thumb|upright=1.5| ANAMMOX is anaerobic ammonium oxidation, DNRA is dissimilatory nitrate reduction to ammonium, and COMMAMOX is complete ammonium oxidation.
thumb|upright=15| anammox is anaerobic ammonium oxidation dnra is dissimilato:ry nitr:ate reduction to ammonium and commamox is complete ammonium oxidation