Geogenic Factors as Drivers of Microbial Community Diversity in Soils Overlying Polymetallic Deposits

Applied and Environmental Microbiology
Frank ReithSteven A Wakelin

Abstract

This study shows that the geogenic factors landform, lithology, and underlying mineral deposits (expressed by elevated metal concentrations in overlying soils) are key drivers of microbial community diversity in naturally metal-rich Australian soils with different land uses, i.e., agriculture versus natural bushland. One hundred sixty-eight soil samples were obtained from two metal-rich provinces in Australia, i.e., the Fifield Au-Pt field (New South Wales) and the Hillside Cu-Au-U rare-earth-element (REE) deposit (South Australia). Soils were analyzed using three-domain multiplex terminal-restriction-fragment-length-polymorphism (M-TRFLP) and PhyloChip microarrays. Geogenic factors were determined using field-mapping techniques and analyses of >50 geochemical parameters. At Fifield, microbial communities differed significantly with geogenic factors and equally with land use (P < 0.05). At Hillside, communities in surface soils (0.03- to 0.2-m depth) differed significantly with landform and land use (P < 0.05). Communities in deeper soils (>0.2 m) differed significantly with lithology and mineral deposit (P < 0.05). Across both sites, elevated metal contents in soils overlying mineral deposits were selective for a range of bact...Continue Reading

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Citations

Apr 22, 2016·FEMS Microbiology Ecology·Maria Angelica ReaFrank Reith
Mar 20, 2018·Brazilian Journal of Microbiology : [publication of the Brazilian Society for Microbiology]·Kelly Campos Guerra Pinheiro de GoesDiva S Andrade
Dec 5, 2019·Microbial Ecology·Ismael Velasco-GonzálezMercedes Martín-Cereceda
Jun 4, 2019·Frontiers in Microbiology·Magdalene AdamczykBeat Frey

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