Variations in snow depth modify N-related soil microbial abundances and functioning during winter in subalpine grassland
International audience In alpine and arctic ecosystems, the snowpack has been shown to insulate soils from the winter climatic harshness. Ongoing climate change modifies snowpack quantity and quality, but the consequences of these changes on the soil functioning remain largely unknown. We benefited...
Published in: | Soil Biology and Biochemistry |
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Main Authors: | , , , , , , , , |
Other Authors: | , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2016
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Subjects: | |
Online Access: | https://hal.science/hal-01688390 https://doi.org/10.1016/j.soilbio.2015.09.013 |
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ftutoulouse3hal:oai:HAL:hal-01688390v1 |
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record_format |
openpolar |
institution |
Open Polar |
collection |
Université Toulouse III - Paul Sabatier: HAL-UPS |
op_collection_id |
ftutoulouse3hal |
language |
English |
topic |
Denitrification Microbial functioning Snowpack properties Nitrification Subalpine grassland Microbial abundance [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDV.EE]Life Sciences [q-bio]/Ecology environment [SDV.MP]Life Sciences [q-bio]/Microbiology and Parasitology |
spellingShingle |
Denitrification Microbial functioning Snowpack properties Nitrification Subalpine grassland Microbial abundance [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDV.EE]Life Sciences [q-bio]/Ecology environment [SDV.MP]Life Sciences [q-bio]/Microbiology and Parasitology Jusselme, My-Dung Saccone, Patrick Zinger, Lucie Faure, Mathieu Le Roux, Xavier Guillaumaud, Nadine Bernard, Lionel Clement, Jean-Christophe Poly, Franck Variations in snow depth modify N-related soil microbial abundances and functioning during winter in subalpine grassland |
topic_facet |
Denitrification Microbial functioning Snowpack properties Nitrification Subalpine grassland Microbial abundance [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDV.EE]Life Sciences [q-bio]/Ecology environment [SDV.MP]Life Sciences [q-bio]/Microbiology and Parasitology |
description |
International audience In alpine and arctic ecosystems, the snowpack has been shown to insulate soils from the winter climatic harshness. Ongoing climate change modifies snowpack quantity and quality, but the consequences of these changes on the soil functioning remain largely unknown. We benefited from a subalpine landscape of the French Alps where, 700 years ago, agricultural practices led to the formation of terraces. Subsequently , on each terrace, snow thickness patterns significantly differed between the bank and the front areas inducing strong divergence in their soil microclimatic conditions. Using this framework, we measured abundances and activities of nitrifiers and denitrifiers, together with a set of environmental variables, on three grassland terraces between December and May to test the following hypotheses: (i) soil N-related microbial abundances and activities are sensitive to soil microclimatic variations and differ along the terrace snow depth gradient during winter, (ii) a thicker snowpack favors higher abundances and activities, and (iii) the driving forces for nitrification and denitrification abundances and activities vary along the snow depth gradient. Our results showed significantly and changing N-related microbial activities and abundances during winter despite partly frozen soils, and suggested the selection and/or adaptation of psychrophilic microbial communities. Moreover, activities as well as abundances of ni-trifiers and denitrifiers were significantly higher under a weak or absent snowpack during winter, and mostly related to soil water content and soil surface temperature according to our models. We suggest that strongly variable soil abiotic conditions at the front stations enabled the release of nutrients from soil organic and inorganic compounds favoring psychrophilic bacterial abundances and activities. Contrastingly , a thicker and permanent snowpack maintained circum-zero soil temperatures during winter which limited the microbial community's turnover and release of ... |
author2 |
Laboratoire d'Ecologie Microbienne - UMR 5557 (LEM) Institut National de la Recherche Agronomique (INRA)-Université Claude Bernard Lyon 1 (UCBL) Université de Lyon-Université de Lyon-Ecole Nationale Vétérinaire de Lyon (ENVL)-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-Centre National de la Recherche Scientifique (CNRS) Institut d'écologie et des sciences de l'environnement de Paris (iEES) Institut National de la Recherche Agronomique (INRA)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12)-Centre National de la Recherche Scientifique (CNRS) Laboratoire d'Ecologie Alpine (LECA ) Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes 2016-2019 (UGA 2016-2019 ) University of Oulu Evolution et Diversité Biologique (EDB) Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS) Observatoire des Sciences de l'Univers de Grenoble (OSUG); CNRS-LECA; CNRS-"Zone-Atelier-Alpes" |
format |
Article in Journal/Newspaper |
author |
Jusselme, My-Dung Saccone, Patrick Zinger, Lucie Faure, Mathieu Le Roux, Xavier Guillaumaud, Nadine Bernard, Lionel Clement, Jean-Christophe Poly, Franck |
author_facet |
Jusselme, My-Dung Saccone, Patrick Zinger, Lucie Faure, Mathieu Le Roux, Xavier Guillaumaud, Nadine Bernard, Lionel Clement, Jean-Christophe Poly, Franck |
author_sort |
Jusselme, My-Dung |
title |
Variations in snow depth modify N-related soil microbial abundances and functioning during winter in subalpine grassland |
title_short |
Variations in snow depth modify N-related soil microbial abundances and functioning during winter in subalpine grassland |
title_full |
Variations in snow depth modify N-related soil microbial abundances and functioning during winter in subalpine grassland |
title_fullStr |
Variations in snow depth modify N-related soil microbial abundances and functioning during winter in subalpine grassland |
title_full_unstemmed |
Variations in snow depth modify N-related soil microbial abundances and functioning during winter in subalpine grassland |
title_sort |
variations in snow depth modify n-related soil microbial abundances and functioning during winter in subalpine grassland |
publisher |
HAL CCSD |
publishDate |
2016 |
url |
https://hal.science/hal-01688390 https://doi.org/10.1016/j.soilbio.2015.09.013 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Climate change |
genre_facet |
Arctic Climate change |
op_source |
ISSN: 0038-0717 Soil Biology and Biochemistry https://hal.science/hal-01688390 Soil Biology and Biochemistry, 2016, 92, pp.27-37. ⟨10.1016/j.soilbio.2015.09.013⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.soilbio.2015.09.013 hal-01688390 https://hal.science/hal-01688390 doi:10.1016/j.soilbio.2015.09.013 PRODINRA: 349712 WOS: 000367487700003 |
op_doi |
https://doi.org/10.1016/j.soilbio.2015.09.013 |
container_title |
Soil Biology and Biochemistry |
container_volume |
92 |
container_start_page |
27 |
op_container_end_page |
37 |
_version_ |
1809897069328990208 |
spelling |
ftutoulouse3hal:oai:HAL:hal-01688390v1 2024-09-09T19:27:40+00:00 Variations in snow depth modify N-related soil microbial abundances and functioning during winter in subalpine grassland Jusselme, My-Dung Saccone, Patrick Zinger, Lucie Faure, Mathieu Le Roux, Xavier Guillaumaud, Nadine Bernard, Lionel Clement, Jean-Christophe Poly, Franck Laboratoire d'Ecologie Microbienne - UMR 5557 (LEM) Institut National de la Recherche Agronomique (INRA)-Université Claude Bernard Lyon 1 (UCBL) Université de Lyon-Université de Lyon-Ecole Nationale Vétérinaire de Lyon (ENVL)-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-Centre National de la Recherche Scientifique (CNRS) Institut d'écologie et des sciences de l'environnement de Paris (iEES) Institut National de la Recherche Agronomique (INRA)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12)-Centre National de la Recherche Scientifique (CNRS) Laboratoire d'Ecologie Alpine (LECA ) Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes 2016-2019 (UGA 2016-2019 ) University of Oulu Evolution et Diversité Biologique (EDB) Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS) Observatoire des Sciences de l'Univers de Grenoble (OSUG); CNRS-LECA; CNRS-"Zone-Atelier-Alpes" 2016 https://hal.science/hal-01688390 https://doi.org/10.1016/j.soilbio.2015.09.013 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.soilbio.2015.09.013 hal-01688390 https://hal.science/hal-01688390 doi:10.1016/j.soilbio.2015.09.013 PRODINRA: 349712 WOS: 000367487700003 ISSN: 0038-0717 Soil Biology and Biochemistry https://hal.science/hal-01688390 Soil Biology and Biochemistry, 2016, 92, pp.27-37. ⟨10.1016/j.soilbio.2015.09.013⟩ Denitrification Microbial functioning Snowpack properties Nitrification Subalpine grassland Microbial abundance [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDV.EE]Life Sciences [q-bio]/Ecology environment [SDV.MP]Life Sciences [q-bio]/Microbiology and Parasitology info:eu-repo/semantics/article Journal articles 2016 ftutoulouse3hal https://doi.org/10.1016/j.soilbio.2015.09.013 2024-06-17T23:55:55Z International audience In alpine and arctic ecosystems, the snowpack has been shown to insulate soils from the winter climatic harshness. Ongoing climate change modifies snowpack quantity and quality, but the consequences of these changes on the soil functioning remain largely unknown. We benefited from a subalpine landscape of the French Alps where, 700 years ago, agricultural practices led to the formation of terraces. Subsequently , on each terrace, snow thickness patterns significantly differed between the bank and the front areas inducing strong divergence in their soil microclimatic conditions. Using this framework, we measured abundances and activities of nitrifiers and denitrifiers, together with a set of environmental variables, on three grassland terraces between December and May to test the following hypotheses: (i) soil N-related microbial abundances and activities are sensitive to soil microclimatic variations and differ along the terrace snow depth gradient during winter, (ii) a thicker snowpack favors higher abundances and activities, and (iii) the driving forces for nitrification and denitrification abundances and activities vary along the snow depth gradient. Our results showed significantly and changing N-related microbial activities and abundances during winter despite partly frozen soils, and suggested the selection and/or adaptation of psychrophilic microbial communities. Moreover, activities as well as abundances of ni-trifiers and denitrifiers were significantly higher under a weak or absent snowpack during winter, and mostly related to soil water content and soil surface temperature according to our models. We suggest that strongly variable soil abiotic conditions at the front stations enabled the release of nutrients from soil organic and inorganic compounds favoring psychrophilic bacterial abundances and activities. Contrastingly , a thicker and permanent snowpack maintained circum-zero soil temperatures during winter which limited the microbial community's turnover and release of ... Article in Journal/Newspaper Arctic Climate change Université Toulouse III - Paul Sabatier: HAL-UPS Arctic Soil Biology and Biochemistry 92 27 37 |