Table 1.

Bacterial amoA gene diversity and richness indices from the surface sediments in the northern South China Sea

Sample name	Clone numbers	OTUs (95%)	Diversity and richness
			Simpson	Shannon	Chao1
407	32	7	0.29	1.31	5
525	24	10	0.19	1.61	6
CF5	27	8	0.39	1.02	4
08CF7	44	13	0.67	0.82	15.5
425	23	8	0.25	1.44	9
510	20	4	0.64	0.71	4.5
201	21	4	0.48	0.90	5
702a	39	11	0.12	2.15	12
704a	41	9	0.24	1.63	19
706a	41	5	0.40	1.05	5
707a	44	4	0.43	0.94	4
708a	31	2	0.94	0.14	2
709a	30	5	0.29	1.34	5
Total	351	26	0.15	2.26	30.2

^aThe samples cited from the reference Cao et al. (2011b)