Figure 2. Algal densities and chlorophyll pigments for Acropora millepora in the laboratory.

Boxplots showing the significant effects of (a, c, e) temperature on zooxanthellae densities and chlorophyll a and c₂, and (b, d, f) symbiont genotype on zooxanthellae densities and chlorophyll a and c₂, in Acropora millepora explants during a laboratory growth experiment. White boxes represent colonies with type C2 symbionts or those at 23°C and grey boxes represent colonies with type D symbionts or those at 29°C. Box boundaries represent the 75th and 25th percentiles. Thick lines within the boxplots represent the mean and thin lines represent the median. Whisker bars above and below the boxes represent the 95th and 5th percentiles. Missing and out of range values are not shown. Dots represent data that fall outside the confidence limits.