2022 https://noa.gwlb.de/receive/cop_mods_00062813 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00061986/tc-16-4033-2022.pdf https://tc.copernicus.org/articles/16/4033/2022/tc-16-4033-2022.pdf https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess CC-BY article Verlagsveröffentlichung article Text doc-type:article 2022 ftnonlinearchiv https://doi.org/10.5194/tc-16-4033-2022 2022-10-09T23:12:06Z Glaciers and ice sheets possess basal ice layers characterized by high amounts of entrained debris that can serve as sources of nutrients and organic matter, providing a habitat for microorganisms adapted to the frozen conditions. Basal ice forms through various mechanisms and is classified based on ice and debris content; however, little is known about variation in microbial composition, diversity, and activity across different basal ice types. We investigated these parameters in four different types of basal ice from a cold-based and temperate glacier and used a meta-analysis to compare our findings with microbiome studies from other frozen environments. We found basal ice environments harbor a diverse range of microbiomes whose composition and activity can vary significantly between basal ice types, even within adjacent facies from the same glacier. In some debris-rich basal ices, elevated ATP concentrations, isotopic gas signatures, and high 16S rRNA/rDNA amplicon ratios implicated certain bacterial taxa (e.g., Paenisporosarcina, Desulfocapsa, Syntrophus, and Desulfosporosinus) as being potentially active, with ice temperature appearing to be an important predictor for the diversity of inferred active taxa. Compared to those of other sympagic environments, the basal ice microbiomes more closely resemble those found in permafrost or perennial cave ice than glacial ice. In contrast, debris-poor basal ices harbored microbiomes more like those found in englacial ice. Collectively, these results suggest that different basal ice types contain distinct microbiomes that are actively structured by physicochemical properties of their habitat. Article in Journal/Newspaper Ice permafrost The Cryosphere Niedersächsisches Online-Archiv NOA The Cryosphere 16 10 4033 4051 |
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Niedersächsisches Online-Archiv NOA |
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English |
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article Verlagsveröffentlichung |
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article Verlagsveröffentlichung Doyle, Shawn M. Christner, Brent C. Variation in bacterial composition, diversity, and activity across different subglacial basal ice types |
topic_facet |
article Verlagsveröffentlichung |
description |
Glaciers and ice sheets possess basal ice layers characterized by high amounts of entrained debris that can serve as sources of nutrients and organic matter, providing a habitat for microorganisms adapted to the frozen conditions. Basal ice forms through various mechanisms and is classified based on ice and debris content; however, little is known about variation in microbial composition, diversity, and activity across different basal ice types. We investigated these parameters in four different types of basal ice from a cold-based and temperate glacier and used a meta-analysis to compare our findings with microbiome studies from other frozen environments. We found basal ice environments harbor a diverse range of microbiomes whose composition and activity can vary significantly between basal ice types, even within adjacent facies from the same glacier. In some debris-rich basal ices, elevated ATP concentrations, isotopic gas signatures, and high 16S rRNA/rDNA amplicon ratios implicated certain bacterial taxa (e.g., Paenisporosarcina, Desulfocapsa, Syntrophus, and Desulfosporosinus) as being potentially active, with ice temperature appearing to be an important predictor for the diversity of inferred active taxa. Compared to those of other sympagic environments, the basal ice microbiomes more closely resemble those found in permafrost or perennial cave ice than glacial ice. In contrast, debris-poor basal ices harbored microbiomes more like those found in englacial ice. Collectively, these results suggest that different basal ice types contain distinct microbiomes that are actively structured by physicochemical properties of their habitat. |
format |
Article in Journal/Newspaper |
author |
Doyle, Shawn M. Christner, Brent C. |
author_facet |
Doyle, Shawn M. Christner, Brent C. |
author_sort |
Doyle, Shawn M. |
title |
Variation in bacterial composition, diversity, and activity across different subglacial basal ice types |
title_short |
Variation in bacterial composition, diversity, and activity across different subglacial basal ice types |
title_full |
Variation in bacterial composition, diversity, and activity across different subglacial basal ice types |
title_fullStr |
Variation in bacterial composition, diversity, and activity across different subglacial basal ice types |
title_full_unstemmed |
Variation in bacterial composition, diversity, and activity across different subglacial basal ice types |
title_sort |
variation in bacterial composition, diversity, and activity across different subglacial basal ice types |
publisher |
Copernicus Publications |
publishDate |
2022 |
url |
https://doi.org/10.5194/tc-16-4033-2022 https://noa.gwlb.de/receive/cop_mods_00062813 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00061986/tc-16-4033-2022.pdf https://tc.copernicus.org/articles/16/4033/2022/tc-16-4033-2022.pdf |
genre |
Ice permafrost The Cryosphere |
genre_facet |
Ice permafrost The Cryosphere |
op_relation |
The Cryosphere -- ˜Theœ Cryosphere -- http://www.bibliothek.uni-regensburg.de/ezeit/?2393169 -- http://www.the-cryosphere.net/ -- 1994-0424 https://doi.org/10.5194/tc-16-4033-2022 https://noa.gwlb.de/receive/cop_mods_00062813 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00061986/tc-16-4033-2022.pdf https://tc.copernicus.org/articles/16/4033/2022/tc-16-4033-2022.pdf |
op_rights |
https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.5194/tc-16-4033-2022 |
container_title |
The Cryosphere |
container_volume |
16 |
container_issue |
10 |
container_start_page |
4033 |
op_container_end_page |
4051 |
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1766027504162701312 |