MethaneIsotopesIsotope LabelingNitrogen IsotopesCarbon IsotopesOxygen IsotopesMethylococcaceaeMethylococcus capsulatusOxygenasesEuryarchaeotaZinc IsotopesHydrogenSulfur IsotopesDeuteriumMethylosinus trichosporiumIron IsotopesGeologic SedimentsArchaeaMethylocystaceaeEthaneOxidation-ReductionStrontium IsotopesDNA, ArchaealAtmosphereMethanolMethanosarcinalesAnaerobiosisBacteriaRadioisotope Dilution TechniqueCarbon DioxideAcetatesSoil MicrobiologyMethanomicrobiaceaeFermentationMass SpectrometrySeawaterRNA, Ribosomal, 16SMethanosarcinaceaeMicrobial ConsortiaEvolution, PlanetaryDeltaproteobacteriaSulfatesRumenMesnaWetlandsMethanomicrobialesKineticsCarbonIndicator Dilution TechniquesMethanobacteriaceaeMethylosinusGreenhouse EffectBeijerinckiaceaeEthyl EthersPhylogenyBiodegradation, EnvironmentalEcosystemSphagnopsidaMethanosarcinaMethylomonasHydrocarbonsLactuloseTrichloroethyleneGas Chromatography-Mass SpectrometryFresh WaterExtraterrestrial EnvironmentSaturnGasesMethanobacteriumNitrogenDNA, RibosomalOxidoreductasesButanesMolecular Sequence DataBacteria, AnaerobicGroundwaterBioreactorsFormatesSoilMercury IsotopesSewageRNA, ArchaealBeggiatoaAnimal FeedWater Microbiology