DMS/DMSP Emissions from Coral Reefs
The role of coral reefs in the production of the algal secondary metabolite dimethylsulphoniopropionate (DMSP) and the climate-cooling gas dimethylsulphide (DMS) is poorly understood. However, recent studies have discovered that mucus exuded from corals contains the highest concentration of DMSP and DMS recorded in the marine environment. Marine emissions of volatile sulphur are almost exclusively DMS. As a result, the biological production of DMS is of great importance for the biogeochemical cycling of sulphur and since DMS affects the radiative budget of the Earth it is also relevant for global climate. The CRRU has recently commenced research into the role of DMSP on coral reefs.
Isoprene Production in the Tropical Marine Environment
Isoprene is a volatile organic compound produced by many plants. It is one of the most reactive hydrocarbons naturally emitted, and can alter climatology significantly: increasing the residence time of greenhouse gases in the atmosphere and inducing both ozone and cloud formation. Isoprene is not produced by all plants, and its ecophysiological role is in reducing the damage caused by episodes of high temperature, light and ozone. The CRRU is therefore undertaking research to discover which key functional groups of photosynthesising organisms are isoprene producers, and to study the mechanisms behind its emission, and to investigate possible roles in coral bleaching and acclimation.
