Nitrogen CycleSoilNitrogenFertilityFertilizersBiomassSoil MicrobiologyEcosystemNitrogen CompoundsNitrogen FixationNitrificationDenitrificationSoil PollutantsCell CyclePlanctomycetalesQuaternary Ammonium CompoundsNitrogen IsotopesCrenarchaeotaArchaeaAmmoniaNitrite ReductasesFertility PreservationBacteriaNitratesNitritesAgriculturePhylogenySeawaterTreesGenes, ArchaealDNA, ArchaealNitrous OxideGeologic SedimentsOceans and SeasOxidation-ReductionClimate ChangeBiodiversityRNA, Ribosomal, 16SMolecular Sequence DataMenstrual CycleBlood Urea NitrogenNitrogen DioxideInfertilityInfertility, MaleFertility AgentsInfertility, FemaleSequence Analysis, DNAOxidoreductasesCarbonReactive Nitrogen SpeciesBirth RateSpermatozoaPregnancyEstrous CycleSoil Pollutants, RadioactivePlant RootsCell Cycle ProteinsReproductionSperm MotilityGenome, BacterialCryopreservationNitrogen OxidesBiodegradation, EnvironmentalReproductive Techniques, AssistedSperm CountReproductive BehaviorPII Nitrogen Regulatory Proteins