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NITRIFICATION BY MARINE BACTERIA IN LOW CONCENTRATIONS OF SUBSTRATE AND OXYGEN 1
Author(s) -
Carlucci A. F.,
McNally P. M.
Publication year - 1969
Publication title -
limnology and oceanography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.7
H-Index - 197
eISSN - 1939-5590
pISSN - 0024-3590
DOI - 10.4319/lo.1969.14.5.0736
Subject(s) - substrate (aquarium) , nitrification , nitrifying bacteria , oxygen , environmental chemistry , nitrite , bacteria , carbon fibers , chemistry , ammonia , carbon dioxide , nitrogen , biology , ecology , nitrate , organic chemistry , materials science , genetics , composite number , composite material
Chemoautotrophic nitrifying bacteria, isolated from open‐ocean waters, oxidized low concentrations of substrate (5 µ g‐atom NH 3 ‐N or 20 µ g‐atom NO 2 − ‐N/liter) in liquid medium containing less than 0.1 ml of oxygen/liter and in solid medium under 0.002 atm of oxygen. Carbon assimilations for three nitrifying bacteria were higher in 0.002 than in 0.2 atm of oxygen. More carbon was assimilated per unit of substrate oxidized in low than in high concentrations of oxygen. In deeper, oxygen‐poor waters of some oceans, high concentrations of nitrite may arise from ammonia oxidation.