Fig. 4

(a) The cladogram diagram shows the eukaryotic plankton order displaying significant differences in the two groups. Red and green indicate different groups, species classification being shown at the level of phylum, class, order from the inside to the outside. (b) Species exhibiting significant difference with an LDA score greater than the estimated value; the default score is 4.0. The length of the histogram represents the LDA score; i.e., the degree of influence of species with significant differences between groups.