Table 4. 16S diversity.

Bacterial 16S rRNA amplicon diversity analysis of two arid soil sites in Cuatro Cienegas, Coahuila, Mexico.

	OTUs a	Singlets a	Doublets a	Chao1	CI b	Shannon	CI b	Simpson	CI b	Ace	CI b	% coverage c
Dry lagoon
Before sterilization	6586	4917	882	43226	(39437–47450)	7.31	(7.27–7.34)	0.007	(0.006–0.007)	99811	(96592–103144)	0.63
3 months	4106	2760	587	20166	(18253–22337)	6.07	(6.03–6.11)	0.020	(0.019–0.021)	47720	(45885–49636)	0.78
6 months	7518	5830	1093	42815	(39583–46372)	7.59	(7.56–7.63)	0.004	(0.004–0.004)	106755	(103366–110262)	0.61
9 months	3552	2433	451	10097	(9334–10961)	7.17	(7.15–7.21)	0.002	(0.002–0.003)	18720	(17980–19497)	0.77
12 months	6882	5114	808	60661	(54582–67515)	7.70	(7.66–7.73)	0.004	(0.004–0.005)	137126	(133112–141267)	0.58
Undisturbed soil	8258	7157	1135	53773	(49545–58434)	8.16	(8.13–8.19)	0.001	(0.001–0.001)	130419	(126816–134131)	0.57
River
Before sterilization	8268	6797	1085	53676	(49534–58233)	7.80	(7.76–7.83)	0.005	(0.004–0.005)	140680	(136580–144910)	0.56
3 months	3785	2878	657	17395	(15706–19323)	6.04	(6.00–6.08)	0.013	(0.013–0.014)	32413	(31077–33815)	0.81
6 months	9001	7289	1148	61455	(56784–66583)	8.24	(8.21–8.26)	0.001	(0.001–0.002)	161368	(156754–166125)	0.52
9 months	6530	6607	1202	33236	(30685–36056)	7.35	(7.32–7.38)	0.003	(0.003–0.003)	94400	(91445–97457)	0.69
12 months	6356	4728	734	27928	(25926–30135)	7.80	(7.75–7.82)	0.002	(0.002–0.002)	67224	(65075–69452)	0.62
Undisturbed soil	8461	7019	1171	52934	(48931–57332)	8.23	(8.20–8.25)	0.001	(0.001–0.001)	125851	(122223–129596)	0.54

Notes.

All samples were normalized to 10,441 sequences (Table S3) for diversity comparison, values in parentheses represent the lower and upper 95% confidence interval associated with the Chao1 nonparametric estimator.

^aValues calculated based on 97% threshold.

^bLower and upper 95% confident intervals associated with the diversity parameter.

^cGood’s coverage estimator.