Specific nitrite and nitrous oxide production profiles for assigned phenotypes. Nitrite (circles) and nitrous oxide (squares) production of methanotrophic strains cultivated in nitrate medium (dNMS, solid line) and ammonium medium (dAMS, dashed line). Nitrous oxide values showed are for total vial and were corrected to N2O-N to allow equimolar nitrogen comparison with NO2
−. The Y-axis could not be made uniform for all strains for clarity; care should be taken when interpreting the data between strains. Phenotype I is represented by M. methanica NCIMB 11130T, phenotype II by M. koyamae R-45378, phenotype III by M. methanica R-45363, phenotype IV by M. methanica R-45371, phenotype V by M. koyamae R-45383, phenotype VI by M. koyamae R-49807, phenotype VII by M. lenta R-45370, Phenotype VIII by Methylosinus sp. R-45379.