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.

摘要

海草栖息地是影响生物物理和化学环境的重要海洋生态系统组成部分，为各种无脊椎动物、幼鱼和儒艮提供育苗床。本研究的重点是绘制和监测马来西亚半岛海岸线内海草总地上生物量 (STAGB) 的变化。通过 Landsat ETM + 可见波段上的底部反射指数 (BRI) 实现了基板离开辐射的恢复。BRI 与来自原位样品的海草生物量之间建立了密切的关系（R ²> 0.8, p < 0.001)，因此可以映射和检测 STAGB 的变化。由自然和人类活动引起的其他相关海岸变化，即鱼类总着陆和侵蚀也与 STAGB 相关，以证明这些变量对栖息地的影响。结果为沿海地区管理提供了投入，除此之外，还将加快实现可持续发展目标 14 的具体目标 14.2。