Table 1.

Relative abundance of selected genera in the four groups.

	Relative abundance (%)				P#
	SG	AG	GIN	GC
The genera enriched in GC compared with SG
Prevotella_2	0.014	0.317	0.299	0.135	0.006
Oceanobacillus	0.011	0.362	0.000	0.472	0.006
Lentibacillus	0.012	0.595	0.000	0.667	0.011
Kroppenstedtia	0.018	0.608	0.001	0.846	0.012
Parvimonas	0.076	0.177	0.500	0.178	0.020
Erysipelotrichaceae_UCG-007	0.194	0.248	0.258	0.242	0.021
Staphylococcus	0.079	0.115	0.013	0.113	0.026
Eikenella	0.024	0.015	0.022	0.232	0.028
Bifidobacterium	0.108	0.190	0.002	0.327	0.038
The genera depleted in GC compared with SG
Prevotella_1	0.173	0.019	0.154	0.015	0.001
CL500-29_marine_group	0.086	0.003	0.045	0.008	0.001
Rhodobacter	0.285	0.011	0.063	0.014	0.003
Massilia	0.419	0.065	0.085	0.048	0.003
Flavihumibacter	0.153	0.001	0.055	0.013	0.003
Ensifer	0.108	0.028	0.059	0.019	0.003
Hydrogenophaga	0.073	0.004	0.026	0.005	0.003
Anaerobacillus	15.208	7.702	9.883	6.744	0.004
Nitrospira	0.176	0.014	0.047	0.017	0.004
Ferruginibacter	0.148	0.000	0.026	0.014	0.004
Gemmobacter	0.091	0.001	0.021	0.005	0.004
Denitratisoma	0.101	0.005	0.092	0.011	0.007
Bacillus	14.978	7.716	9.092	6.866	0.008
Brevundimonas	0.091	0.034	0.001	0.002	0.038
Romboutsia	0.156	0.011	0.609	0.136	0.043
The genera enriched in GIN
Romboutsia	0.156	0.011	0.609	0.136
Fusicatenibacter	0.089	0.002	0.492	0.002
Prevotellaceae_Ga6A1_group	0.154	0.001	0.276	0.046
Intestinimonas	0.027	0.014	0.270	0.035
The genera continuously enriched from SG to GC
Slackia	0.0000	0.0004	0.0007	0.0058
Selenomonas	0.0280	0.0309	0.0393	0.0441
Bergeyella	0.0135	0.0240	0.0269	0.0434
Capnocytophaga	0.1540	0.2549	0.2727	0.4965

^#P: SG vs. GC.