Table 2.
Alpha diversity indices for H2 + CO2 (designated as C1–C7 HC) and HCO3− (are designated as C1–C7 BC) enrichment samples.
| Samples | Chao1 | Goods coverage | Shannon index (H′) | Simpson index (λ) | ACE |
|---|---|---|---|---|---|
| C1HC | 4766.65 | 0.91 | 8.88 | 0.99 | 4807.51 |
| C2HC | 4176.03 | 0.93 | 8.45 | 0.99 | 4553.18 |
| C3HC | 4684.003 | 0.91 | 9.09 | 0.99 | 4752.75 |
| C4HC | 6236.15 | 0.87 | 10.18 | 0.99 | 6709.35 |
| C6HC | 7429.3 | 0.85 | 9.79 | 0.98 | 7774.59 |
| C7HC | 5821.09 | 0.87 | 9.74 | 0.98 | 6299.06 |
| C1BC | 2058.12 | 0.92 | 8.14 | 0.98 | 2150.93 |
| C2BC | 2939.65 | 0.95 | 8.44 | 0.99 | 3212.48 |
| C3BC | 770.93 | 0.95 | 7.82 | 0.99 | 808.06 |
| C4BC | 6658.15 | 0.86 | 9.89 | 0.98 | 7228.79 |
| C6BC | 6828.39 | 0.86 | 10.10 | 0.99 | 7492.57 |
| C7BC | 7236.27 | 0.85 | 10.33 | 0.99 | 7780.13 |