Eutrophication is recognized as one of the factors contributing to the increasing proliferation of harmful algal blooms in coastal areas worldwide. The first Open Science Meeting on “HABs in eutrophic systems” was held in Baltimore in 2005. This second meeting is designed to bring experts together from around the world to review the current state-of-the-art knowledge on eutrophication and HABs, and to foster international collaboration on this critical global issue. Conference topics l Land-based nutrient pollution and coastal eutrophication 2 Dynamics of HABs in eutrophic coastal waters 3 Cyanobacteria blooms and eutrophication in freshwater 4 Physiology of HAB causative species in eutrophic systems 5 Comparative studies of HABs in eutrophic systems 6 Monitoring, modeling and prediction of HABs in eutrophic systems 7 Impacts of HABs in eutrophic systems and management strategies Scientific Organizing Committee Mingjiang Zhou (China), Co-convener Patricia M. Glibert (USA), Co-convener Paul Harrison (Hong Kong China Donald M. Anderson (USA) Edna Granéli (Sweden) J. Icarus Allen (UK) Michele Burford (Australia) Mingyuan Zhu (China) Zhiming Yu (China)