Table 1.

Alpha diversity index, number of OTUs and filtered reads from DNA samples extracted with the CLU, ZBC or QIA methods

Sample	Filtered number	Mean length	OTUs	Shannon index	Chao1 index
CLU	29,618	421.2	852	3.41	1,609
ZBC	41,379	412.9	759	2.61	1,458
QIA	48,586	414.9	698	2.57	1,320