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Hydrogenotrophic Methanogenesis by Moderately Acid-Tolerant Methanogens of a Methane-Emitting Acidic Peat
ABSTRACT The emission of methane (1.3 mmol of CH4 m−2 day−1), precursors of methanogenesis, and the methanogenic microorganisms of acidic bog peat (pH 4.4) from a moderately reduced forest site wereExpand
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Microbial Reduction of Fe(III) in Acidic Sediments: Isolation of Acidiphilium cryptum JF-5 Capable of Coupling the Reduction of Fe(III) to the Oxidation of Glucose
ABSTRACT To evaluate the microbial populations involved in the reduction of Fe(III) in an acidic, iron-rich sediment, the anaerobic flow of supplemental carbon and reductant was evaluated in sedimentExpand
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Electron flow in an iron‐rich acidic sediment—evidence for an acidity‐driven iron cycle
The anoxic sediment of an acidic (pH ∼3) iron- and sulfate-rich lake and its pore water was studied with respect to the turnover rates of solid and dissolved iron and sulfur species. HighExpand
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Microarray and Functional Gene Analyses of Sulfate-Reducing Prokaryotes in Low-Sulfate, Acidic Fens Reveal Cooccurrence of Recognized Genera and Novel Lineages
ABSTRACT Low-sulfate, acidic (approximately pH 4) fens in the Lehstenbach catchment in the Fichtelgebirge mountains in Germany are unusual habitats for sulfate-reducing prokaryotes (SRPs) that haveExpand
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Reduction processes in forest wetlands: Tracking down heterogeneity of source/sink functions with a combination of methods
Abstract Wetlands are considered to be the biggest unknowns regarding the influence of global climate change on element dynamics, so knowledge of processes and conditions controlling sink and sourceExpand
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Microbial cycling of iron and sulfur in acidic coal mining lake sediments
Lakes caused by coal mining processes are characterized by low pH, low nutrient status, and high concentrations of Fe(II) and sulfate due to the oxidation of pyrite in the surrounding mine tailings.Expand
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Ecological consequences of the phylogenetic and physiological diversities of acetogens
Acetogens reduce CO2 to acetate via the acetyl-CoA pathway and have been classically thought of as obligately anaerobic bacteria. Nearly 100 acetogenic species from 20 different genera have beenExpand
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pH Gradient-Induced Heterogeneity of Fe(III)-Reducing Microorganisms in Coal Mining-Associated Lake Sediments
ABSTRACT Lakes formed because of coal mining are characterized by low pH and high concentrations of Fe(II) and sulfate. The anoxic sediment is often separated into an upper acidic zone (pH 3; zone I)Expand
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Where less may be more: how the rare biosphere pulls ecosystems strings
Rare species are increasingly recognized as crucial, yet vulnerable components of Earth’s ecosystems. This is also true for microbial communities, which are typically composed of a high number ofExpand
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Ecophysiology of Fe-Cycling Bacteria in Acidic Sediments
ABSTRACT Using a combination of cultivation-dependent and -independent methods, this study aimed to elucidate the diversity of microorganisms involved in iron cycling and to resolve their in situExpand
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