Nitrite and nitrous oxide made up 40% of the hypolimnetic dissolved inorganic nitrogen in mesotrophic Lake Rotoiti, New Zealand, prior to hypolimnetic anoxia. Up to 120 mg of N m-3 as nitrite and 20 mg of N m-3 as nitrous oxide accumulated, whereas dissolved-oxygen concentrations remained between 1.0 and 0.2 g m-3 and were totally consumed when the hypolimnion became completely anoxic. Assays of water column nitrification potentials, together with measurements of the relative rates of nitrate and nitrite reduction, suggested that at low dissolved-oxygen concentrations both nitrite and nitrous oxide were produced mainly by ammonium-oxidizing bacteria, with nitrous oxide being a product of nitrifier denitrification.
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机译：亚硝酸盐和一氧化二氮构成了低营养性缺氧之前新西兰中营养的Rotoiti湖中低营养性溶解无机氮的40％。积累了多达120 mg N m-3的亚硝酸盐和20 mg N m-3的一氧化二氮，而溶解氧的浓度则保持在1.0至0.2 g m-3之间，并且在次高纯碱完全缺氧时被完全消耗掉了。对水柱硝化潜力的测定以及硝酸盐和亚硝酸盐还原的相对速率的测量结果表明，在低溶解氧浓度下，亚硝酸盐和一氧化二氮均主要由铵氧化细菌产生，而一氧化二氮是硝化器的产物反硝化。
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