Fig. 8
Sankey diagrams of the 20 strongest positive and negative environmental variable → microbial interactions at the different sampling sites and size fractions. Positive (A–D) and negative (E–H) interactions are represented by green and red flow edges, respectively. Microbes are grouped at the class level by colours explained in respective figure legends below the positive and negative interaction diagrams. Chla - Chlorophyll a, NOx - Nitrate + Nitrite, PO4 - Phosphate, Sal - Salinity, SiO - Silicate, Temp - Temperature