Fig. 4

A Total carotenoid content (TCC, μg mg DW⁻¹) in the S. subsalsa biomass vs rel_LEi (µmol m⁻² s⁻¹); B phycoerythrin/phycocyanin ratio (μg mg DW⁻¹ vs μg mgDW⁻¹) in the S. subsalsa biomass vs rel_LEi (µmol m⁻² s⁻¹); C phycoerythrin/phycocyanin ratio (μg mg DW⁻¹ vs μg mg DW⁻¹) in the S. subsalsa biomass vs DW biomass (g). Blue (BHL condition); Red (RHL condition); Green (GHL condition); White (WHL condition); grey (WLL condition). See Table 2 for rel_LEi information and calculation