Table 2 Summary of Illumina tags among the V4 and V3V4 16S rRNA regions

Raw, n

6,233,517

4,435,468

1,776,855

Merged, n (%)

5,882,394 (94.36)

4,185,626 (94.36)

1,696,768 (94.36)

Dereplicated, n (%)

5,771,010 (98.10)

4,107,883 (98.14)

1,663,127 (99.18)

Filtered, n (%)

5,641,372 (97.75)

4,082,771 (95.32)

1,558,601 (97.74)

Mean ± SD

22,263 ± 2372

22,056 ± 2372

8354 ± 2372

OTUs (genus level)

10

9

7