Seagrass beds are one of the most important ecological parts of marine resources because of habitat, nursery ground and nutrition utility of marine animals especially dugongs and sea turtles. All seagrass species could be used as a nutritional resource for the dugong. In January 2007, dugong calfs appeared unexpectedly at Ao Sattahip in the restricted area under the responsibility of Royal Thai Navy. Consequently, the dugong conservation Co-operative Programme was initiated in Sattahip area to continuously protect the dugong surviving in the Thai-water boundary. However, there is a little information of relationship between seasonal changes and seagrass beds. For this reason, this study was focused on the variety and distribution of seagrass beds resulting from the influence of seasonal changes in order to find the most appropriate nutritional resource, nursery ground and habitat areas for the dugong and consider the optimal environmental factors to promote the dugong conservation in Thailand.
CHANPEN WUTTHIVORAWONG, NOPADON KAKHAI AND SUPACHAI POLPOOL