NitrificationNitrogen CycleDenitrificationAmmoniaNitrosomonasNitrogen CompoundsNitrogen FixationNitrogenArchaeaNitritesCrenarchaeotaQuaternary Ammonium CompoundsNitratesNitrogen IsotopesSoil MicrobiologySoilBacteriaNitrobacterCell CycleNitrous OxidePlanctomycetalesOxidation-ReductionGenes, ArchaealDNA, ArchaealBrachiariaBradyrhizobiaceaeFertilizersSeawaterAutotrophic ProcessesBetaproteobacteriaGeologic SedimentsEcosystemOxidoreductasesWater PurificationBioreactorsPhylogenyOceans and SeasTreesNitrosomonas europaeaNitrite ReductasesBiodiversityWaste Disposal, FluidAgricultureSewageGram-Negative Chemolithotrophic BacteriaRNA, Ribosomal, 16SWaste WaterBiological Oxygen Demand AnalysisMolecular Sequence DataSequence Analysis, DNAClimate ChangeDenaturing Gradient Gel ElectrophoresisNitrosomonadaceaeBlood Urea NitrogenNitrogen DioxideUzbekistanWater MicrobiologyLife Support SystemsHeterotrophic ProcessesProteobacteriaFresh WaterMenstrual CyclePicolinesPoaceaeManureReactive Nitrogen SpeciesDreissenaBiomassCell Cycle ProteinsPlant RootsNitrate ReductaseDNA, RibosomalUreaNitrogen OxidesGenome, BacterialAlcaligenesDNA, BacterialAerobiosisTropical ClimatePII Nitrogen Regulatory ProteinsMethaneArchaeal ProteinsWater Pollutants, ChemicalAlkynesCarbonSorghumBiotaEstrous CycleSulfidesCluster AnalysisHydrogen-Ion ConcentrationRiversSoil PollutantsBacteroidetesOxygenGenes, rRNACitric Acid CycleCulture MediaSeasonsParacoccus denitrificans