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<p>Coastal geoheritage in West Africa remains under-documented and under-managed despite rapid shoreline change and growing geotourism demand. We develop a replicable, risk-informed framework to evaluate and prioritize geosites in Popenguine, Senegal. We combine stratigraphic and structural field analysis, multi-criteria geohazard mapping (slope, lineaments, lithology, drainage density, NDVI), and quantitative geoheritage scoring (Brilha, IELIG) with min-max score standardization for site-to-site comparison. Seven geosites show high scientific, educational, and touristic value, with Cap Rouge and Cap de Naze most exposed to marine erosion and structural instability, and carbonate sectors most prone to karst collapse. Normalized IELIG protection priorities align with Brilha vulnerability classes for high-risk sites, while diverging for low-access areas (e.g., Islet, Lagoon). We provide a transferable, community-engaged workflow (data sources, weights, thresholds, and validation steps) that supports immediate protection actions and a longer-term management model for coastal geoheritage in West Africa.</p>

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Risk informed geoheritage assessment and coastal management framework for Popenguine Senegal

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年11月18日

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  • Cheikh Ibrahima Youm,
  • Ibrahima Dia,
  • Bocar Sy,
  • Mourtada Fall,
  • El Hadj Ousmane Sambe,
  • Boubacar Diallo

摘要

Coastal geoheritage in West Africa remains under-documented and under-managed despite rapid shoreline change and growing geotourism demand. We develop a replicable, risk-informed framework to evaluate and prioritize geosites in Popenguine, Senegal. We combine stratigraphic and structural field analysis, multi-criteria geohazard mapping (slope, lineaments, lithology, drainage density, NDVI), and quantitative geoheritage scoring (Brilha, IELIG) with min-max score standardization for site-to-site comparison. Seven geosites show high scientific, educational, and touristic value, with Cap Rouge and Cap de Naze most exposed to marine erosion and structural instability, and carbonate sectors most prone to karst collapse. Normalized IELIG protection priorities align with Brilha vulnerability classes for high-risk sites, while diverging for low-access areas (e.g., Islet, Lagoon). We provide a transferable, community-engaged workflow (data sources, weights, thresholds, and validation steps) that supports immediate protection actions and a longer-term management model for coastal geoheritage in West Africa.