The title of my keynote is "Comprehensive monitoring and modeling approach for coastal ecosystem conservation under global and local environmental threats” Dr. Kazuo Nadaoka is professor and vice dean at Graduate School of Information Science and Engineering, Tokyo Institute of Technology. He was former Vice–President of Japanese Coral Reef Society (JCRS) and Chair of Coastal Engineering Committee in Japan Society of Civil Engineers (CEC/JSCE). His main research fields are coastal ecosystem conservation studies, integrated coastal zone management, and coastal oceanography & engineering. His recent research fields cover wide areas; 1) Analysis and prediction of multiple environmental stresses on coastal ecosystems, 2) Coastal ecosystem modeling for analyzing its dynamic response to various anthropogenic impacts and global environmental changes, 3) Monitoring and modeling of physical and bio-chemical processes in coastal zones, 4) Development and application of remote sensing methods to monitor coastal environments, 5) Reef connectivity study for establishing desirable MPA networks based on larval dispersal simulation and population genetics, 6) Establishing a decision support system for ICZM.