Kagera swamps (6987)
Tanzania, Africa
Site overview
KBA status: confirmed
Global KBA criteria: A1a, A1c, B1
Year of last assessment: 2017
National site name: Kagera swamps
Central coordinates: Latitude: -1.5000, Longitude: 30.8333
System: freshwater, terrestrial
Elevation (m): 1400 to 1400
Area of KBA (km2): 1503.88192
Protected area coverage (%): 30.06
KBA classification: Global
Legacy site: Yes
Site details
Site description: The Kagera river forms the border between Tanzania and Rwanda. As it flows north between the two countries, it passes through a series of lakes and swamps for some 100 km. These are surrounded by a series of low rolling hills which, in Tanzania, are extensively cultivated, but within Rwanda are within the Akagera National Park (IBA RW003). The swamps and lakes are characterized by extensive stands of papyrus Cyperus papyrus. The Ibanda Arena Game Reserve (20,000 ha), in the extreme north-west of Tanzania, is included in the IBA, the boundaries of which remain provisional, but nothing is known of its avifauna.
Rationale for qualifying as KBA: This site qualifies as a Key Biodiversity Area of international significance that meets the thresholds for at least one criterion described in the Global Standard for the Identification of KBAs.
Additional biodiversity: See Box and Table 3 for key species. Little is known of the avifauna of the site. Chloropeta gracilirostris has been recorded from papyrus swamps along the Ruvubu river, which flows north into the Kagera river. There are no records from within the IBA site, but it is likely to occur. During the 1990s, up to 50 Balaeniceps rex were estimated to remain in the area although there has been only one record from the Tanzanian part of the swamps. Gallinago media has been recorded once from flooded grassland along the north-western shore of Lake Rushwa and it is likely that similar habitats in the IBA are seasonally important for this passage migrant. Laniarius mufumbiri has been recorded throughout the course of the Kagera river and along the Ruvubu river to the south. Observations and ringing in 1987 and 1993 suggest it is not uncommon. It is unclear if Lybius rubrifacies, the distribution of which defines the ‘Dry woodlands west of Lake Victoria’ Secondary Area (s057), occurs at the site. There is little suitable habitat along the lake shore, but it is likely to occur in the hills overlooking the swamps. While only four species of the Lake Victoria Basin biome are known to occur at the site, it is possible that up to a further five may be present. Non-bird biodiversity: None known to BirdLife International.
Habitats
| IUCN Habitat | Coverage % | Habitat detail |
|---|---|---|
| Grassland | 19 | |
| Wetlands(Inland) | 10 | |
| Artificial - Terrestrial | 16 | |
| Shrubland | 27 | |
| Forest | 25 |
Threats
Summary of threats to biodiversity at KBA: Prior to the conflicts in Rwanda and Burundi, the area of the lakes was only lightly populated and was probably not over-exploited. The lake complex should be granted Game Reserve status, perhaps linked to Burigi Game Reserve (TZ014) to form a single unit.
Additional information
References: Baker and Baker (1994a), Schouteden (1966), Vande weghe (1974, 1992).