Table 2. Similarity-based OTUs and species estimates.

Sample	Reads	1% dissimilarity			3% dissimilarity			6% dissimilarity			10% dissimilarity
		OTU	ACE	Chao1	OTU	ACE	Chao1	OTU	ACE	Chao1	OTU	ACE	Chao1
Archaea
A20 m	13294	1825	3074	2955	966	1919	1866	703	1454	1376	599	1271	1177
A50 m	13293	2005	3592	3510	1078	2280	2073	828	1785	1524	729	1587	1346
A200 m	4234	787	1284	1242	384	807	699	272	606	522	228	554	472
A1500 m	5245	962	1825	1769	578	1452	1269	477	1300	1102	445	1173	983
D20 m	7664	1009	1676	1652	494	1071	1056	355	766	737	306	695	689
D50 m	18647	1066	1693	1740	448	855	875	299	594	562	233	517	460
D200 m	7032	847	1336	1381	407	798	785	302	655	641	260	617	595
D1500 m	10359	1042	1691	1674	561	1034	977	442	909	789	389	827	719
Bacteria
A20 m	16822	1459	2762	2787	847	1607	1533	597	1204	1218	424	910	954
A50 m	17486	1804	3013	3073	1087	1663	1685	842	1233	1252	682	969	998
A200 m	10019	1166	1860	1813	684	1034	1026	516	746	731	413	562	554
A1500 m	6943	963	1519	1523	646	924	916	512	696	702	417	550	553
D20 m	11671	642	999	998	341	532	539	266	382	380	231	321	332
D50 m	18864	1431	2108	2041	839	1218	1220	670	939	916	566	779	755
D200 m	13723	1179	1814	1842	704	993	1022	557	788	829	453	636	686
D1500 m	12418	1275	1905	1909	850	1148	1181	668	899	941	554	743	782

The numbers of reads after quality control and noise clearance are shown.

The ACE, Chao1 and OTU parameters are presented for a dissimilarity of 1%, 3%, 6% and 10% between the reads.