Abstract
Seagrass habitats are crucial marine ecosystem component that affects the biophysical and chemical environment, providing nursery beds to various invertebrates, juvenile fish, and dugongs. This study focuses on mapping and monitoring changes in seagrass total above-ground biomass (STAGB) within the coastline of Peninsula Malaysia. The retrieval of the substrate leaving radiance was realized via was realized via Bottom Reflected Index (BRI) on Landsat ETM + visible bands. A strong relationship was established between BRI and seagrass biomass from in-situ samples (R2 > 0.8, p < 0.001), hence enable mapping and detection of changes in STAGB. Other related coastal changes caused by natural and human activities, namely total fish landing and erosion were also correlated with STAGB, to demonstrate the impacts of these variables on the habitat. The results offer inputs for coastal zone management, apart shall fast-track the achievements of target 14.2 of SDG 14.
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