Cycling of Carbon, Nitrogen, Sulfur and Phosphorus in Terrestrial and Aquatic Ecosystems ILO Current research activities are leveraging the 24th ER Conference Current research activities are leveraging the GRID for the provision of generic and domain specific solutions and services for data management and knowledge discovery Main Question: G protein coupled receptors are involved in highly efficient and specific activation of signalling pathways sulfur and phosphorus Increased sulfur dioxide and nitrogen oxide emissions to the atmosphere in some areas are causing acid rain which appears to be affecting the productivity of some land and aquatic ecosystems