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- W1988183896 abstract "Abstract Methanogenesis, sulfate reduction, and rates of carbon mineralization were determined for samples derived at different depths from four cores drilled at the Savannah River Plant, Aiken South Carolina. Three‐gram subsamples of the sediments were dispensed to 10‐mL serum bottles under 5% H2/95% N2 and amended with 0.5 mL degassed distilled water with or without the following solutes: formate plus acetate, bicarbonate, lactate, and radiolabeled sulfate, glucose, and Índole. After incubating 1 to 5 days, the sediments were assayed for methane, H2, 35S, and I4CO2. No methanogenesis was detected at any depth in any core and sulfate was rarely reduced. Evolution of 14CO2 from glucose and indole was detected in sediments as deep as 262 and 259 m, respectively. At some depths the 14CO2 evolution rate was comparable to that of surface soils; however, at other depths no 14CO2 evolution could be detected. Injection of sterile air into anaerobic incubations increased rates of carbon mineralization at all depths that had demonstrated anaerobic activity and stimulated mineralization activity in sediments that were inactive anaerobically, suggesting a predominance of aerobic metabolism. Increasing the concentration of added glucose and indole often increased the resulting rates of 14CO2 evolved from these substrates. Our data indicate that both aerobic and anaerobic microorganisms are present and metabolically active in samples from deep subsurface environments." @default.
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- W1988183896 date "1989-01-01" @default.
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- W1988183896 title "Aerobic and anaerobic microbial activity in deep subsurface sediments from the savannah river plant" @default.
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- W1988183896 doi "https://doi.org/10.1080/01490458909377852" @default.
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