ArticleFrontiers in microbiology2026
Depth drives microbial assembly while localized tourism selectively enriches bacterial indicator taxa in Lake Fuxian, China.
Article in Frontiers in microbiology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Introduction: Microbial communities play crucial roles in maintaining lake ecosystem stability. In this study, high throughput 16S rRNA gene sequencing combined with diversity and multivariate statistical analyses was used to investigate how anthropogenic activities, particularly tourism, influence the vertical distribution and composition of bacterial and archaeal communities in Lake Fuxian, a deep oligotrophic freshwater lake in southwestern China. Methods: A total of 26 bacterial and 3 archaeal phyla were identified, among which Proteobacteria (20.12-32.80%) and Cyanobacteria (17.08-30.39%) dominated the bacterial communities, while Thaumarchaeota (73.29-99.90%) dominated the archaeal ones. Bacterial The analysis and results: Clustering, NMDS and redundancy analysis (RDA) revealed that depth established the primary ecological scaffolding for both bacterial and archaeal communities. However, tourism drove a localized, taxon-specific restructuring of bacterial communities in the upper layers, while archaeal communities were highly resistant to horizontal spatial disturbances overall. LEfSe analysis showed that Discussion: These findings highlight that tourism-related disturbance may alter upper-layer bacterial community composition in deep oligotrophic lakes and provide a critical theoretical basis for evaluating the micro-ecological risks of anthropogenic disturbances, guiding the sustainable tourism development and environmental management of deep plateau lakes.
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