Phylogenetic Diversity of Archaea and the Archaeal Ammonia Monooxygenase Gene in Uranium Mining-Impacted Locations in Bulgaria

Table 2

Predicted richness (Chao 1 and ACE) and diversity (Shannon-Weiner index) of BuhC, BuhD, and Sliv 16S rDNA archaeal clone libraries, expressed as means ± standard deviation.

Clone library	Number of clones	Number of OTUs	Number of singletons/doubletons	Chao 1	ACE	Shannon-Weiner index
BuhC^a	156	7	4	4±0.25	N/A	0.97±0.10
BuhD^b	128	8	1	7±0.00	7±0.00	1.51±0.13
Sliv^c	71	3	1	2±0.00	2±0.00	0.32±0.24

OTUs were defined at ^a3%, ^b6%, and ^c9% differences in 16S rRNA gene sequences.