S2. Coefficients of variation for Shannon diversity index and number of species observed among quality control samples.
| Indices* | Intra-plate CV (%) | Inter-plate CV (%) | ||
| 1st quantile | Median | 3rd quantile | ||
| CV, coefficients of variation; DNA, deoxyribonucleic acid; *, Indices were calculated with QIIME (Version1.7.0). | ||||
| Shannon | 0.80 | 1.82 | 1.94 | 3.70 |
| Observed-species | 2.21 | 2.94 | 5.00 | 6.57 |