Comparative study on archaeal diversity in the sediments of two urban landscape water bodies - Fig 5

(a) Community bar-plot analysis shows the relative abundance of archaea in each sample at the phylum level. (b) Phylogenetic analysis of the top 10 most abundant genera. Maximum-likelihood tree constructed on the basis of 16S rRNA gene sequences. Bootstrap values were obtained from a search with 500 replicates. Each colour represents a different phylum.</p

Archaea are separable by the type of water bodies at the OTU level.

Statistical support for the PCoA clustering is provided by the analysis of similarity (ANOSIM). The corresponding shaded area in the group shows the 95% confidence interval with 1000 permutations.</p

The top 10 most abundant genera in all of the samples from the two lakes.

The top 10 most abundant genera in all of the samples from the two lakes.</p

Rank-abundance curves for the archaeal community in the sediments of lakes.

Rank-abundance curves for the archaeal community in the sediments of lakes.</p

Microbial OTU number and diversity index in different lakes.

The number of OTUs, the richness estimators Chao and Ace, and the diversity estimators Shannon and Simpson were calculated at a 3% distance. *P < 0.05, **P < 0.01. OTU, operational taxonomic unit.</p

Physicochemical characteristics of sediment samples from two lakes in this study.

Physicochemical characteristics of sediment samples from two lakes in this study.</p

Richness and diversity indexes relative to each part of the lake.

Richness and diversity indexes relative to each part of the lake.</p

Correlation heat map of the top ten genera and sediment properties.

The X and Y axes are environmental factors and genera, respectively. R values are shown in different colours; the right side of the legend indicates the colour range of the different R values. a: Aohai Lake; b: Kunming Lake. Significant values are shown as *P<0.001.</p

Unique and shared OTUs presented in the Kunming Lake and the Aohai Lake.

The overlapping portion indicates OTUs shared in different sample groups or sampling points; the nonoverlapping portion indicates OTUs unique to one sample group or sampling point, and the figure on the graph indicates the corresponding number of OTUs.</p

The relationship of archaeal community composition with the major environmental factors at the phylum level.

The environmental factors and different groups are indicated by red arrows and different shapes, respectively.</p