Comparative Analysis of Benthic Ecosystem Mapping Using Allen Coral Atlas and Sentinel-2 in Pagai Islands
DOI:
https://doi.org/10.29244/coj.v9i2.363710Keywords:
Allen Coral Atlas, benthic ecosystems, Mentawai Islands, Sentinel-2Abstract
Benthic ecosystem is a crucial component of coastal ecosystems, making its protection essential for maintaining ecosystem health. This study presents a comparative analysis of benthic mapping in the Pagai Islands, West Sumatra Province. It utilizes two different satellite imagery sources: the Allen Coral Atlas, derived from Planet Labs' Dove satellites with a spatial resolution of 3-5 meters, and Sentinel-2 imagery from ESA's Copernicus program, with a resolution of 10 meters, both acquired from 2024. The Allen Coral Atlas data were processed using Google Earth Engine and visualized in QGIS, while Sentinel-2 data were processed in Snap and QGIS, covering the same period. In situ validation used secondary field data from six stations across North and South Pagai Islands. This data was used to validate seagrass, mangrove and coral reef presence and identify species in their natural habitats. The analysis revealed strong similarity between both maps, particularly for seagrass habitats, though minor discrepancies occurred in cloud-covered and sediment-affected areas. This highlights the reliability of both datasets for benthic mapping, with greater potential than simple validation. They can be applied to track annual fluctuations in seagrass distribution, monitor mangrove extent and recovery, and evaluate coral reef area and degradation. Such analyses provide robust support for ecological research and management in the dynamic Pagai Islands.
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References
Abdul-Rahman, A., & Pilouk, M. (2008). Spatial data modelling for 3D GIS. In Spatial Data Modelling for 3D GIS. https://doi.org/10.1007/978-3-540-74167-1
Ambomasse, Y. M., Irawan, A., & Paputungan, M. S. (2024). The Estimation of Carbon Stock in Seagrass Biomass of Kedindingan Island, East Kalimantan. Coastal and Ocean Journal, 8(1), 1–14.
Ampou, E. E., Radiarta, I. N., Hanintyo, R., & Andrefouet, S. (2018). Benthic Habitat on Coral Reef Ecosystem in Menjangan Island. Jurnal Kelautan Nasional, 13(3). https://doi.org/10.15578/jkn.v13i3.6655
Anggraeni, D., Fauzi, M. N., & Ngesti H., C. N. (2019). Pemetaan Sebaran Padang Lamun Menggunakan Citra Satelit Landsat 8 Di Kepulauan Tanimbar Kabupaten Maluku Tenggara Barat Provinsi Maluku. Seminar Nasional Geomatika, 3, 871. https://doi.org/10.24895/sng.2018.3-0.1078
Arselan, A., Haryanto, R. R. R., Tanaya, K. M. J., Fitri, R. R., Sianturi, L. N. E., Azzahra, R. Y., Putra, C. A. W., Abimanyu, D. H., & Sunuddin, A. (2025). Diversity and community structure of seagrass ecosystem at Menjangan Island, West Bali National Park. BIO Web of Conferences, 168, 1–12. https://doi.org/10.1051/bioconf/202516801008
Lyons, M. B., Roelfsema, C. M., Kennedy, E. V., Kovacs, E. M., Borrego-Acevedo, R., Markey, K., Roe, M., Yuwono, D. M., Harris, D. L., Phinn, S. R., Asner, G. P., Li, J., Knapp, D. E., Fabina, N. S., Larsen, K., Traganos, D., & Murray, N. J. (2020). Mapping the world’s coral reefs using a global multiscale earth observation framework. Remote Sensing in Ecology and Conservation, 6(4), 557–568. https://doi.org/10.1002/rse2.157
Belinda, C. A., Pribadi, R., & Ulumuddin, Y. I. (2022). Konektivitas Mangrove dan Terumbu Karang Berdasarkan Komunitas Ikan Karang (Studi Kasus: Kepulauan Mentawai dan Belitung). Journal of Marine Research, 11(4), 738–751. https://doi.org/10.14710/jmr.v11i4.32346
Carpenter, S., Byfield, V., Felgate, S. L., Price, D. M., Andrade, V., Cobb, E., Strong, J., Lichtschlag, A., Brittain, H., Barry, C., Fitch, A., Young, A., Sanders, R., & Evans, C. (2022). Using Unoccupied Aerial Vehicles (UAVs) to Map Seagrass Cover from Sentinel-2 Imagery. Remote Sensing, 14(3), 477. https://doi.org/10.3390/rs14030477
Congalton, R. G., & Green, K. (2010). Assessing the Accuracy of Remotely Sensed Data: Principles and Practices. In The Photogrammetric Record (Second Edi, Vol. 25, Issue 130). CRC Press. https://doi.org/10.1111/j.1477-9730.2010.00574_2.x
CoreMap-LIPI. (2014). Panduan monitoring padang lamun. In Pusat Penelitian Oseanografi Lembaga Ilmu Pengetahuan Indonesia (Issue 1).
Dimara, A., Hamuna, B., & Bay, H. (2020). Pemanfaatan Citra Satelit Sentinel-2A Untuk Pemetaan Habitat Dasar Perairan Dangkal ( Studi Kasus : Teluk Humbolt , Kota Jayapura ). m(2014). https://doi.org/10.31957/acr.v3i1.1213
Elma, E., Gaulton, R., Chudley, T. R., Scott, C. L., East, H. K., Westoby, H., & Fitzsimmons, C. (2024). Evaluating UAV-based multispectral imagery for mapping an intertidal seagrass environment. Aquatic Conservation: Marine and Freshwater Ecosystems, 34(8), 1–14. https://doi.org/10.1002/aqc.4230
Gao, B.-C. (1996). NDWI A Normalized Difference Water Index for Remote Sensing of Vegetation Liquid Water From Space. Journal of Experimental Education, 23(4), 359–363. https://doi.org/10.1080/00220973.1955.11010524
Green, E. P., Mumby, P. J., Edwards, A. J., & Clark, C. D. (2000). Remote Sensing Handbook for Tropical Coastal Management. In Coastal Management Sourcebooks 3 (Issue April).
James, R. K., Keyzer, L. M., van de Velde, S. J., Herman, P. M. J., van Katwijk, M. M., & Bouma, T. J. (2023). Climate change mitigation by coral reefs and seagrass beds at risk: How global change compromises coastal ecosystem services. Science of the Total Environment, 857(October 2022), 159576. https://doi.org/10.1016/j.scitotenv.2022.159576
Jones, B. L. H., Coals, L., Cullen-unsworth, L. C., & Lilley, R. J. (2025). Mapping global threats to seagrass meadows reveals opportunities for conservation Mapping global threats to seagrass meadows reveals opportunities for conservation.
Kalacska, M., & Sanchez-Azofeifa, G. A. (2008). Hyperspectral remote sensing of tropical and subtropical forests. Hyperspectral Remote Sensing of Tropical and Sub-Tropical Forests, 1–323. https://doi.org/10.1201/9781420053432
Kennedy, E. V., Roelfsema, C. M., Lyons, M. B., Kovacs, E. M., Borrego-Acevedo, R., Roe, M., Phinn, S. R., Larsen, K., Murray, N. J., Yuwono, D., Wolff, J., & Tudman, P. (2021). Reef Cover, a coral reef classification for global habitat mapping from remote sensing. Scientific Data, 8(1), 1–20. https://doi.org/10.1038/s41597-021-00958-z
Komatsu, T. (2015). A manual for seagrass and seaweed beds distribution mapping with satellite images. March, 46.
Li, J., Knapp, D. E., Schill, S. R., Roelfsema, C., Phinn, S., Silman, M., Mascaro, J., & Asner, G. P. (2019). Adaptive bathymetry estimation for shallow coastal waters using Planet Dove satellites. Remote Sensing of Environment, 232(July), 111302. https://doi.org/10.1016/j.rse.2019.111302
Manuputty, A., Lumban Gaol, J., & Agus, S. B. (2015). Seagrass Mapping Based on Satellite Image Worldview-2 by Using Depth Invariant Index Method. ILMU KELAUTAN: Indonesian Journal of Marine Sciences, 21(1), 37. https://doi.org/10.14710/ik.ijms.21.1.37-44
McKenzie, L., Campbell, S., & C, R. (2003). Seagrass-Watch: Manual for Mapping and Monitoring Seagrass Resources (2nd ed., Issue April 2003). Department of Primary Industries Queensland.
Mutmainah, H., & Putra, A. (2018). Potensi sumber daya dan kerentanan pesisir pulau pagai utara kabupaten kepulauan mentawai.
Nur, S., & Nurdjaman, S. (2025). Temporal Assessment of Seagrass Degradation on Singkep and Lingga Islands , Riau Islands Province , Indonesia (2016-2020). Coastal and Ocean Journal, 9(1), 20–33. https://journal.ipb.ac.id/index.php/coj/article/view/61813
Nur, S., Nurdjaman, S., Dika Praba P Cahya, B., & Haidar Dzar Al-Ghifari, K. (2021). Integrating sentinel-2 spectral-imagery and field data of seagrass coverage with species identification in the coastal of Riau Islands, Indonesia. Borneo Journal of Marine Science and Aquaculture (BJoMSA), 5(2), 78–82. https://doi.org/10.51200/bjomsa.v5i2.2710
Roca, M., Lee, C. B., Pertiwi, A. P., Blume, A., Caballero, I., Navarro, G., & Traganos, D. (2025). Subtidal seagrass and blue carbon mapping at the regional scale: a cloud-native multi-temporal Earth Observation approach. GIScience and Remote Sensing, 62(1). https://doi.org/10.1080/15481603.2024.2438838
Roelfsema, C. M., Lyons, M., Murray, N., Kovacs, E. M., Kennedy, E., Markey, K., Borrego-Acevedo, R., Ordoñez Alvarez, A., Say, C., Tudman, P., Roe, M., Wolff, J., Traganos, D., Asner, G. P., Bambic, B., Free, B., Fox, H. E., Lieb, Z., & Phinn, S. R. (2021). Workflow for the Generation of Expert-Derived Training and Validation Data: A View to Global Scale Habitat Mapping. Frontiers in Marine Science, 8(March), 1–13. https://doi.org/10.3389/fmars.2021.643381
Serge, A., Maële, B., Stéphane, G., & Antoine, G. (2024). Evaluation of the Allen Coral Atlas benthic habitat map product for New Caledonia using representative habitat observations from a multi-species fishery assessment. Coral Reefs, 43(3), 523–540. https://doi.org/10.1007/s00338-024-02481-0
Simpson, J., Davies, K. P., Barber, P., & Bruce, E. (2024). Mapping fine-scale seagrass disturbance using bi-temporal UAV-acquired images and multivariate alteration detection. Scientific Reports, 14(1), 1–16. https://doi.org/10.1038/s41598-024-69695-8
Thomasberger, A., Nielsen, M. M., Flindt, M. R., Pawar, S., & Svane, N. (2023). Comparative Assessment of Five Machine Learning Algorithms for Supervised Object-Based Classification of Submerged Seagrass Beds Using High-Resolution UAS Imagery. Remote Sensing, 15(14). https://doi.org/10.3390/rs15143600
Umawaitina, A., Billy, I., Wagey, T., Sinjal, C. A. L., Inneke, F. H., Tilaar, S. O., Kumampung, D. R. H., Kepulaun, K., & Maluku, P. (2023). Struktur Komunitas Padang Lamun Di Perairan Desa Bajo Kecamatan Sanana Utara Kabupaten Kepulauan Sula Provinsi Maluku Utara. 11(2), 160–169.
Wabnitz, C. C., Andréfouët, S., Torres-Pulliza, D., Müller-Karger, F. E., & Kramer, P. A. (2008). Regional-scale seagrass habitat mapping in the Wider Caribbean region using Landsat sensors: Applications to conservation and ecology. Remote Sensing of Environment, 112(8), 3455–3467. https://doi.org/10.1016/j.rse.2008.01.020
Wan, D., & Nur, S. (2023). Research Progress on Degradation Factors and Restoration Technologies of Seagrass Beds. OAJRC Environmental Science, 4(1), 40–44. https://doi.org/10.26855/oajrces.2023.06.006
Wen, W., Bambic, B., & White, A. (2021). Allen Coral Atlas For Coral Reef Management In Indonesia: A Brief Review. Academia Letters, November. https://doi.org/10.20935/al4145
White, E., Mohseni, F., & Amani, M. (2021). Coral Reef Mapping Using Remote Sensing Techniques and a Supervised Classification Algorithm. Advances in Environmental and Engineering Research, 02(04), 1–1. https://doi.org/10.21926/aeer.2104028
Zhang, J., Liu, C., Ling, J., Zhou, W., Wang, Y., Cheng, H., Huang, X., Yang, Q., Zhang, W., Liang, T., Zhang, Y., & Dong, J. (2025). Revealing the potential of biochar for heavy metal polluted seagrass remediation from microbial perspective. Ecotoxicology and Environmental Safety, 292(October 2024), 117991. https://doi.org/10.1016/j.ecoenv.2025.117991
