Fig. 2.

Concentrations of dimethylsulfoniopropionate (DMSP), dimethylsulfoxide (DMSO) and representative ¹H NMR spectra for (a–c) Acropora millepora and (d–f) Stylophora pistillata for the control (27 °C; white circles, dashed line) and treatments (32 °C; red circles, solid line) over time (days). Asterisks indicate significant differences between treatments at a given time point where *P < 0.05, **P < 0.01 and ***P < 0.001, and letters indicate significant differences between time-points for the heat-treated samples at P < 0.05. Averages (± SE) shown (n = 5)