Biogeosciences
Biogeosciences
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Articles | Volume 23, issue 14
Articles | Volume 23, issue 14
https://doi.org/10.5194/bg-23-5185-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-23-5185-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 23, issue 14
Research article
 | 
30 Jul 2026
Research article |  | 30 Jul 2026

Tracking centennial changes in algal community composition and biomass using subfossil pigments in a high mountain lake (Sierra Nevada, Spain)

Joana Llodrà-Llabrés, Carmen Pérez-Martínez, Teresa Vegas-Vilarrúbia, John P. Smol, Carsten Meyer-Jacob, Javier Sigro, and Teresa Buchaca

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Short summary
This study examined changes in algae in a high mountain lake in Spain over the past 430 years by analyzing subfossil pigments. We found that algal biomass and composition shifted significantly, especially since the 1970s, mainly due to rising temperatures and phosphorus-rich dust from the Sahara. These findings reveal how climate change and atmospheric pollution impact even remote lakes, highlighting risks for similar ecosystems under future environmental changes.
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