Table 5. Relative abundance of most numerically dominant bacterial genera1.
| Bacterial genus | All Samples | July 2011 | December 2011 | March 2012 | August 2012 |
| Methylomonas | 40.8 | 33.6±15.6 | 95.5±3.5 | 32.4±21.3 | 1.3±0.6 |
| Acinetobacter | 18.5 | 0.0±0.0 | 0.0±0.0 | 0.0±0.0 | 74.2±2.4 |
| Mycobacterium | 14.7 | 59.1±14.3 | 0.2±0.2 | 0.1±0.1 | 0.0±0.0 |
| Unclass. Xanthomonadaceae | 13.5 | 0.0±0.0 | 2.6±2.4 | 50.4±24.4 | 0.1±0.1 |
| Pseudomonas | 4.7 | 0.6±0.3 | 0.3±0.2 | 15.5±8.6 | 2.1±0.2 |
| Unclass. Betaproteobacteria | 2.3 | 0.3±0.1 | 0.1±0.1 | 0.0±0.0 | 9.0±1.6 |
| Methylobacterium | 1.2 | 3.7±2.3 | 0.2±0.2 | 0.1±0.0 | 0.8±0.1 |
| Unclass. Bacteria | 1.0 | 0.5±0.2 | 0.3±0.1 | 0.0±0.0 | 3.2±2.8 |
| Massilia | 0.9 | 0.0±0.0 | 0.0±0.0 | 0.0±0.0 | 3.4±0.7 |
| Unclass. Gammaproteobacteria | 0.4 | 0.7±0.4 | 0.2±0.2 | 0.7±0.5 | 0.0±0.0 |
1
Values for each sampling period represent mean values (n = 3) ± standard error.