Fig. 2 in Dinophyta Characterise Nitrogen Scarcity More Strongly than Cyanobacteria in Moderately Deep Lakes

Fig. 2. PCA of lakes ordinated in relation to mean growth season composition of phytoplankton, expressed as proportion of biovolume. a – phytoplankton divisions, λ1 = 0.377, λ2 = 0.237; b – phytoplankton species, λ1 = 0.418, λ2 = 0.198, key to species shown in Table 4. Nutrient ratios are TN:TP ratios and symbols are shaded to show mean TN:TP ratios at each site.