Figure 2
From: Evidence for Rhythmicity Pacemaker in the Calcification Process of Scleractinian Coral

Relative calcification cycle of Acropora eurystoma under different light treatments over 48 hours, negative values represent dissolution.
(a) Ambient natural light (AMB). (b) Light/dark (LD). (c) Constant light (LL). (d) Constant darkness (DD). Asterisks denote significant differences from other time-point measurements within the same treatment, repeated measures ANOVA, with Bonferroni test (P < 0.05). Error bars represent standard error.