Table 2.
Number of OTUs retrieved in the oxidized and the reduced basaltic glass incubated in situ, the sediment and the water samples using Sanger sequencing and pyrosequencing (pyro) along with estimates of diversity and richness.
| Collected sequences | OTU observed | Shannon H′ (CI) | Chao1 (95% CI) | |
|---|---|---|---|---|
| Water (Sanger) | 87 | 24 | 2.51 (±0.25) | 70 (36–195) |
| BO2 (Sanger) | 81 | 28 | 3.11 (±0.18) | 36 (31–52) |
| BH2 (Sanger) | 42 | 21 | 2.77 (±0.33) | 38 (27–74) |
| BH2 (pyro) | 3797 | 495 | 3.23 (±0.08) | 1161 (981–1408) |
| Sediment (Sanger) | 64 | 57 | 4.00 (±0.18) | 270 (145–570) |
CI stands for confidence indices.