TABLE 2.

DOC utilization, initial DOC concentration (To), and the concentration at the end (Tend)a

SeasonTreatmentDOC concn (μM)Utilized DOC (μg of C liter−1)Bacterial production (μg of C liter−1)
ToTend
March+RDOM+I479 ± 0459 ± 3.0240 ± 3614 ± 0.2
−RDOM+I46 ± 044 ± 2.924 ± 363.8 ± 0.1
+RDOM−I479 ± 0477 ± 024 ± 0
May+RDOM+I800 ± 0743 ± 11.8684 ± 14257 ± 0.7
−RDOM+I71 ± 17.972 ± 5.8−12 ± 21614 ± 1.4
+RDOM−I800 ± 0797 ± 41.336 ± 496
November+RDOM+I921 ± 0863 ± 5.9696 ± 7131.2 ± 0.9
−RDOM+I179 ± 35171 ± 096 ± 42011.6 ± 0.9
+RDOM−I921 ± 0906 ± 23.6180 ± 391
  • a Utilized DOC represents the DOC which was degraded at the end of the experiment. Bacterial production was calculated from ΔTNB.