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29 January 2024 Lifeform-based seagrass species composition mapping of Pari Island using WorldView-2 multispectral imagery
Jennifer Wijaya, Pramaditya Wicaksono
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Proceedings Volume 12977, Eighth Geoinformation Science Symposium 2023: Geoinformation Science for Sustainable Planet; 129770Y (2024) https://doi.org/10.1117/12.3009770
Event: 8th Geoinformation Science Symposium 2023: Geoinformation Science for Sustainable Planet, 2023, Yogyakarta, Indonesia
Abstract
Seagrass beds play a crucial role in coastal ecosystems, providing various ecosystems services that are unique to each seagrass species. It is important to have spatial information on the composition of seagrass species in order to effectively manage and utilize seagrass beds. Unfortunately, the lack of such data hinders the optimal management of seagrass beds in Indonesia, as exemplified by the case of Pari Island in the Thousand Islands. To address this issue, WorldView-2 imagery, a multispectral remote sensing image with high spatial and spectral resolution, can be utilized to map composition of seagrass species. Therefore, the objectives of this study were twofold: (1) to map the composition of seagrass species and (2) to assess the accuracy of the resulting seagrass species composition map for selected areas of Pari Island, using WorldView-2 imagery. To achieve these objectives, a combination of image segmentation approaches and multispectral classification employing the random forest algorithm was employed. The findings revealed that the seagrass species composition in the designated areas of Pari Island, based on a life-form classification scheme, comprised Enhalus acoroides (Ea) covering an area of 0.04 km2, Enhalus acoroides-Thalassia hemprichii (EaTh) covering 0.21 km2, and Thalassia hemprichii-Cymodocea rotundata (ThCr) covering 0.28 km2. The overall accuracy (OA) of the seagrass species composition map was determined to be 60.76%.
(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.
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Jennifer Wijaya and Pramaditya Wicaksono "Lifeform-based seagrass species composition mapping of Pari Island using WorldView-2 multispectral imagery", Proc. SPIE 12977, Eighth Geoinformation Science Symposium 2023: Geoinformation Science for Sustainable Planet, 129770Y (29 January 2024); https://doi.org/10.1117/12.3009770
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KEYWORDS
Image segmentation
Random forests
Ecosystems
Remote sensing
Water
Education and training
Image classification
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