Fig. 1
Underwater photographs of (a) an aposymbiotic A. poculata colony directly adjacent to a symbiotic A. poculata colony and (b) a mixed A. poculata colony. Photos: J. Dimond. (c) Median Symbiodinium psygmophilum density (# Symbiodinium cells·cm−2 coral) of colonies, with brown and white designations based on visual assessment in the field. Boxplots represent the 25th to 75th percentile range of Symbiodinium density among sample replicates for each season, while whiskers indicate the full range of sample values. Two-way ANOVA shows that both collection season and colony type affected S. psygmophilum density (see Additional file 1), while post hoc Tukey tests found that summer brown colonies had a higher S. psygmophilum density compared to those from any other season or colony type (asterisk). Mean indicated by dotted line where different from median