Citizen Science-Based Coral Reef Monitoring in Trat Province, Eastern Gulf of Thailand
Abstract
Coral reefs in Trat Province, eastern Gulf of Thailand, are ecologically and economically important but increasinglythreatened by climate change, pollution, and human activities. This study employed a citizen science-based approach to assess reef condition, benthic invertebrates, and reef fish assemblages across seven sites around Koh Chang, Koh Mak, and Koh Kut. A total of 140 photographs and 7 underwater videos were collected by citizen scientists and verified by researchers. Results showed clear spatial variability: live coral cover was highest at Koh Phi (73.44%) and lowest at Koh Rayang Nok (10.12%). Macrobenthic invertebrate density peaked at Hin Luk Baht (6.96 ind./m²), dominated by Junceella sp. and Diadema setosum, while other sites supported lower densities. Reef fish density was highest at Hin Ao Salad, Koh Rad, and Hin Luk Baht (>1,600 ind./100 m²). Despite lower densities, Koh Kham maintained high species diversity. These findings demonstrate the value of citizen science in producing accurate and cost-effective datasets while enhancing community participation. Integrating public contributions with scientific verification provides a practicalmechanism for monitoring, conservation, and adaptive management of coral reefs. This study highlights how citizen science can strengthen ecological knowledge, raise awareness, and promote sustainable marine resource management in regions with limited research capacity.References
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