Table 1. Number of sequences, OTUs, and alpha-diversity indices in OLH and OLL groups.

Taxa	Groups	Seq/ sample	OTUs /sample	Goods Coverage	Shannon	Simpson
Bacteria	OLH	30,113	1,004	0.99	7.44	0.96
	OLL	32,234	999	0.99	7.69	0.98
Methanogen	OLH	31,319	76	0.99	3.51	0.85
	OLL	39,306	76	0.99	3.18	0.79
Protozoa	OLH	19,666	7	1.00	1.68	0.62
	OLL	14,938	6	1.00	1.23	0.42
Fungi	OLH	5,662	5	1.00	0.70	0.27
	OLL	4,176	4	1.00	0.73	0.29

OLH: High group; OLL: Low group