River and Groundwater Microbiomes
Subsurface microbial communities establish over relatively long periods and are comparatively stable. Therefore, transient variations or permanent shifts in subsurface microbial communities provide insights into physical processes or disturbances. Online flow cytometry (FCM), which enables real-time analysis of total cell counts and cytometric fingerprints of microbial communities, offers new opportunities to shed light on the interrelation between changes in subsurface microbial communities and groundwater flow and mixing dynamics. This dataset of 16S rRNA gene amplicon data complements the online FCM and hydrochemical data, and provides insight into the bacterial and archaeal microbiome structures in shallow and deep aquifers, fractured deep volcanic aquifers, karst aquifers, shallow alluvial aquifers as well as river water samples.