Figure S2: Concentration of chlorophyll a (mg L−1) after 12-hour light-exposure of the three microalgae under three irradiance levels (0 µmol photons m−2s−1, 40 µmol photons m−2s−1 and 120 µmol photons m-2 Vertical bars denote standard deviation from triplicate samples. Different letters indicate significant (p < 0.01) differences comparing different chl a amongst three microalgal species under different irradiances. The significance is indicated through homologous grouping using Factorial ANOVA followed by post-hoc Tukey HSD test.