1. Rapid seagrass meadow expansion in an Indian Ocean bright spot
- Author
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Matthew Floyd, Holly K. East, Dimosthenis Traganos, Azim Musthag, James Guest, Aminath S. Hashim, Vivienne Evans, Stephanie Helber, Richard K. F. Unsworth, and Andrew J. Suggitt
- Subjects
Medicine ,Science - Abstract
Abstract The areal extent of seagrass meadows is in rapid global decline, yet they provide highly valuable societal benefits. However, their conservation is hindered by data gaps on current and historic spatial extents. Here, we outline an approach for national-scale seagrass mapping and monitoring using an open-source platform (Google Earth Engine) and freely available satellite data (Landsat, Sentinel-2) that can be readily applied in other countries globally. Specifically, we map contemporary (2021) and historical (2000–2021; n = 10 maps) shallow water seagrass extent across the Maldives. We found contemporary Maldivian seagrass extent was ~ 105 km2 (overall accuracy = 82.04%) and, notably, that seagrass area increased threefold between 2000 and 2021 (linear model, + 4.6 km2 year−1, r2 = 0.93, p
- Published
- 2024
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