MethaneBeggiatoaGeologic SedimentsArchaeaDNA, ArchaealMediterranean SeaAnaerobiosisSeawaterRNA, Ribosomal, 16SBacteriaDNA, RibosomalPhylogenyOxidation-ReductionMethylococcaceaeDNA, BacterialMethylococcus capsulatusOxygenasesEuryarchaeotaMethylosinus trichosporiumHydrogenCaveolin 2EthaneMethanolMethanosarcinalesAtmosphereMethanomicrobiaceaeMethanosarcinaceaeSoil MicrobiologyFermentationGanglion CystsAcetatesMesnaMicrobial ConsortiaMethanomicrobiales