Similarity matrix of trace-element sequences for five cohorts of C. Viridis.

Each cell contains the mean similarity (± standard deviation) of sequences that roughly correspond to the first two-thirds of the PLD. Row headings provide each cohort's name and back-calculated hatch date. Column headings provide, in parentheses, the cohort's PLD and sample size. The 5th & 95th percentiles of the expected (by chance) mean for cohort similarity are presented in the far right column (see Methods for details). Highlighted are similarity values that fall above the expected 95th percentile (right figure of the far right column). All cohorts of C. viridis were collected from a single coral colony, at the IUI.