Table 1. A summary of the pyrosequencing data.

	NC (n = 9)	NS (n = 10)	NL (n = 10)	HC (n = 10)	HS (n = 9)	HL (n = 9)
Reads	4600 ± 159	5219 ± 277	5697 ± 161***	5189 ± 271	5137 ± 251	4537 ± 116
OTUs	339 ± 6	321 ± 15	317 ± 6*	320 ± 10	369 ± 12*	345 ± 17
Phylum	8	10	10	9	10	10
Class	14	16	16	15	16	16
Order	15	18	17	16	18	18
Family	28	31	32	31	35	34
Genus	47	50	51	50	54	53
Ace	437 ± 9	443 ± 19	458 ± 20	418 ± 12	477 ± 19	459 ± 14
Chao	437 ± 12	437 ± 20	431 ± 12	417 ± 12	467 ± 18	465 ± 16
Shannon	4.45 ± 0.08	3.87 ± 0.17**	3.70 ± 0.11***	4.06 ± 0.15*	4.43 ± 0.05	4.33 ± 0.06
Simpson	0.030 ± 0.004	0.089 ± 0.020*	0.102 ± 0.013***	0.064 ± 0.013*	0.037 ± 0.004	0.037 ± 0.003

Data are presented as the means ± SE. *p < 0.05, **p < 0.01, ***p < 0.001.