Figure 4

Photobiology of Euphyllia paradivisa. (a) Effective photosynthetic yield (\({\rm{\Delta }}F/{{\rm{F}}^{\prime} }_{{\rm{m}}}\)) of three fluorescence morphs of E. paradivisa in their natural habitat (45 m depth). Change (%) in the (b) maximal photosynthetic yield (Fv/Fm), (c) zooxanthellae density, and (d) chlorophyll a concentration under two light treatments: full sunlight (“PAR + UV”; light gray boxes) and PAR only (“PAR”; dark gray boxes), in three fluorescence morphs. Boxes represent the upper and lower quartile, center lines represent medians, and whiskers extend to data measurements that are less than 1.5*IQR away from first/third quartile. Outliers are represented by dots. Red lines represent a reference to the measurements taken prior to the light treatments.