gpa_east_africa_case.. - GRID Africa GeoPortal - UNEP

• Resource over-exploitation• Sand mining• Destructive fishing methods3. Restricted access (usage) toresources and resource useconflict• Poor land use planning• Changes of use of resources• Lack of integrated approach to resources use4. Microbial contamination ofgroundwater• On-site domestic sewage disposal• Poor domestic refuse disposal• Soil erosion and siltation5.Saline intrusion6. Marine pollutionMozambique1. Coastal habitat degradationand loss of biodiversity• Increased abstraction of groundwater• Oil spills• Ballast water discharge• Ships solid and oily waste disposal• Siltation from poor land use• Over-exploitation of resources• Destructive fishing methods2. Groundwater contamination3. Water quality degradation4. Restricted access to resources,e.g. beach, fish landing sites,ports and harbours, etc.5. Excessive water abstractionSeychelles1. Public health concerns/ waterquality and potential coastalhabitat degradation2. Coastal deposition of red soilduring rainy season due toan unplanned access roadconstruction sites.3. Habitat/ecosystemdegradation4. Decreasing harvests onmarine and coastal livingresources5. Marine pollution• Saline intrusion due to excessive ground waterabstraction• Domestic and industrial sewage disposal• Domestic waste water• Agrochemical run-off• Domestic solid waste• Industrial waste• Poor or lack of land use plans in coastal urbanisationand tourism related development• Dam construction and agricultural activities upstream• On-site domestic sewage disposal• Industrial effluent disposal• Siltation• Landfills• Increasing catch/effort for pelagic species such tuna,billfish, kingfish by industrial fishery sector• Oil spillsFinal Draft Report – Cost Benefit Case StudiesGPA Strategic Action Plan on Sewage, October, 200068