Figure 4.

Spatial distribution of OTUs across the Baltic Sea. (A) Alphaproteobacteria, (B) Gammaproteobacteria, and (C) Flavobacteriia. The Venn diagrams in the center of each panel depict the number of OTUs unique or shared between the stations where S. marinoi cluster 1 (dark green) or S. marinoi cluster 2 (light green) dominated. Small boxes depict how many OTUs of each major taxon that were detected at each station (numbers include OTUs that occur at single or multiple stations). Only OTUs with relative abundances >0.1% are included.