4. Discussion
As we hypothesized, significant seasonal variations on phytoplankton
biomass (Fig. 5) and community structure (Figs. 6–8) were observed
in the central area compared to the coastal area. Indeed, the
YSWC and YSCWM seemed to be important players in determining
the spatial and temporal patterns of phytoplankton biomass and community
structure in the central YS.