ArticleProceedings of the National Academy of Sciences of the United States of America2025
Resilience of deep aquifer microbial communities to seasonal hydrological fluctuations.
Article in Proceedings of the National Academy of Sciences of the United States of America, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
4 citing papers in PubMed.
- On-site dissolved-gas analysis and electric-resistivity tomography as new tools to trace COScientific reports · 2026Article
- Groundwater Microbial Diversity Associated With Icelandic Basaltic Subsurface Environments.Environmental microbiology reports · 2025Article
- Seismic shifts in the geochemical and microbial composition of a Yellowstone aquifer.PNAS nexus · 2025Article
- Resilience of deep aquifer microbial communities to seasonal hydrological fluctuations.Proceedings of the National Academy of Sciences of the United States of America · 2025Article
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Authors and funding
5 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The influence of seasonal variations in temperature and precipitation on subsurface biogeochemical processes remains poorly understood. In the Lavey-les-Bains thermal system in the Swiss Alps, annual variations in electrical conductivity are observed to depths of 500 m, suggesting a potential link to surface environmental changes. Here we show, through year-round analyses of stable water isotopes, noble gases, and conductivity, that seasonally varying contributions of shallow groundwater from the Rhône alluvial aquifer mix with deep groundwater. Despite vertically similar fluid geochemical compositions suggesting high hydrological connectivity, microbial communities exhibit significant depth-dependent variation with minimal seasonal change. This decoupling of dynamic water source partitioning and stable microbial community structure has not been previously observed and fills a critical gap in our understanding of geothermal systems and microbial life in the deep subsurface. At 200 m, the communities are dominated by sulfur-disproportionating Bacteria (
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