Small-island mangrove ecosystems are highly vulnerable to degradation because of their limited land area, dependence on coastal resources, and increasing human pressures. This study investigated the drivers, spatial patterns, and spatial determinants of mangrove degradation on Tanakeke Island, Indonesia, using high-resolution SPOT 6 and 7 imagery, Moran’s I, Local Indicators of Spatial Association (LISA), and spatial regression analysis. Two dominant degradation forms were identified: small patches and localized bare areas associated with gradual, selective logging, and large pond-clustered conversions, reflecting a systematic landscape-scale expansion. Spatial regression showed that logging-related degradation was only weakly explained by spatial variables, suggesting a more substantial influence from non-spatial drivers, such as socioeconomic factors. In contrast, pond conversion exhibited strong spatial dependence, primarily driven by accessibility to infrastructure and settlements. These contrasting patterns highlight the need for differentiated and coordinated management strategies. Localized logging should be addressed through community-based monitoring and regular patrols. Aquaculture expansion requires stricter land-use regulations and continuous spatial monitoring. By linking the spatial patterns of degradation with their underlying drivers, this study provides a spatially explicit basis for adaptive coastal management of small-island mangrove systems.
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