TABLE 3.

Composition and diversity statistics for amoA clone libraries^a

Parameter	Betaproteobacteria			Archaea (winter)
	Summer	Winter	Totalb
No. of clones	92	91	183	45
No. of OTUs	3	5	6	4
% Coverage	100.0	97.8	98.9	100.0
Chao1 score	3	6	7	4
Chao1 score 95% CIc	3-3	5.1-18.5	6.1-19.7	4-4
Shannon score	0.36	1.16	1.10	1.16
Shannon score 95% CI	0.18-0.53	1.04-1.28	0.98-1.21	0.99-1.33
Simpson	0.84	0.33	0.40	0.33

^aGroups are defined at 5% nucleotide acid divergence.

^bThat is, the total of both summer and winter.

^cCI, confidence interval.