Journal ArticleDOI
Interrelations between sulfate-reducing and methane-producing bacteria in bottom deposits of a fresh-water lake. I. Field observations
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Observations on the seasonal periodicity in bottom deposits of Lake Vechten indicated an ecological relationship between sulfate-reducing and methane-producing bacteria and the different localities of the two bacterial groups may be due to sensitivity of methane producers to hydrogen sulphide.Abstract:
Observations on the seasonal periodicity in bottom deposits of Lake Vechten indicated an ecological relationship between sulfate-reducing and methane-producing bacteria. Sulfate reducers are most abundant at depths of 0 to 2 cm in the mud at pS2- values of about 11 and redox potential values of-100 to-150 mV. Maximum number of methane producers are situated at depths of 3 to 6 cm in the mud at pS2- values of about 14, redox potential values of-250 to-300 mV and maximum values of the methane concentration.read more
Citations
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Biogenic methane formation in marine and freshwater environments: CO2 reduction vs. acetate fermentation—Isotope evidence
TL;DR: In this paper, the carbon and hydrogen stable isotope composition of the methane as a function of the coexisting carbon dioxide and formation water precursors is used to distinguish two primary methanogenic pathways.
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The hydrogen and carbon isotopic composition of methane from natural gases of various origins
TL;DR: The deuterium concentrations (δD vs SMOW) of biogenic methanes from world-wide occurrences range from −180 to −280% and were found to be depleted in deutrium by approx. 160%.
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Taxonomic, Phylogenetic, and Ecological Diversity of Methanogenic Archaea
TL;DR: Methanogens are strict anaerobes which share a complex biochemistry for methane synthesis as part of their energy metabolism as mentioned in this paper and have been studied extensively in the literature.
Journal ArticleDOI
Comparison of microbial dynamics in marine and freshwater sediments: Contrasts in anaerobic carbon catabolism1
TL;DR: The microbiota of freshwater and marine sediments serve similar roles in carbon degradation and nutrient regeneration, however, because of differences in the chemical environment between freshwater and Marine systems, distinct physiological groups of bacteria dominate terminal carbon catabolism in each system.
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The biology of methanogenic bacteria.
TL;DR: This article corrects the article on p. 517 in vol.
References
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Journal ArticleDOI
The exchange of dissolved substances between mud and water in lakes, ii
A roll tube method for cultivation of strict anaerobes
TL;DR: The anaerobes can be classified as oxyduric, i.e. surviving exposure to O2 but not growing in its presence, and oxylabile Species, killed by exposure to oxygen.
The Roll-Tube Method for Cultivation of Strict Anaerobes
Robert E. Hungate,J. Macy +1 more
TL;DR: The anaerobes can be classified as oxyduric, i.e. surviving exposure to O2 but not growing in its presence, and oxylabile Species, killed by exposure to oxygen as discussed by the authors.
Journal ArticleDOI
Limits of the Natural Environment in Terms of pH and Oxidation-Reduction Potentials
TL;DR: In this article, the electron and the proton content (measured as electrode potential [Eh] and pH) of an environment characterize this environment in many ways, and the electrode potential and the pH are used as empirical parameters rather than as electrochemical data capable of thermodynamic interpretation.
Journal ArticleDOI
Studies on Redox Potential of Marine Sediments
TL;DR: The redox potential of sedimentary materials is defined as the electron-escaping tendency of a reversible oxidation-reduction system, and is expressed as an intensity factor as mentioned in this paper.
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