Table 1. Diversity index of MCG lineages in different habitats.

Habitat	Nib	N	Shannon-Wiener	PD	PSV
Peat sediment	4	472	3.42 ± 0.61	1.76 ± 0.47	0.56 ± 0.13
Soila	2	130	1.12	0.21	0.86
Hot spring	2	7	2.69	0.30	0.36
Lagoon	13	217	1.87 ± 1.19	0.59 ± 0.47	0.61 ± 0.21
Mangrove soil	4	433	3.68 ± 0.77	2.96 ± 1.08	0.48 ± 0.02
Estuary sediment	3	197	3.56 ± 0.23	2.45 ± 0.40	0.47 ± 0.05

Nib: number of libraries or studying sites.

N: number of clones.

^aLibraries containing only one OTU were excluded from the calculation of the mean biodiversity index.