Phylogenetically and functionally diverse microorganisms reside under the Ross Ice Shelf
Throughout coastal Antarctica, ice shelves separate oceanic waters from sunlight by hundreds of meters of ice. Historical studies have detected activity of nitrifying microorganisms in oceanic cavities below permanent ice shelves. However, little is known about the microbial composition and pathways...
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ftethz:oai:www.research-collection.ethz.ch:20.500.11850/527662 2023-08-20T04:02:29+02:00 Phylogenetically and functionally diverse microorganisms reside under the Ross Ice Shelf Martínez-Pérez, Clara Greening, Chris Bay, Sean K. Lappan, Rachael J. Zhao, Zhiao De Corte, Daniele Hulbe, Christina Ohneiser, Christian Stevens, Craig Thomson, Blair Stepanauskas, Ramunas González, José M. Logares, Ramiro Morales, Sergio E. Baltar, Federico 2022 application/application/pdf https://hdl.handle.net/20.500.11850/527662 https://doi.org/10.3929/ethz-b-000527662 en eng Nature info:eu-repo/semantics/altIdentifier/doi/10.1038/s41467-021-27769-5 http://hdl.handle.net/20.500.11850/527662 doi:10.3929/ethz-b-000527662 info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/4.0/ Creative Commons Attribution 4.0 International Nature Communications, 13 (1) info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2022 ftethz https://doi.org/20.500.11850/52766210.3929/ethz-b-00052766210.1038/s41467-021-27769-5 2023-07-30T23:54:34Z Throughout coastal Antarctica, ice shelves separate oceanic waters from sunlight by hundreds of meters of ice. Historical studies have detected activity of nitrifying microorganisms in oceanic cavities below permanent ice shelves. However, little is known about the microbial composition and pathways that mediate these activities. In this study, we profiled the microbial communities beneath the Ross Ice Shelf using a multi-omics approach. Overall, beneath-shelf microorganisms are of comparable abundance and diversity, though distinct composition, relative to those in the open meso- and bathypelagic ocean. Production of new organic carbon is likely driven by aerobic lithoautotrophic archaea and bacteria that can use ammonium, nitrite, and sulfur compounds as electron donors. Also enriched were aerobic organoheterotrophic bacteria capable of degrading complex organic carbon substrates, likely derived from in situ fixed carbon and potentially refractory organic matter laterally advected by the below-shelf waters. Altogether, these findings uncover a taxonomically distinct microbial community potentially adapted to a highly oligotrophic marine environment and suggest that ocean cavity waters are primarily chemosynthetically-driven systems. ISSN:2041-1723 Article in Journal/Newspaper Antarc* Antarctica Ice Shelf Ice Shelves Ross Ice Shelf ETH Zürich Research Collection Ross Ice Shelf |
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ETH Zürich Research Collection |
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language |
English |
description |
Throughout coastal Antarctica, ice shelves separate oceanic waters from sunlight by hundreds of meters of ice. Historical studies have detected activity of nitrifying microorganisms in oceanic cavities below permanent ice shelves. However, little is known about the microbial composition and pathways that mediate these activities. In this study, we profiled the microbial communities beneath the Ross Ice Shelf using a multi-omics approach. Overall, beneath-shelf microorganisms are of comparable abundance and diversity, though distinct composition, relative to those in the open meso- and bathypelagic ocean. Production of new organic carbon is likely driven by aerobic lithoautotrophic archaea and bacteria that can use ammonium, nitrite, and sulfur compounds as electron donors. Also enriched were aerobic organoheterotrophic bacteria capable of degrading complex organic carbon substrates, likely derived from in situ fixed carbon and potentially refractory organic matter laterally advected by the below-shelf waters. Altogether, these findings uncover a taxonomically distinct microbial community potentially adapted to a highly oligotrophic marine environment and suggest that ocean cavity waters are primarily chemosynthetically-driven systems. ISSN:2041-1723 |
format |
Article in Journal/Newspaper |
author |
Martínez-Pérez, Clara Greening, Chris Bay, Sean K. Lappan, Rachael J. Zhao, Zhiao De Corte, Daniele Hulbe, Christina Ohneiser, Christian Stevens, Craig Thomson, Blair Stepanauskas, Ramunas González, José M. Logares, Ramiro Morales, Sergio E. Baltar, Federico |
spellingShingle |
Martínez-Pérez, Clara Greening, Chris Bay, Sean K. Lappan, Rachael J. Zhao, Zhiao De Corte, Daniele Hulbe, Christina Ohneiser, Christian Stevens, Craig Thomson, Blair Stepanauskas, Ramunas González, José M. Logares, Ramiro Morales, Sergio E. Baltar, Federico Phylogenetically and functionally diverse microorganisms reside under the Ross Ice Shelf |
author_facet |
Martínez-Pérez, Clara Greening, Chris Bay, Sean K. Lappan, Rachael J. Zhao, Zhiao De Corte, Daniele Hulbe, Christina Ohneiser, Christian Stevens, Craig Thomson, Blair Stepanauskas, Ramunas González, José M. Logares, Ramiro Morales, Sergio E. Baltar, Federico |
author_sort |
Martínez-Pérez, Clara |
title |
Phylogenetically and functionally diverse microorganisms reside under the Ross Ice Shelf |
title_short |
Phylogenetically and functionally diverse microorganisms reside under the Ross Ice Shelf |
title_full |
Phylogenetically and functionally diverse microorganisms reside under the Ross Ice Shelf |
title_fullStr |
Phylogenetically and functionally diverse microorganisms reside under the Ross Ice Shelf |
title_full_unstemmed |
Phylogenetically and functionally diverse microorganisms reside under the Ross Ice Shelf |
title_sort |
phylogenetically and functionally diverse microorganisms reside under the ross ice shelf |
publisher |
Nature |
publishDate |
2022 |
url |
https://hdl.handle.net/20.500.11850/527662 https://doi.org/10.3929/ethz-b-000527662 |
geographic |
Ross Ice Shelf |
geographic_facet |
Ross Ice Shelf |
genre |
Antarc* Antarctica Ice Shelf Ice Shelves Ross Ice Shelf |
genre_facet |
Antarc* Antarctica Ice Shelf Ice Shelves Ross Ice Shelf |
op_source |
Nature Communications, 13 (1) |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1038/s41467-021-27769-5 http://hdl.handle.net/20.500.11850/527662 doi:10.3929/ethz-b-000527662 |
op_rights |
info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/4.0/ Creative Commons Attribution 4.0 International |
op_doi |
https://doi.org/20.500.11850/52766210.3929/ethz-b-00052766210.1038/s41467-021-27769-5 |
_version_ |
1774712952216092672 |