International Union for Nature Conservation (IUCN)
The geographic scope of this report is defined in terms of the freshwater hydrology of the northern African region and is based on major river catchment delineations within the countries of Algeria, Egypt, Libyan Arab Jamahiriya, Morocco and Tunisia. The assessment region also includes parts of Mauritania, Mali, and the northern tip of Chad, and stops at the northern tip of Lake Nasser in southern Egypt. Freshwater species native to northern Africa and those introduced to the region before 1500 AD are included in this report.