Figure 5. Seasonal pattern of nutrient concentration, I_mix and phytoplankton biovolume measured in SCH and LAN (2011).

The colored bands above the graphs indicate the limitation type identified by the bioassays: where No is no limitation; Co is simultaneous or independent co-limitation; P is serial or single P limitation; N is serial or single N limitation; Light is light or co-limitation between light and nutrients. A–D) TN, DIN, TP and SRP; the horizontal lines mark the DIN and SRP concentrations below which N or P limitation are possible according to Maberly et al. [41]. E and F) I_mix, the horizontal line marks the light intensity below which in situ light treatments were conducted in the bioassays. G and H) Phytoplankton biovolume estimated according to Utermöhl [33].