Fig. 5
Variation partitioning of genomic differentiation for 113 plankton taxa. A PCA was performed on the proportion of variation explained by each parameter over the 113 plankton taxa. The colour corresponds to Pearson’s correlation between the coordinates of species for a component and the variation explained by the parameters (p-values: * < 0.05, ** < 0.01, *** < 0.001, **** < 0.0001). The size of the circles represents the relative contribution (i.e. the ratio of the variable cos2 on the total cos2 of the component) of each variable to each component. B t-SNE and k-means (K = 8) clustering. Each dot represents a taxon. Each colour corresponds to a defined cluster obtained by k-means. The names of the clusters are linked to the following figure C Distributions of variation are explained by each factor by cluster and the taxonomic composition of each cluster. The boxplot colours are the same as in the previous figure. The asterisk * on the top of boxplots corresponds to parameters that significantly contribute the most to the genomic differentiation of the taxa included in the cluster, according to a pairwise Wilcoxon test (p-value < 0.05)