The model management of small islands, based on geometric coral reefs could be used in the determination of marine conservation area. These methods try to see target fish as predictive variables, coral reefs as a indicator variables and geometric reef as a leverage variables that used as a determination of marine conservation unit area. The objectives of this research were to reveal the geometry model of coral reef small islands as a model framework in the determination of the artisanal fisheries conservation and ecosystem-based planning. The results showed that, the composition of target fish abundance varies between 208 – 732 individual/250m, the hard corals cover is 28.40 – 50.92% and geometric coral reefs consist of four models of triangle, circle, kidney and rectangular reefs. Simulation results showed the similarity index (morpho-structural groups) based on the percentage of coral cover, which formed the model, generates three main groups with Mahoro Islands 1 and 2 show the highest conservation value. The model geometric approach of small reef islands is one way determination of conservation units, not as a condition exclusively in making decisions about policy or conservation zoning. Instead of this method of estimating coral reef and target fish class as a unit in the placement of conservation, so it needs no other combinations are associated with other conservation targets. These conservation targets can be combined with the presence of rare species (endangered species), socioeconomic fishing, transportation activity and physical factors in determining the status of marine conservation area.
Keywords: geometric, coral, species, conservation