The coral reef resources at Biak Island were identified and examined using ground truth data collected in July 2007 and Alos imaging analysis with a 10 m resolution recorded on May 25, 2010, with the assumption that nothing has changed for the past three years. The work uses glint removal and depth invariant index techniques to build coral reef ecosystem groups by combining 59 field data with Alos image data. Live corals, dead corals, a mixture of both, and sand are the four classes. The algorithm, which is made up of three visible bands, works best in clear water rather than turbid water. As a result, vegetation covering, as well as seagrass, seaweed, and macroalgae that are only present in small amounts and are frequently covered by fine sand materials and linked with turbid water, is overlooked. Corals on Biak Island are spatially narrow, 50 to 150 m broad, covering an area of 1031 ha., with live corals dominating 38 ha. (3 percent), and 50 – 700 m wide, covering an area of 2161 ha., with live corals dominating 215 ha (9 percent ). The powerful waves from the Pacific Ocean are thought to be preventing corals in the north from thriving. The goal of this study is to create a map of the coral reef ecosystem on Biak Island, Indonesia, which is located between 135o48'E and 136o28'E; 0o41'S and 1o15'S.
Author (s) Details
Suyarso
Research Centre for Oceanography - Indonesian Institute of Sciences, Jakarta, Indonesia.
View Book :- https://stm.bookpi.org/MAGEES-V5/article/view/2404
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