Treeline displacement may affect lake dissolved organic matter processing at high latitudes and altitudes

International audience Abstract Climate change induced shifts in treeline position, both towards higher altitudes and latitudes induce changes in soil organic matter. Eventually, soil organic matter is transported to alpine and subarctic lakes with yet unknown consequences for dissolved organic matt...

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Published in:Nature Communications
Main Authors: Catalán, Núria, Rofner, Carina, Verpoorter, Charles, Pérez, María Teresa, Dittmar, Thorsten, Tranvik, Lars, Sommaruga, Ruben, Peter, Hannes
Other Authors: Lake and Glacier Ecology Research Group, Department of Ecology, Universität Innsbruck, Innsbruck, Austria, University Littoral Côte d’Opale, Centre National de la Recherche Scientifique (CNRS), Université Lille, IRD, UMR -LOG-Laboratoire d’Océanologie et de Géosciences, F-Wimereux, France, Lake and Glacier Ecology Research Group, Department of Ecology, Universität Innsbruck, Innsbruck, Austria., Institute for Chemistry and Biology of the Marine Environment (ICBM), Carl von Ossietzky Universität Oldenburg, Oldenburg, Germany, Limnology, Department of Ecology and Genetics, University of Uppsala, Uppsala, Sweden
Format: Article in Journal/Newspaper
Language:English
Published: HAL CCSD 2024
Subjects:
Online Access:https://hal.science/hal-04526284
https://hal.science/hal-04526284/document
https://hal.science/hal-04526284/file/s41467-024-46789-5.pdf
https://doi.org/10.1038/s41467-024-46789-5
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spelling ftinsu:oai:HAL:hal-04526284v1 2024-04-28T08:39:57+00:00 Treeline displacement may affect lake dissolved organic matter processing at high latitudes and altitudes Catalán, Núria Rofner, Carina Verpoorter, Charles Pérez, María Teresa Dittmar, Thorsten Tranvik, Lars Sommaruga, Ruben Peter, Hannes Lake and Glacier Ecology Research Group, Department of Ecology, Universität Innsbruck, Innsbruck, Austria University Littoral Côte d’Opale, Centre National de la Recherche Scientifique (CNRS), Université Lille, IRD, UMR -LOG-Laboratoire d’Océanologie et de Géosciences, F-Wimereux, France Lake and Glacier Ecology Research Group, Department of Ecology, Universität Innsbruck, Innsbruck, Austria. Institute for Chemistry and Biology of the Marine Environment (ICBM), Carl von Ossietzky Universität Oldenburg, Oldenburg, Germany Limnology, Department of Ecology and Genetics, University of Uppsala, Uppsala, Sweden 2024-03-26 https://hal.science/hal-04526284 https://hal.science/hal-04526284/document https://hal.science/hal-04526284/file/s41467-024-46789-5.pdf https://doi.org/10.1038/s41467-024-46789-5 en eng HAL CCSD Nature Publishing Group info:eu-repo/semantics/altIdentifier/doi/10.1038/s41467-024-46789-5 hal-04526284 https://hal.science/hal-04526284 https://hal.science/hal-04526284/document https://hal.science/hal-04526284/file/s41467-024-46789-5.pdf doi:10.1038/s41467-024-46789-5 http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess ISSN: 2041-1723 EISSN: 2041-1723 Nature Communications https://hal.science/hal-04526284 Nature Communications, 2024, 15 (1), pp.2640. ⟨10.1038/s41467-024-46789-5⟩ [SDU]Sciences of the Universe [physics] info:eu-repo/semantics/article Journal articles 2024 ftinsu https://doi.org/10.1038/s41467-024-46789-5 2024-04-05T00:26:21Z International audience Abstract Climate change induced shifts in treeline position, both towards higher altitudes and latitudes induce changes in soil organic matter. Eventually, soil organic matter is transported to alpine and subarctic lakes with yet unknown consequences for dissolved organic matter (DOM) diversity and processing. Here, we experimentally investigate the consequences of treeline shifts by amending subarctic and temperate alpine lake water with soil-derived DOM from above and below the treeline. We use ultra-high resolution mass spectrometry (FT-ICR MS) to track molecular DOM diversity (i.e., chemodiversity), estimate DOM decay and measure bacterial growth efficiency. In both lakes, soil-derived DOM from below the treeline increases lake DOM chemodiversity mainly through the enrichment with polyphenolic and highly unsaturated compounds. These compositional changes are associated with reductions in bulk and compound-level DOM reactivity and reduced bacterial growth efficiency. Our results suggest that treeline advancement has the potential to enrich a large number of lake ecosystems with less biodegradable DOM, affecting bacterial community function and potentially altering the biogeochemical cycling of carbon in lakes at high latitudes and altitudes. Article in Journal/Newspaper Subarctic Institut national des sciences de l'Univers: HAL-INSU Nature Communications 15 1
institution Open Polar
collection Institut national des sciences de l'Univers: HAL-INSU
op_collection_id ftinsu
language English
topic [SDU]Sciences of the Universe [physics]
spellingShingle [SDU]Sciences of the Universe [physics]
Catalán, Núria
Rofner, Carina
Verpoorter, Charles
Pérez, María Teresa
Dittmar, Thorsten
Tranvik, Lars
Sommaruga, Ruben
Peter, Hannes
Treeline displacement may affect lake dissolved organic matter processing at high latitudes and altitudes
topic_facet [SDU]Sciences of the Universe [physics]
description International audience Abstract Climate change induced shifts in treeline position, both towards higher altitudes and latitudes induce changes in soil organic matter. Eventually, soil organic matter is transported to alpine and subarctic lakes with yet unknown consequences for dissolved organic matter (DOM) diversity and processing. Here, we experimentally investigate the consequences of treeline shifts by amending subarctic and temperate alpine lake water with soil-derived DOM from above and below the treeline. We use ultra-high resolution mass spectrometry (FT-ICR MS) to track molecular DOM diversity (i.e., chemodiversity), estimate DOM decay and measure bacterial growth efficiency. In both lakes, soil-derived DOM from below the treeline increases lake DOM chemodiversity mainly through the enrichment with polyphenolic and highly unsaturated compounds. These compositional changes are associated with reductions in bulk and compound-level DOM reactivity and reduced bacterial growth efficiency. Our results suggest that treeline advancement has the potential to enrich a large number of lake ecosystems with less biodegradable DOM, affecting bacterial community function and potentially altering the biogeochemical cycling of carbon in lakes at high latitudes and altitudes.
author2 Lake and Glacier Ecology Research Group, Department of Ecology, Universität Innsbruck, Innsbruck, Austria
University Littoral Côte d’Opale, Centre National de la Recherche Scientifique (CNRS), Université Lille, IRD, UMR -LOG-Laboratoire d’Océanologie et de Géosciences, F-Wimereux, France
Lake and Glacier Ecology Research Group, Department of Ecology, Universität Innsbruck, Innsbruck, Austria.
Institute for Chemistry and Biology of the Marine Environment (ICBM), Carl von Ossietzky Universität Oldenburg, Oldenburg, Germany
Limnology, Department of Ecology and Genetics, University of Uppsala, Uppsala, Sweden
format Article in Journal/Newspaper
author Catalán, Núria
Rofner, Carina
Verpoorter, Charles
Pérez, María Teresa
Dittmar, Thorsten
Tranvik, Lars
Sommaruga, Ruben
Peter, Hannes
author_facet Catalán, Núria
Rofner, Carina
Verpoorter, Charles
Pérez, María Teresa
Dittmar, Thorsten
Tranvik, Lars
Sommaruga, Ruben
Peter, Hannes
author_sort Catalán, Núria
title Treeline displacement may affect lake dissolved organic matter processing at high latitudes and altitudes
title_short Treeline displacement may affect lake dissolved organic matter processing at high latitudes and altitudes
title_full Treeline displacement may affect lake dissolved organic matter processing at high latitudes and altitudes
title_fullStr Treeline displacement may affect lake dissolved organic matter processing at high latitudes and altitudes
title_full_unstemmed Treeline displacement may affect lake dissolved organic matter processing at high latitudes and altitudes
title_sort treeline displacement may affect lake dissolved organic matter processing at high latitudes and altitudes
publisher HAL CCSD
publishDate 2024
url https://hal.science/hal-04526284
https://hal.science/hal-04526284/document
https://hal.science/hal-04526284/file/s41467-024-46789-5.pdf
https://doi.org/10.1038/s41467-024-46789-5
genre Subarctic
genre_facet Subarctic
op_source ISSN: 2041-1723
EISSN: 2041-1723
Nature Communications
https://hal.science/hal-04526284
Nature Communications, 2024, 15 (1), pp.2640. ⟨10.1038/s41467-024-46789-5⟩
op_relation info:eu-repo/semantics/altIdentifier/doi/10.1038/s41467-024-46789-5
hal-04526284
https://hal.science/hal-04526284
https://hal.science/hal-04526284/document
https://hal.science/hal-04526284/file/s41467-024-46789-5.pdf
doi:10.1038/s41467-024-46789-5
op_rights http://creativecommons.org/licenses/by/
info:eu-repo/semantics/OpenAccess
op_doi https://doi.org/10.1038/s41467-024-46789-5
container_title Nature Communications
container_volume 15
container_issue 1
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