Table 2. Richness and diversity estimates of OTUs (97% similarity).
| Library |
OTU richnessa |
OTU diversityb |
|||
|---|---|---|---|---|---|
| Observed | Chao1 | ACE | Simpsonc | Shannon | |
| No. 1 (Day 1d, DNA) | 737 | 1309 (±86) | 1334 (±22) | 52.84 | 5.08 |
| No. 2 (Day 1, RNA) | 486 | 880 (±70) | 952 (±19) | 5.30 | 3.15 |
| No. 3 (Night 1d, DNA) | 291 | 633 (±81) | 616 (±16) | 29.55 | 4.52 |
| No. 4 (Night 1, RNA) | 357 | 645 (±59) | 681 (±15) | 3.88 | 2.63 |
| No. 5 (Day 2d, DNA) | 384 | 723 (±72) | 715 (±16) | 14.10 | 3.77 |
| No. 6 (Day 2, RNA) | 242 | 469 (±62) | 433 (±13) | 3.38 | 2.18 |
| No. 7 (Night 2d, DNA) | 866 | 1679 (±107) | 1813 (±28) | 35.20 | 4.96 |
| No. 8 (Night 2, RNA) | 275 | 543 (±63) | 613 (±16) | 3.93 | 2.50 |
a
Chao1 and ACE (abundance-based coverage estimators) indices are non-parametric estimators of species (OTU) richness (total number of different OTUs in a given sample).
b
Shannon and Simpson diversity indices consider both species richness and evenness (relative abundance).
c
Inverse simpson values are reported.
d
Day 1 is 1200 hours, on 10 November, 2009; Night 1 is 0000 hours, on 11 November, 2009; Day 2 is 1200 hours, on 12 November, 2009; Night 2 is 0000 hours, on 13 November, 2009.