Nitrogen CycleSoilNitrogenSoil MicrobiologyTreesFertilizersBiomassMineralsEcosystemNitrogen CompoundsNitrogen FixationNitrificationDenitrificationSoil PollutantsCell CyclePlanctomycetalesQuaternary Ammonium CompoundsNitrogen IsotopesCrenarchaeotaArchaeaAmmoniaMineral OilMineral WatersNitrite ReductasesBacteriaNitratesNitritesAgriculturePhylogenySeawaterGeologic SedimentsGenes, ArchaealDNA, ArchaealNitrous OxideOceans and SeasOxidation-ReductionClimate ChangeBiodiversityRNA, Ribosomal, 16SBlood Urea NitrogenNitrogen DioxideMolecular Sequence DataMenstrual CycleOxidoreductasesSequence Analysis, DNACarbonReactive Nitrogen SpeciesPhosphorusSoil Pollutants, RadioactivePlant RootsCell Cycle ProteinsGenome, BacterialBiodegradation, EnvironmentalBone and BonesOsteoporosisNitrogen OxidesPII Nitrogen Regulatory ProteinsMineral Fibers