Date: 20-24 October, 2025

Venue: Bangkok & ChonBuri, Thailand

Reporter: Yongqi LIU, Coastal-SOS International Project Office, State Key Lab of Marine Environmental Science (Xiamen University), China

Infographer: Suriyapong Kumsopar, Research Assistant, Chemical Oceanography Laboratory, Department of Marine Science, Chulalongkorn University, Bangkok, Thailand

The coastal ocean is characterized by abundant biological resources and diverse ecosystems, serving as the area where multi-sphere interactions—such as those between the ocean, land, and atmosphere—within the Earth's surface system are most intense. It supports the most frequent and dynamic socio-economic activities, making it a critical intersection of natural ecology and human ecology. As a multidimensional complex system, it governs the lifeline of sustainable development for both regional ecosystems and human society.

The Upper Gulf of Thailand is a key site for multidisciplinary research focused on addressing complex coastal challenges, particularly eutrophication, hypoxia, and ocean acidification. Despite its importance, a comprehensive understanding of the physical, biogeochemical, and socioeconomic processes governing this region remains limited. To address this knowledge gap, we plan to convene the "Eutrophication and Hypoxia in the Upper Gulf of Thailand: Assessment, Management, and Early Warning System Development" in Bangkok, Thailand, on 20-24 October 2025, to enhance scientific research exchange and cooperation in this field and to keep pace with international progress.