Figure 4

From: Aquatic urban ecology at the scale of a capital: community structure and interactions in street gutters

Figure 4

Network analyses of microbiomes in Paris. (a) Bipartite network of 104 samples from non-potable sources and street gutter mats of Paris and their most abundant OTUs. Named nodes are samples (GM_001 to GM_90, Gutter Mats; FW_001 to FW_006, Flow Waters; RW_001 to RW_008, Raw Waters), and unnamed nodes are OTUs. The OTUs are connected to the sampling site at which they were identified. The node size is proportional to the weight of links connected to this node. Only the OTUs containing at least 50 sequences are presented. The network was generated using Gephi 0.9.1 with the Force Atlas 2 algorithm. (b) Map of Paris showing the different clusters or singletons identified by occurrence network analyses. Bar plots represent the relative abundances of the five main taxonomic groups (covering 74.0% of the total abundance) of the ten largest clusters (no abundance filter). The bar plot abbreviations are as follows: D, Diatoms; A, Alveolata; R, Rhizaria; OS, other Stramenopiles; F, Fungi.