Table 2. Microbial diversity parameters and relative abundance of major bacteria phyla according to the pooled libraries.

Library	Chao1	Total OTUs	No. of reads	Relative abundance (%)
				Proteobacteria	Firmicutes	Bacteroidetes	Actinobacteria	Acidobacteria	Cyanobacteria	Others
1a	803.57	720	23,040	86.0	3.5	8.2	1.1	0.6	0.4	0.2
1b	573.09	618	23,107	84.3	3.4	8.4	2.8	0.5	0.3	0.3
2a	395	449	23,113	82.2	14.7	1.3	1.7	0.1	0.1	< 0.1
2b	405.68	425	23,086	93.2	5.9	0.2	0.7	0.0	0.0	< 0.1
3a	966.17	1,014	23,042	69.6	16.3	4.3	2.6	0.5	6.0	0.7
3b	654	712	23,082	94.0	1.9	1.8	1.3	0.8	0.1	0.1
4a	739	787	23,092	92.8	2.9	2.0	1.4	0.6	0.1	0.2
4b	585.55	592	23,044	81.5	2.0	13.5	1.4	0.6	0.6	0.4
5a	661	719	23,076	85.0	7.6	4.6	1.3	1.1	0.1	0.3
5b	847.92	793	23,073	93.3	1.4	3.1	1.7	0.4	0.1	< 0.1
6a	751.85	680	23,053	85.0	2.1	10.9	0.8	0.5	0.3	0.4
6b	407.54	417	23,030	96.8	0.6	1.6	0.7	0.1	0.0	0.2
7a	533	590	23,129	83.9	1.9	12.1	1.1	0.4	0.4	0.2
7b	778.97	738	23,110	85.9	2.7	7.9	2.4	0.6	0.2	0.3
8a	709	763	23,055	86.7	5.6	3.7	2.4	1.0	0.2	0.4
8b	721.75	719	23,000	91.4	2.2	4.1	1.7	0.5	0.1	< 0.1
9a	918.5	853	23,066	87.2	3.8	6.5	1.3	0.8	0.1	0.3
9b	1015.67	913	23,063	84.9	3.5	4.4	4.1	1.6	0.2	1.3
10a	778.99	721	23,126	84.7	7.3	5.6	1.2	0.7	0.1	0.4
10b	781.32	776	23,074	71.9	21.6	3.5	2.3	0.5	0.1	0.1
11a	690.42	833	23,088	58.3	39.4	0.8	1.4	0.1	0.0	< 0.1
11b	792.86	726	23,097	55.7	39.0	2.8	2.0	0.2	0.1	0.2
12a	738.81	698	23,049	89.2	2.4	5.9	1.4	0.8	0.2	0.1
12b	706.46	722	23,036	86.0	2.5	5.1	4.6	0.8	0.8	0.2

OTU, operational taxonomic unit.