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- W2971365877 abstract "Abstract Waters draining from flooded and abandoned coal mines in the South Wales Coalfield (SWC), are substantial sources of pollution to the environment characterized by circumneutral pH and elevated dissolved iron concentrations (>1 mg L−1). The discharged Fe precipitates to form Fe(III) (oxyhydr)oxides which sustain microbial communities. However, while several studies have investigated the geochemistry of mine drainage in the SWC, less is known about the microbial ecology of the sites presenting a gap in our understanding of biogeochemical cycling and pollutant turnover. This study investigated the biogeochemistry of the Ynysarwed mine adit in the SWC. Samples were collected from nine locations within sediment at the mine entrance from the upper and lower layers three times over one year for geochemical and bacterial 16S rRNA gene sequence analysis. During winter, members of the Betaproteobacteria bloomed in relative abundance (>40%) including the microaerophilic Fe(II)-oxidizing genus Gallionella. A concomitant decrease in Chlorobi-associated bacteria occurred, although by summer the community composition resembled that observed in the previous autumn. Here, we provide the first insights into the microbial ecology and seasonal dynamics of bacterial communities of Fe(III)-rich deposits in the SWC and demonstrate that neutrophilic Fe(II)-oxidizing bacteria are important and dynamic members of these communities." @default.
- W2971365877 created "2019-09-12" @default.
- W2971365877 creator A5023414525 @default.
- W2971365877 creator A5028241795 @default.
- W2971365877 creator A5043518296 @default.
- W2971365877 creator A5054402982 @default.
- W2971365877 creator A5060745981 @default.
- W2971365877 creator A5083920042 @default.
- W2971365877 date "2019-09-05" @default.
- W2971365877 modified "2023-09-26" @default.
- W2971365877 title "Seasonal blooms of neutrophilic Betaproteobacterial Fe(II) oxidizers and Chlorobi in iron-rich coal mine drainage sediments" @default.
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