ChloroflexiRNA, Ribosomal, 16SPhylogenyBacteriaHydrocarbons, HalogenatedGeologic SedimentsDNA, RibosomalActinobacteriaSewageHydrothermal VentsChloroflexusProteobacteriaWaste ManagementSequence Analysis, DNASoil MicrobiologyBiodiversityGenes, rRNADNA, BacterialHot SpringsArchaeaMicrobial ConsortiaMetagenomeDNA, ArchaealMolecular Sequence DataSoilRNA, BacterialBacterial LoadAnaerobiosisWater MicrobiologyCluster AnalysisIn Situ Hybridization, FluorescenceEcosystemSeawater