TABLE 2.
Estimates of the populations of the culturable heterotrophic bacteria (CFU) and the phenanthrene- degrading bacteria (MPN) in the four soils examined
| Soil | No. of culturable heterotrophic bacteria (107 CFU g−1)a | MPN count (MPN g−1)b | % of phenanthrene degraders |
|---|---|---|---|
| Risø | 1.91 ± 0.42 | <3.1 × 101 (0-15.0 × 101) | 0 |
| Amager | 9.00 ± 0.91 | <3.5 × 101 (0-17.0 × 101) | 0 |
| B&W | 2.46 ± 0.15 | 1.1 × 104 (0.11 × 104-3.4 × 104) | 0.04 |
| Ringe | 4.88 ± 0.21 | 1.8 × 106 (0.33 × 106-6.2 × 106) | 3.6 |
a
Mean ± standard deviation.
b
The values in parentheses are 95% confidence intervals.