Table 1.
Observed OTUs and α-diversity indices.
| Sampling site and depth (cm) | Observed OTUs (Genera) | Chao1 Richness | Shannon Index (H) | Simpson Diversity (1/D) |
|---|---|---|---|---|
| 1. Extreme hyper-arid locations 1 | ||||
| Yungay | ||||
| Y6_1 (2) | 186 | 316 | 4.01 | 19.2 |
| Y6_2 (30) | 87 | 134 | 2.78 | 7.9 |
| Y6_3 (100) | 159 | 222 | 3.87 | 19.6 |
| CAB2 (2) | 175 | 331 | 3.73 | 16.9 |
| CAB3 (2) | 63 | 110 | 3.40 | 20.8 |
| Lomas Bayas | ||||
| LB (1) | 162 | 264 | 3.54 | 10.1 |
| Cordillera de la Sal | ||||
| VDL (2) | 185 | 242 | 4.29 | 27.8 |
| 2. Hyper-arid locations 2 | ||||
| Laguna Chaxa | ||||
| CHX1 (2) | 222 | 306 | 4.48 | 43.5 |
| CHX2 (30) | 208 | 295 | 4.38 | 29.4 |
| CHX33 (2) | 171 | 247 | 3.73 | 14.7 |
| Cerro Paranal | ||||
| POP2 (2) | 157 | 228 | 3.40 | 9.1 |
| Yungay Oasis | ||||
| Y24 (2) | 89 | 137 | 3.21 | 15.4 |
1MAR 0.002, 2MAR 0.009, 3Partly colonized by cyanobacteria, 4Tamarisk grove.