Fig. 2

Dynamics of bacterial groups measured by the 16S rRNA gene sequences in blooms. The results show the dominant group change in early- (stage I) and mid- (stage II) stationary phase of the bloom at the center (C) and peripheral (P) sites with particle-associated (> 3 μm) or the free-living (0.2–3 μm) strategies (a). The bacteria belonging to the six most abundant classes are shown in the phylogenetic tree. The taxonomic information is the name associated with their best sequence match within the EZbiocloud database (see the “Methods” section). The size of the gray solid circle indicates the relative abundance of each operational taxonomic unit at the genus level. The grass green, rosy, and indigo sections indicate the proportion of species within their corresponding genus. Principal component analysis of bacterial communities (289 genera) between stage I with stage II were divide into three categories (b). Twelve genera with decreased (orange solid circle) or increased (red solid circle) relative abundance represent relatively greater changes in the relative abundances compared to others (green circles enclosed by the ellipse)