Current Condition and Proposed Solution to SARGASSUM Resources Use and Exploitation in the Area of Ban Than, Tam Hai Commune, Nui Thanh District, Quang Nam Province

Sea Areas of Ban Than in Tam Hai, Nui Thanh,Quang nam are where large reserves of Sargassum have been exploited. This study has identified six more common species of Sargassum : S. crassifolium J.Ag, S. binderi Sonder ex J.Agardh, S. berberifolium J. Agardh, S. cristaefolium C.Ag., S. herklotsii, S. serratum. Sargassum is distributed mainly in the area of Hon Dua, Hon Mang island and Ban Than bow. Shannon diversity index (H) ranges from 0.69 to 1.72,an average of 1,347; the index of the dominant level (Cd) changes from 0.19 to 0.556.287 on average.There is no totally dominant species in the study area. Methods of evaluating the coverage of Saito and Atobe (1970) are used in this study and show the value of Sargassum average coverage of 47.19%; average length of 80.98 ± 8.83 (cm), a great amount of fresh of 4183.77 ± 202, 21 (g/ m2)on average; a volume of 3.58 (ton/ ha). Sargassum collecting activities attracted 96% of the people with the exploitation output of 1820 tons / year