Over Winter Microbial Processes in a Svalbard Snow Pack: An Experimental Approach
International audience Snow packs cover large expanses of Earth’s land surface, making them integral components of the cryosphere in terms of past climate and atmospheric proxies, surface albedo regulators, insulators for other Arctic environments and habitats for diverse microbial communities such...
Published in: | Frontiers in Microbiology |
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Main Authors: | , , , , , , , |
Other Authors: | , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2020
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Subjects: | |
Online Access: | https://hal.science/hal-03080265 https://hal.science/hal-03080265/document https://hal.science/hal-03080265/file/fmicb-11-01029.pdf https://doi.org/10.3389/fmicb.2020.01029 |
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ftunivlyon:oai:HAL:hal-03080265v1 |
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openpolar |
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Open Polar |
collection |
Université de Lyon: HAL |
op_collection_id |
ftunivlyon |
language |
English |
topic |
snow pack polar winter particulate phosphorus heterotrophic bacteria nutrient addition [SDV]Life Sciences [q-bio] [SDE]Environmental Sciences |
spellingShingle |
snow pack polar winter particulate phosphorus heterotrophic bacteria nutrient addition [SDV]Life Sciences [q-bio] [SDE]Environmental Sciences Holland, Alexandra Bergk Pinto, Benoît Layton, Rose Williamson, Christopher Anesio, Alexandre Vogel, Timothy Larose, Catherine Tranter, Martyn Over Winter Microbial Processes in a Svalbard Snow Pack: An Experimental Approach |
topic_facet |
snow pack polar winter particulate phosphorus heterotrophic bacteria nutrient addition [SDV]Life Sciences [q-bio] [SDE]Environmental Sciences |
description |
International audience Snow packs cover large expanses of Earth’s land surface, making them integral components of the cryosphere in terms of past climate and atmospheric proxies, surface albedo regulators, insulators for other Arctic environments and habitats for diverse microbial communities such as algae, bacteria and fungi. Yet, most of our current understanding of snow pack environments, specifically microbial activity and community interaction, is limited to the main microbial growing season during spring ablation. At present, little is known about microbial activity and its influence on nutrient cycling during the subfreezing temperatures and 24-h darkness of the polar winter. Here, we examined microbial dynamics in a simulated cold (−5°C), dark snow pack to determine polar winter season microbial activity and its dependence on critical nutrients. Snow collected from Ny-Ålesund, Svalbard was incubated in the dark over a 5-week period with four different nutrient additions, including glacial mineral particles, dissolved inorganic nitrogen (DIN), dissolved inorganic phosphorus (DIP) and a combined treatment of DIN plus DIP. Data indicate a consumption of dissolved inorganic nutrients, particularly DIN, by heterotrophic communities, suggesting a potential nitrogen limitation, contradictory to phosphorus limitations found in most aquatic environments. 16S amplicon sequencing also reveal a clear difference in microbial community composition in the particulate mineral treatment compared to dissolved nutrient treatments and controls, suggesting that certain species of heterotrophs living within the snow pack are more likely to associate with particulates. Particulate phosphorus analyses indicate a potential ability of heterotrophic communities to access particulate sources of phosphorous, possibly explaining the lack of phosphorus limitation. These findings have importance for understanding microbial activity during the polar winter season and its potential influences on the abundance and bioavailability of ... |
author2 |
Bristol Glaciology Centre School of Geographical Sciences Ampère, Département Bioingénierie (BioIng) Ampère (AMPERE) École Centrale de Lyon (ECL) Université de Lyon-Université de Lyon-Université Claude Bernard Lyon 1 (UCBL) Université de Lyon-Institut National des Sciences Appliquées de Lyon (INSA Lyon) Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-École Centrale de Lyon (ECL) Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) Enoveo Srl Partenaires INRAE Aarhus University Aarhus |
format |
Article in Journal/Newspaper |
author |
Holland, Alexandra Bergk Pinto, Benoît Layton, Rose Williamson, Christopher Anesio, Alexandre Vogel, Timothy Larose, Catherine Tranter, Martyn |
author_facet |
Holland, Alexandra Bergk Pinto, Benoît Layton, Rose Williamson, Christopher Anesio, Alexandre Vogel, Timothy Larose, Catherine Tranter, Martyn |
author_sort |
Holland, Alexandra |
title |
Over Winter Microbial Processes in a Svalbard Snow Pack: An Experimental Approach |
title_short |
Over Winter Microbial Processes in a Svalbard Snow Pack: An Experimental Approach |
title_full |
Over Winter Microbial Processes in a Svalbard Snow Pack: An Experimental Approach |
title_fullStr |
Over Winter Microbial Processes in a Svalbard Snow Pack: An Experimental Approach |
title_full_unstemmed |
Over Winter Microbial Processes in a Svalbard Snow Pack: An Experimental Approach |
title_sort |
over winter microbial processes in a svalbard snow pack: an experimental approach |
publisher |
HAL CCSD |
publishDate |
2020 |
url |
https://hal.science/hal-03080265 https://hal.science/hal-03080265/document https://hal.science/hal-03080265/file/fmicb-11-01029.pdf https://doi.org/10.3389/fmicb.2020.01029 |
geographic |
Arctic Svalbard Ny-Ålesund |
geographic_facet |
Arctic Svalbard Ny-Ålesund |
genre |
albedo Arctic Ny Ålesund Ny-Ålesund Svalbard |
genre_facet |
albedo Arctic Ny Ålesund Ny-Ålesund Svalbard |
op_source |
ISSN: 1664-302X EISSN: 1664-302X Frontiers in Microbiology https://hal.science/hal-03080265 Frontiers in Microbiology, 2020, 11, ⟨10.3389/fmicb.2020.01029⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.3389/fmicb.2020.01029 hal-03080265 https://hal.science/hal-03080265 https://hal.science/hal-03080265/document https://hal.science/hal-03080265/file/fmicb-11-01029.pdf doi:10.3389/fmicb.2020.01029 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.3389/fmicb.2020.01029 |
container_title |
Frontiers in Microbiology |
container_volume |
11 |
_version_ |
1768378106845855744 |
spelling |
ftunivlyon:oai:HAL:hal-03080265v1 2023-06-11T04:03:16+02:00 Over Winter Microbial Processes in a Svalbard Snow Pack: An Experimental Approach Holland, Alexandra Bergk Pinto, Benoît Layton, Rose Williamson, Christopher Anesio, Alexandre Vogel, Timothy Larose, Catherine Tranter, Martyn Bristol Glaciology Centre School of Geographical Sciences Ampère, Département Bioingénierie (BioIng) Ampère (AMPERE) École Centrale de Lyon (ECL) Université de Lyon-Université de Lyon-Université Claude Bernard Lyon 1 (UCBL) Université de Lyon-Institut National des Sciences Appliquées de Lyon (INSA Lyon) Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-École Centrale de Lyon (ECL) Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) Enoveo Srl Partenaires INRAE Aarhus University Aarhus 2020-05-29 https://hal.science/hal-03080265 https://hal.science/hal-03080265/document https://hal.science/hal-03080265/file/fmicb-11-01029.pdf https://doi.org/10.3389/fmicb.2020.01029 en eng HAL CCSD Frontiers Media info:eu-repo/semantics/altIdentifier/doi/10.3389/fmicb.2020.01029 hal-03080265 https://hal.science/hal-03080265 https://hal.science/hal-03080265/document https://hal.science/hal-03080265/file/fmicb-11-01029.pdf doi:10.3389/fmicb.2020.01029 info:eu-repo/semantics/OpenAccess ISSN: 1664-302X EISSN: 1664-302X Frontiers in Microbiology https://hal.science/hal-03080265 Frontiers in Microbiology, 2020, 11, ⟨10.3389/fmicb.2020.01029⟩ snow pack polar winter particulate phosphorus heterotrophic bacteria nutrient addition [SDV]Life Sciences [q-bio] [SDE]Environmental Sciences info:eu-repo/semantics/article Journal articles 2020 ftunivlyon https://doi.org/10.3389/fmicb.2020.01029 2023-04-25T23:55:16Z International audience Snow packs cover large expanses of Earth’s land surface, making them integral components of the cryosphere in terms of past climate and atmospheric proxies, surface albedo regulators, insulators for other Arctic environments and habitats for diverse microbial communities such as algae, bacteria and fungi. Yet, most of our current understanding of snow pack environments, specifically microbial activity and community interaction, is limited to the main microbial growing season during spring ablation. At present, little is known about microbial activity and its influence on nutrient cycling during the subfreezing temperatures and 24-h darkness of the polar winter. Here, we examined microbial dynamics in a simulated cold (−5°C), dark snow pack to determine polar winter season microbial activity and its dependence on critical nutrients. Snow collected from Ny-Ålesund, Svalbard was incubated in the dark over a 5-week period with four different nutrient additions, including glacial mineral particles, dissolved inorganic nitrogen (DIN), dissolved inorganic phosphorus (DIP) and a combined treatment of DIN plus DIP. Data indicate a consumption of dissolved inorganic nutrients, particularly DIN, by heterotrophic communities, suggesting a potential nitrogen limitation, contradictory to phosphorus limitations found in most aquatic environments. 16S amplicon sequencing also reveal a clear difference in microbial community composition in the particulate mineral treatment compared to dissolved nutrient treatments and controls, suggesting that certain species of heterotrophs living within the snow pack are more likely to associate with particulates. Particulate phosphorus analyses indicate a potential ability of heterotrophic communities to access particulate sources of phosphorous, possibly explaining the lack of phosphorus limitation. These findings have importance for understanding microbial activity during the polar winter season and its potential influences on the abundance and bioavailability of ... Article in Journal/Newspaper albedo Arctic Ny Ålesund Ny-Ålesund Svalbard Université de Lyon: HAL Arctic Svalbard Ny-Ålesund Frontiers in Microbiology 11 |