Fig. 1

Cell counts and taxonomic dynamics during the four incubations. A Cell counts of heterotrophic bacteria, Synechococcus, heterotrophic flagellates (HF), and phototrophic flagellates (PF) conducted by epifluorescence microscopy. The background of the plots is colored by the different incubation states of the HF community (“lag”, “growth”, and “decline”). White dots in HF curves represent time points from which we obtained metatranscriptomic data. B Relative read abundance of the main taxonomic eukaryotic groups during the incubations as seen by 18S-V4 mTags. Groups are divided into 2 plots by their overall dynamics: increasing (upper panels) or decreasing (bottom panels) their relative abundance