Figure 7
Alignment plots from co-occurrence and graph alignment analyses illustrate differences in ecological patterns and relationships between low N2 fixation + Low NCP and high N2 fixation + high NCP subnetworks. (a) Visualization of network relationships within and contrasted between Subnetwork 1 (2015 MAB, high N2 fixation) and Subnetwork 3 (open ocean, low N2 fixation) (b) and Subnetwork 2 (2015 + 2017 MAB, high N2 fixation) and Subnetwork 3 (open ocean, low N2 fixation). The leftmost pair of identical axes represent taxa belonging to the first subnetwork, with edges between the left two axes signifying significant co-occurrence relationships between taxa within the subnetwork. The rightmost axes and lines similarly represent taxa from the second subnetwork and within-network co-occurrence relationships. Edges between the two networks represent aligned taxa, where an OTU shares a similar taxonomic identity (sequence similarity) and a high degree of network topological similarity with an OTU in the other subnetwork. Alignments suggest that OTUs fill similar ecological roles within their respective subnetworks. Circular nodes represent individual OTUs, colored and grouped at the third taxonomic rank. Larger circle diameter indicates higher network importance (centrality). Taxa are ordered by centered log-ratio (CLR) normalized abundance, with higher-abundance genera placed further from the origin. Figure produced using HiveAlign (https://univ-nantes.io/erwan.delage/HiveAlign).
