TABLE 1 .
Incorporation of C and N by taxonomic groups based on NanoSIMS-derived population averages at 6 h for the cyanobacteria and 12 h for the heterotrophsa
| Treatment | µg C incorporated/well (± SE) |
µg N incorporated/well (± SE) |
||
|---|---|---|---|---|
| Cyanobacteria | Heterotroph | Cyanobacteria | Heterotroph | |
| Dark, extracellular | 0.93 (0.19) | 1.2 (0.23) | 0.13 (0.03) | 0.55 (0.08) |
| Diel, extracellular | 1.27 (0.30) | 1.3 (0.22) | 0.18 (0.04) | 0.65 (0.16) |
| DCMU, extracellular | 0.60 (0.10) | 1.3 (0.23) | 0.18 (0.02) | 0.89 (0.22) |
| Light, bicarbonate | 5.66 (0.75) | |||
| Dark, bicarbonate | NSb | |||
| Nitrate, light (estimated) | 1.5 | |||
| Nitrate, dark (estimated) | 0.09 | |||
a
The number of cells analyzed (n) was between 9 and 31.
b
NS, not significantly different from result seen with killed control.