Rahim S, Baderan DWK, Hamidun MS. 2017. The density, composition and mangrove forest habitat in coastal areas of Torosiaje Jaya Village, Gorontalo, Indonesia. Bonorowo Wetlands 7: 38-42. The ecosystem of mangrove is a quite good ecosystem which is located in Torosiaje Jaya Village of Popayato Subdistrict, Pohuwato District, Gorontalo Province, Indonesia. This because of the beach in the coastal of Torosiaje Jaya Village is a gently sloping beach. Further, this beach has deposited sediment and it is formed a promontory grave that causes that mangrove in that region grows large and relatively fertile. In addition, the mangrove which is located in Pohuwato has fairly high various species. One of them is found from Avicenniaceae family namely Avicennia marina (Forsk.) Vierh. This study aims to (i) obtain the information about the density of the mangrove; (ii) to determine the composition of mangrove species in coastal areas of Torosiaje Jaya Village; and (iii) to know the habitat of the species which is found in coastal areas Torosiaje Jaya Village. Besides, the data were collected by purposive sampling. Moreover, for the measurement of density, distribution type, diameter trees, and mangrove vegetation height use a distance method (Point-Centered Quarter Method). Further, the composition types of views are based on the number species are found, and to obtain the data of the habitat conditions of the species which has discovered is using a direct observation in the field by a tree and laboratory test sample originating from soil samples in the study sites. Moreover, the result of this study finds the four species of tree which dominates the mangrove in Torosiaje Jaya Village. They are Bruguiera gymnorrhiza, Rhizophora mucronata, Rhizophora apiculata, and Rhizophora stylosa with a density value of 51.55 trees/3 ha with an average distance of 581.94 m/tree. B. gymnorrhiza and R. mucronata are species that dominate in the region due to supply mud as suitable habitat with its growth, besides it is affected by the substrate of mangroves in the Torosiaje Jaya Village it is also affected by salinity and temperature. Further, the data which have obtained, they can be used in a management of mangrove forest which located in the coastal of Torosiaje Jaya Village and they can also be data in mangrove conservation efforts in order to reduce the effects of global warming.