Fig. 2

a, b Chlorophyll and c, d P700 fluorescence of red tide diatom S. costatum, red tide dinoflagellate A. carterae, P. donghaiense, and K. mikimotoi, model diatom P. tricornutum, T. pseudonana and model dinoflagellate D. Symbiodinium under a, c mFL after the addition of 1 min of bright light (800 μmol photons m^− 2 s^− 1) to every 5 min of low light (80 μmol photons m^− 2 s^− 1). b, d sFL after the addition of 1 min of stronger light (2000 μmol photons m^− 2 s^− 1) to every 5 min of low light (20 μmol photons m^− 2 s^− 1). The experiments have three replicates