Table 2.
dotur-based richness and diversity estimates for the 16S-ITS rRNA clone libraries constructed from carbonate and silicate surface samples from December 2006 and August 2007
| Sand type | Sampling time | Total clones | Total OTUS | Unique OTUS | Chao1 richness | Simpson index (1/D) | Shannon index (H) |
|---|---|---|---|---|---|---|---|
| Carbonate | Dec 2006 | 85 | 66 | 54 | 245 (145, 417) | 125 | 4.1 (3.9, 4.3) |
| Carbonate | Aug 2007 | 72 | 48 | 34 | 110 (73, 202) | 63 | 3.7 (3.5, 3.9) |
| Silicate | Dec 2006 | 53 | 38 | 32 | 203 (94, 596) | 44 | 3.4 (3.2, 3.7) |
| Silicate | Aug 2007 | 73 | 51 | 39 | 133 (86, 247) | 59 | 3.8 (3.5, 4.0) |
The definition of OTUS is based on a ≥ 98% identity. Chao1 richness and Shannon–Weaver indices are indicated with their 95% confidence interval in parentheses.