|Central coordinates||31o 55.00' East 0o 27.00' South|
|IBA criteria||A1, A3|
|Year of IBA assessment||2001|
Site description The IBA consists of Lake Nabugabo (c.3,500 ha), a shallow freshwater lake of c.8 km by 5 km, and extensive swamps and small forests to the north, east and south, where Sango Bay (IBA UG013) adjoins. Three much smaller satellite lakes, Birinzi (formerly Kayanja), Manywa and Kayugi are located to the north-west at a slightly higher altitude. Nabugabo is separated from Lake Victoria by an arm of the Lwamunda swamp and a sandbar. Large plants such as Loudetia dominate, but Miscanthus and Vossia, as well as Sphagnum bogs, are also present. Papyrus occurs, but does not dominate any part of the swamp. There is a belt of depleted tropical forest along much of the western shore, and sandy shores along the windward, north-western shoreline. Similar forests exist along the eastern sandbank, some of which are gazetted Forest Reserves. The lakes have been isolated from Lake Victoria for about 3,700 years, during which time the cichlid fauna has undergone speciation. Lake Nabugabo is a popular resort, especially at weekends and public holidays.
|Species||Season||Period||Population estimate||Quality of estimate||IBA Criteria||IUCN Category|
|Shoebill Balaeniceps rex||resident||-||present [units unknown]||-||A1||Vulnerable|
|Papyrus Gonolek Laniarius mufumbiri||resident||1998||present [units unknown]||-||A1, A3||Near Threatened|
|Carruthers's Cisticola Cisticola carruthersi||resident||1998||present [units unknown]||-||A3||Least Concern|
|White-winged Scrub-warbler Bradypterus carpalis||resident||1998||present [units unknown]||-||A3||Least Concern|
|Sharpe's Pied-babbler Turdoides sharpei||resident||1998||present [units unknown]||-||A3||Least Concern|
|Red-chested Sunbird Nectarinia erythrocerca||resident||1998||present [units unknown]||-||A3||Least Concern|
|Northern Brown-throated Weaver Ploceus castanops||resident||1998||present [units unknown]||-||A3||Least Concern|
|Papyrus Canary Serinus koliensis||resident||1998||present [units unknown]||-||A3||Least Concern|
|Protected area||Designation||Area (ha)||Relationship with IBA||Overlap with IBA (ha)|
|Lake Nabugabo Wetland System||Wetlands of International Importance (Ramsar)||22,000||protected area contained by site||22,000|
|IUCN habitat||Habitat detail||Extent (% of site)|
|Artificial landscapes (terrestrial)||2%|
|Land-use||Extent (% of site)|
Other biodiversity Nine species of indigenous fish of the family Cichlidae have been recorded from the lakes, including five endemic species of Haplochromis. The introduction of the non-native fish Oreochromis niloticus, O. leucosticus and Tilapia zillii in the 1950s and Lates niloticus in the early 1960s in both Lakes Victoria and Nabugabo has impacted negatively on the indigenous fish, which may now only remain in the satellite lakes.
References Kateyo (1998), Langdale-Brown et al. (1964), Okot-Okumu (1999), Omoding et al. (1996), Scott et al. (1994).
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Recommended citation BirdLife International (2013) Important Bird Areas factsheet: Nabugabo wetland. Downloaded from http://www.birdlife.org on 11/12/2013
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