Biogeosciences
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Articles | Volume 23, issue 14
Articles | Volume 23, issue 14
https://doi.org/10.5194/bg-23-5281-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-23-5281-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 23, issue 14
Research article
 | 
31 Jul 2026
Research article |  | 31 Jul 2026

A high-resolution perspective on climate drivers of lake stratification and phototrophic community dynamics in Late Glacial Central Europe

Petra Zahajská, María Luján García, Stella Birlo, Andrea Lami, Martina Stebich, Stan J. Schouten, Noé R. M. M. Schmidhauser, Bernd Zolitschka, Hendrik Vogel, and Martin Grosjean

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Short summary
We analyzed sediments from Holzmaar using hyperspectral imaging and geochemistry to track ecosystem responses to rapid warming. We found that while rising temperatures enabled stratification, forest expansion was the decisive trigger for deep-water anoxia by shielding the lake from wind. Holzmaar’s iron-rich geology prevented internal nutrient recycling, allowing immediate recovery once the climate cooled. This proves catchment traits and lithology can override direct climate impacts.
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