Lecture
This lecture introduces Geographic Information Systems through a case study on the pollution of Ebrie Lagoon in Abidjan. The problem includes waste accumulation, chemical threats, and oil spills affecting the ecosystem. The methodology involves data acquisition, analysis, and mapping to assess pollution levels, identify vulnerable sites, and raise awareness among decision-makers and the public. Specific study areas within Ebrie Lagoon are highlighted, showing high industrial and population pressures. The methodology includes field campaigns, sampling, laboratory analysis, and the creation of pollution index maps. Techniques like georeferencing, digitalization, and interpolation are used to analyze pollution data. The lecture emphasizes the importance of GIS in environmental decision-making and restoration efforts.