Mapping Coastal Regions of Guinea-Bissau for analysis of Mangrove Dynamics using Remote Sensing Data

The study presents mapping of land cover changes in Guinea-Bissau using remote sensing data. Study area includes tidal floodplains of the rivers Geba, Caceu, and Rio Grande de Buba. Satellite images Landsat 8-9 OLI/TIRS were classified and analysed to evaluate landscape dynamics from 2017 to 2023. The methodology is based on GRASS GIS modules “i. cluster” and “i. maxlik” for image analysis. The results indicated variations in landscape patterns: decrease in natural forests, decline in mangroves, and expansion of urban and agricultural areas. The coastal region of Guinea-Bissau is one of the least known tropical ecosystems in West Africa, and it is among the most vulnerable African countries to climate effects. The paper contributes to the environmental monitoring of West African coasts.