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- W2790335519 endingPage "e0194663" @default.
- W2790335519 startingPage "e0194663" @default.
- W2790335519 abstract "Using in-field bioreactors, we investigated the influence of exogenous microorganisms in groundwater planktonic and biofilm microbial communities as part of the Integrated Field Research Challenge (IFRC). After an acclimation period with source groundwater, bioreactors received either filtered (0.22 μM filter) or unfiltered well groundwater in triplicate and communities were tracked routinely for 23 days after filtration was initiated. To address geochemical influences, the planktonic phase was assayed periodically for protein, organic acids, physico-/geochemical measurements and bacterial community (via 16S rRNA gene sequencing), while biofilms (i.e. microbial growth on sediment coupons) were targeted for bacterial community composition at the completion of the experiment (23 d). Based on Bray-Curtis distance, planktonic bacterial community composition varied temporally and between treatments (filtered, unfiltered bioreactors). Notably, filtration led to an increase in the dominant genus, Zoogloea relative abundance over time within the planktonic community, while remaining relatively constant when unfiltered. At day 23, biofilm communities were more taxonomically and phylogenetically diverse and substantially different from planktonic bacterial communities; however, the biofilm bacterial communities were similar regardless of filtration. These results suggest that although planktonic communities were sensitive to groundwater filtration, bacterial biofilm communities were stable and resistant to filtration. Bioreactors are useful tools in addressing questions pertaining to microbial community assembly and succession. These data provide a first step in understanding how an extrinsic factor, such as a groundwater inoculation and flux of microbial colonizers, impact how microbial communities assemble in environmental systems." @default.
- W2790335519 created "2018-03-29" @default.
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- W2790335519 date "2018-03-20" @default.
- W2790335519 modified "2023-10-12" @default.
- W2790335519 title "Use of in-field bioreactors demonstrate groundwater filtration influences planktonic bacterial community assembly, but not biofilm composition" @default.
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- W2790335519 doi "https://doi.org/10.1371/journal.pone.0194663" @default.
- W2790335519 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/5860781" @default.
- W2790335519 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/29558522" @default.
- W2790335519 hasPublicationYear "2018" @default.
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