Table 4.

Volumetric conversion rates calculated from microprofiles

Conditions and sampleMean ± SD volumetric rate (nmol · mm−3 · h−1)
RespirationAmmonium oxidationNitrite oxidation
In situ
 A135.82 ± 7.8214.01 ± 6.6515.77 ± 0.87
 A233.40 ± 8.8611.98 ± 3.9913.44 ± 1.27
 A35.44 ± 0.22No NH4 + present7.65 ± 0.15
Incubation
 A1105.03 ± 42.1651.29 ± 29.4330.90 ± 3.97
 A290.15 ± 22.9542.45 ± 30.3835.46 ± 29.07
 A3ammonium 18.51 ± 0.237.617.65
 A3nitrite 50.75 ± 30.84No NH4 + present68.86 ± 30.32