Table 2.

Diversity analysis of ARHD gene libraries from coastal marine sediment samples.

Library	N	n	H	L	C (%)
Ac-MS05	34	1	0.00	1.00	100
Ac-GR06	72	2	0.71	0.68	100
Ac-SC04	16	1	0.00	1.00	100
Ac-EM06	92	3	0.50	0.84	100
Ac-OR04	20	2	0.99	0.48	100
Ac-OR05	77	4	0.73	0.76	98.7
Ac-OR06	51	5	1.45	0.48	98.0

N, number of ARHD clones screened; n, number of detected ARHD gene types; H, Shannon's diversity index; L, Simpson's dominance index; C, library coverage.