Fig. 5.

Overall species richness in the mesocosms at the end of the study. Treatment effects on overall species richness in the mesocosms (data shown as proportional variation in species richness relative to the maximum observed richness among treatments) derived from samples of sponges, crustose coralline algae (CCA), and metabarcoding of metazoans from settlement tiles (ARMS), coral-associated microbes, water column-associated microbes, coral-associated algal endosymbionts, fleshy algae, and corals (n = eight datasets representing dozens of species of algae, hundreds of types of animals, and thousands of types of microbes). Box-plots show the median as center line, box limits are upper and lower quartiles, whiskers are 1.5x interquartile range, and there were no outliers. Treatment effects were not significant.