Table 3. The α-diversity using 1543 sequences.

	Post hoc mined				All mined		Unmined
	Group A	s.e.	Group B	s.e.		s.e.		s.e.
Chao 1 richness	678.84	±66.5	820.9	±44.39	742.83	±94.07	652.36	±121.82
Margalef's index (D)	62.03	±5.09	68.88	±5.25	65.2	±6.22	61.21	±9.13
Shannon index (H')	7.88	±0.17	7.91	±0.28	7.89	±0.23	7.92	±0.35
Simpson diversity (1-D)	0.991	±0.001	0.989	±0.004	0.99	±0.003	0.992	±0.003
Evenness (E)	0.892	±0.01	0.88	±0.02	0.887	±0.017	0.9	±0.018
Dominance	0.009	±0.001	0.011	±0.004	0.01	±0.003	0.008	±0.003