Figure 1.

Heat stress tolerances of 102 colonies exposed to a temperature stress event of long-term duration (30 days) and taxonomic composition of their associated Symbiodiniaceae. (a) Profile of CMI (rows) against accumulated heat stress (columns) expressed in degree heating weeks (DHW). (b) Symbiodiniaceae populations associated with sampled corals. Bars show post quality control (post-QC) ITS-2 sequences for each coral colony. For complete disclosure of the Symbiodiniaceae taxonomic resolution refer to electronic supplementary material, S3. (c) Bar chart for mean BMI ranked according to colonies position in the heat map in (a). Colours indicate RHT of the colonies, with relative low heat-tolerant colonies indicated in blue, relative high heat-tolerant colonies indicated in red, and unclassified colonies in grey. (Online version in colour.)