Articles | Volume 22, issue 15
https://doi.org/10.5194/bg-22-3821-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-22-3821-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
07 Aug 2025
Research article |
| 07 Aug 2025
| 07 Aug 2025
Lake anoxia, primary production, and algal community shifts in response to rapid climate changes during the Late Glacial
Oeschger Center for Climate Change Research, Universität Bern, Hochschulstrasse 4, 3012 Bern, Switzerland
Institute of Geography, Universität Bern, Hallerstrasse 12, 3012 Bern, Switzerland
Noé R. M. M. Schmidhauser
Oeschger Center for Climate Change Research, Universität Bern, Hochschulstrasse 4, 3012 Bern, Switzerland
Institute of Geography, Universität Bern, Hallerstrasse 12, 3012 Bern, Switzerland
Martin Grosjean
Oeschger Center for Climate Change Research, Universität Bern, Hochschulstrasse 4, 3012 Bern, Switzerland
Institute of Geography, Universität Bern, Hallerstrasse 12, 3012 Bern, Switzerland
Andrea Lami
Water Research Institute (CRN-IRSA), Unit Verbania, Viale Tonolli 50, 28922 Verbania, Italy
Petra Boltshauser-Kaltenrieder
Oeschger Center for Climate Change Research, Universität Bern, Hochschulstrasse 4, 3012 Bern, Switzerland
Institute of Plant Sciences, Universität Bern, Altenbergrain 21, 2013 Bern, Switzerland
Jacqueline F. N. van Leeuwen
Oeschger Center for Climate Change Research, Universität Bern, Hochschulstrasse 4, 3012 Bern, Switzerland
Institute of Plant Sciences, Universität Bern, Altenbergrain 21, 2013 Bern, Switzerland
Hendrik Vogel
Oeschger Center for Climate Change Research, Universität Bern, Hochschulstrasse 4, 3012 Bern, Switzerland
Institute of Geology, Universität Bern, Baltzerstrasse 1, 3012 Bern, Switzerland
Petra Zahajská
Oeschger Center for Climate Change Research, Universität Bern, Hochschulstrasse 4, 3012 Bern, Switzerland
Institute of Geography, Universität Bern, Hallerstrasse 12, 3012 Bern, Switzerland
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Short summary
Climate warming speeds up lake eutrophication, creating “dead zones” where aquatic life suffocates due to oxygen depletion. The sediments of Amsoldingersee, a Swiss lake, revealed how climate shifts impacted the lake around 10 000–18 000 years ago. (1) Algal composition differed between both cold and warm periods. (2) Nutrient additions from dust controlled algal growth more than temperature. (3) Cold periods with ice cover led to oxygen depletion. (4) Algal communities recovered after anoxic phases.
Climate warming speeds up lake eutrophication, creating “dead zones” where aquatic life...
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