Biogeochemical and historical drivers of microbial community composition and structure in sediments from Mercer Subglacial Lake, West Antarctica ...
Ice streams that flow into Ross Ice Shelf are underlain by water-saturated sediments, a dynamic hydrological system, and subglacial lakes that intermittently discharge water downstream across grounding zones of West Antarctic Ice Sheet (WAIS). A 2.06 m composite sediment profile was recently recover...
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ftdatacite:10.17169/refubium-40917 2023-12-03T10:10:37+01:00 Biogeochemical and historical drivers of microbial community composition and structure in sediments from Mercer Subglacial Lake, West Antarctica ... Davis, Christina B. Venturelli, Ryan R. Michaud, Alexander M. Hawkings, Jon J. Achberger, Amanda E. Vick-Majors, Trista E. Rosenheim, Brad Dore, John L. Steigmeyer, August D. Benning, Liane G. 2023 https://dx.doi.org/10.17169/refubium-40917 https://refubium.fu-berlin.de/handle/fub188/41196 unknown Freie Universität Berlin https://doi.org/10.1038/s43705-023-00216-w https://dx.doi.org/10.1038/s43705-023-00216-w https://doi.org/10.1038/s43705-023-00216-w Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 microbial community composition microbial structure sediments 500 Naturwissenschaften und Mathematik570 Biowissenschaften; Biologie570 Biowissenschaften; Biologie ScholarlyArticle Text article-journal Wissenschaftlicher Artikel 2023 ftdatacite https://doi.org/10.17169/refubium-4091710.1038/s43705-023-00216-w 2023-11-03T10:58:26Z Ice streams that flow into Ross Ice Shelf are underlain by water-saturated sediments, a dynamic hydrological system, and subglacial lakes that intermittently discharge water downstream across grounding zones of West Antarctic Ice Sheet (WAIS). A 2.06 m composite sediment profile was recently recovered from Mercer Subglacial Lake, a 15 m deep water cavity beneath a 1087 m thick portion of the Mercer Ice Stream. We examined microbial abundances, used 16S rRNA gene amplicon sequencing to assess community structures, and characterized extracellular polymeric substances (EPS) associated with distinct lithologic units in the sediments. Bacterial and archaeal communities in the surficial sediments are more abundant and diverse, with significantly different compositions from those found deeper in the sediment column. The most abundant taxa are related to chemolithoautotrophs capable of oxidizing reduced nitrogen, sulfur, and iron compounds with oxygen, nitrate, or iron. Concentrations of dissolved methane and total ... Text Antarc* Antarctic Antarctica Ice Sheet Ice Shelf Mercer Ice Stream Ross Ice Shelf West Antarctica DataCite Metadata Store (German National Library of Science and Technology) Antarctic Mercer ENVELOPE(65.647,65.647,-70.227,-70.227) Mercer Ice Stream ENVELOPE(-145.000,-145.000,-84.833,-84.833) Ross Ice Shelf West Antarctic Ice Sheet West Antarctica |
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Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
unknown |
topic |
microbial community composition microbial structure sediments 500 Naturwissenschaften und Mathematik570 Biowissenschaften; Biologie570 Biowissenschaften; Biologie |
spellingShingle |
microbial community composition microbial structure sediments 500 Naturwissenschaften und Mathematik570 Biowissenschaften; Biologie570 Biowissenschaften; Biologie Davis, Christina B. Venturelli, Ryan R. Michaud, Alexander M. Hawkings, Jon J. Achberger, Amanda E. Vick-Majors, Trista E. Rosenheim, Brad Dore, John L. Steigmeyer, August D. Benning, Liane G. Biogeochemical and historical drivers of microbial community composition and structure in sediments from Mercer Subglacial Lake, West Antarctica ... |
topic_facet |
microbial community composition microbial structure sediments 500 Naturwissenschaften und Mathematik570 Biowissenschaften; Biologie570 Biowissenschaften; Biologie |
description |
Ice streams that flow into Ross Ice Shelf are underlain by water-saturated sediments, a dynamic hydrological system, and subglacial lakes that intermittently discharge water downstream across grounding zones of West Antarctic Ice Sheet (WAIS). A 2.06 m composite sediment profile was recently recovered from Mercer Subglacial Lake, a 15 m deep water cavity beneath a 1087 m thick portion of the Mercer Ice Stream. We examined microbial abundances, used 16S rRNA gene amplicon sequencing to assess community structures, and characterized extracellular polymeric substances (EPS) associated with distinct lithologic units in the sediments. Bacterial and archaeal communities in the surficial sediments are more abundant and diverse, with significantly different compositions from those found deeper in the sediment column. The most abundant taxa are related to chemolithoautotrophs capable of oxidizing reduced nitrogen, sulfur, and iron compounds with oxygen, nitrate, or iron. Concentrations of dissolved methane and total ... |
format |
Text |
author |
Davis, Christina B. Venturelli, Ryan R. Michaud, Alexander M. Hawkings, Jon J. Achberger, Amanda E. Vick-Majors, Trista E. Rosenheim, Brad Dore, John L. Steigmeyer, August D. Benning, Liane G. |
author_facet |
Davis, Christina B. Venturelli, Ryan R. Michaud, Alexander M. Hawkings, Jon J. Achberger, Amanda E. Vick-Majors, Trista E. Rosenheim, Brad Dore, John L. Steigmeyer, August D. Benning, Liane G. |
author_sort |
Davis, Christina B. |
title |
Biogeochemical and historical drivers of microbial community composition and structure in sediments from Mercer Subglacial Lake, West Antarctica ... |
title_short |
Biogeochemical and historical drivers of microbial community composition and structure in sediments from Mercer Subglacial Lake, West Antarctica ... |
title_full |
Biogeochemical and historical drivers of microbial community composition and structure in sediments from Mercer Subglacial Lake, West Antarctica ... |
title_fullStr |
Biogeochemical and historical drivers of microbial community composition and structure in sediments from Mercer Subglacial Lake, West Antarctica ... |
title_full_unstemmed |
Biogeochemical and historical drivers of microbial community composition and structure in sediments from Mercer Subglacial Lake, West Antarctica ... |
title_sort |
biogeochemical and historical drivers of microbial community composition and structure in sediments from mercer subglacial lake, west antarctica ... |
publisher |
Freie Universität Berlin |
publishDate |
2023 |
url |
https://dx.doi.org/10.17169/refubium-40917 https://refubium.fu-berlin.de/handle/fub188/41196 |
long_lat |
ENVELOPE(65.647,65.647,-70.227,-70.227) ENVELOPE(-145.000,-145.000,-84.833,-84.833) |
geographic |
Antarctic Mercer Mercer Ice Stream Ross Ice Shelf West Antarctic Ice Sheet West Antarctica |
geographic_facet |
Antarctic Mercer Mercer Ice Stream Ross Ice Shelf West Antarctic Ice Sheet West Antarctica |
genre |
Antarc* Antarctic Antarctica Ice Sheet Ice Shelf Mercer Ice Stream Ross Ice Shelf West Antarctica |
genre_facet |
Antarc* Antarctic Antarctica Ice Sheet Ice Shelf Mercer Ice Stream Ross Ice Shelf West Antarctica |
op_relation |
https://doi.org/10.1038/s43705-023-00216-w https://dx.doi.org/10.1038/s43705-023-00216-w https://doi.org/10.1038/s43705-023-00216-w |
op_rights |
Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 |
op_doi |
https://doi.org/10.17169/refubium-4091710.1038/s43705-023-00216-w |
_version_ |
1784271991051649024 |