Our results generally showed that in the investigated microbial community autotrophic component was dominant over the heterotrophic component during the winter season, while dominance of heterotrophic component in the microbial community was observed during the warmer seasons. Further, within the prokaryotic community heterotrophic prokaryotes were mostly dominant throughout the studied area. It is also important to point out that autotrophic prokaryotic community was mostly dominated by the Synechococcus biomass, and it was also observed that the biomass of Prochlorococcus was higher in the open sea area in comparison with the coastal site (Figure 8)
