In-field bioreactors demonstrate dynamic shifts in microbial communities in response to geochemical perturbations.

ABSTRACT: Subsurface microbial communities mediate the transformation and fate of redox sensitive materials including organic matter, metals and radionuclides. Few studies have explored how changing geochemical conditions influence the composition of groundwater microbial communities over time. We temporally monitored alterations in abiotic forces on microbial community structure using 1L in-field bioreactors receiving background and contaminated groundwater at the Oak Ridge Reservation, TN. Planktonic and biofilm microbial communities were initialized with background water for 4 days to establish communities in triplicate control reactors and triplicate test reactors and then fed filtered water for 14 days. On day 18, three reactors were switched to receive filtered groundwater from a contaminated

SUBMITTER: Wilpiszeski RL 

PROVIDER: S-EPMC7521895 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature