Figure 2.

Coral surface area- normalised DMS concentrations (pmol/cm²) in the outflow from triplicate coral experimental flasks (A–C) and photosynthetic performance (D–F) of coral before, during and after air exposure. Grey shaded areas = coral submersed (Stage I and III), white areas = coral exposed to air (Stage II). Acropora cf. horrida⁴⁰⁰ (A,D), Porites cylindrica⁴⁰⁰ (B,E) and Seriatopora hystrix¹⁰⁰ (C,F). Experiments were run in triplicate and replicate flasks are distinguished by different symbols (Flask 1 = diamonds, Flask 2 = squares, Flask 3 = triangles). Error bars on Panel A represent the total measurement error which includes error associated with 5 min-averaged 0.25 Hz API-CIMS measurements (see Methods), coral surface area measurements and flow rate of culture aeration. Superscript numbers = light acclimation levels in μmol m⁻² s⁻¹. * = discrete measurements made by GC-FPD.