Table 1.

Diversity indices of viral g23 clone libraries recovered from the sediment sampling sites in the Pearl River Estuary.

Site	N	No. of OTUsa	H′	1/D	Chao1
A	150	96	4.3	75.0	252.6
B	150	81	4.1	59.2	201.5
C	155	58	3.7	35.1	75.3

N, number of clones sequenced.

^aOTU was defined as a 3% divergence at the DNA level.