Fig. 3

Cross-community analysis identifies connectivity structure at the level of sub-communities. A Community-to-community connections are represented by chords, weighted to the number of connections. Communities are color-coded in the same way as Fig. 2, and chords are color-coded by the sending community. B Raw number of sub-community to sub-community connections are shown at each intersection, organized so that each row depicts the number of connections a sub-community sends to each other sub-community, and its corresponding column depicts the connections it receives from each other sub-community. Sub-communities that demonstrate higher connection frequencies than chance are highlighted in pink (p < 0.05). Sub-communities are defined in part by their high connectivity within themselves, so their significance is not highlighted here (see Fig. 2). C Representation of significant connection frequencies between sub-communities is shown in B. Color of connections indicate the origin sub-community of the connection