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Location Kenya, Nyanza Province
Central coordinates 34o 47.00' East  0o 10.00' South
IBA criteria A1, A3
Area 100 ha
Altitude 1,130 m
Year of IBA assessment 2001

NatureKenya



Site description Dunga (or Tako river mouth) is a wetland situated about 10 km south of Kisumu town on the shores of Winam Gulf, Lake Victoria. At the western limit is a beach, used as a major fish landing point. Papyrus Cyperus papyrus stands stretch south-eastwards along the shore from here for c.1.5 km, in a strip that varies in width from about 50 to 800 m. A number of streams drain into the lake through the swamp, the main one being Tako river.

Key Biodiversity See Box and Table 3 for key species. This is one of the most reliable sites in Kenya for the scarce and threatened Chloropeta gracilirostris, which is often seen along the lakeward side of the swamp. All but one of Kenya’s nine Lake Victoria Basin biome species have been recorded here, and it is especially important for Laniarius mufumbiri (relatively common), Bradypterus carpalis and Serinus koliensis, all papyrus endemics.

Non-bird biodiversity: No information is available. Wetlands around the shores of Lake Victoria are known to be important refuges for a number of the lake’s endemic haplochromine fish species.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Papyrus Gonolek Laniarius mufumbiri resident  1999  present  A1, A3  Near Threatened 
Carruthers's Cisticola Cisticola carruthersi resident  1999  present  A3  Least Concern 
White-winged Scrub-warbler Bradypterus carpalis resident  1999  present  A3  Least Concern 
Papyrus Yellow Warbler Chloropeta gracilirostris resident  1999  present  A1, A3  Vulnerable 
Sharpe's Pied-babbler Turdoides sharpei resident  1999  present  A3  Least Concern 
Red-chested Sunbird Nectarinia erythrocerca resident  1999  present  A3  Least Concern 
Northern Brown-throated Weaver Ploceus castanops resident  1999  present  A3  Least Concern 
Papyrus Canary Serinus koliensis resident  1999  present  A3  Least Concern 

IBA Monitoring

2009 very high unfavourable low
  Habitat
Good - based on reliable and complete / representative data

Agricultural expansion and intensification annual & perennial non-timber crops - agro-industry farming likely in long term (beyond 4 years) some of area/population (10-49%) slow but significant deterioration medium
Agricultural expansion and intensification annual & perennial non-timber crops - shifting agriculture happening now some of area/population (10-49%) very rapid to severe deterioration high
Agricultural expansion and intensification annual & perennial non-timber crops - small-holder farming happening now some of area/population (10-49%) moderate to rapid deterioration high
Agricultural expansion and intensification annual & perennial non-timber crops - small-holder farming happening now some of area/population (10-49%) moderate to rapid deterioration high
Agricultural expansion and intensification livestock farming and ranching (includes forest grazing) - nomadic grazing happening now some of area/population (10-49%) moderate to rapid deterioration high
Agricultural expansion and intensification marine and freshwater aquaculture - industrial aquaculture likely in long term (beyond 4 years) small area/few individuals (<10%) slow but significant deterioration low
Agricultural expansion and intensification marine and freshwater aquaculture - subsistence/artisinal aquaculture happening now some of area/population (10-49%) very rapid to severe deterioration high
Climate change and severe weather drought happening now whole area/population (>90%) slow but significant deterioration high
Climate change and severe weather habitat shifting and alteration happening now some of area/population (10-49%) slow but significant deterioration medium
Climate change and severe weather storms and floods happening now small area/few individuals (<10%) no or imperceptible deterioration low
Energy production and mining mining and quarrying happening now some of area/population (10-49%) very rapid to severe deterioration high
Human intrusions and disturbance work and other activities happening now small area/few individuals (<10%) no or imperceptible deterioration low
Invasive and other problematic species and genes invasive non-native/alien species/diseases - named species happening now some of area/population (10-49%) moderate to rapid deterioration high
Invasive and other problematic species and genes problematic native species/diseases - named species happening now some of area/population (10-49%) no or imperceptible deterioration low
Natural system modifications dams & water management/use - abstraction of ground water (agricultural use) happening now some of area/population (10-49%) slow but significant deterioration medium
Natural system modifications fire & fire suppression - increase in fire frequency/intensity happening now some of area/population (10-49%) slow but significant deterioration medium
Natural system modifications other ecosystem modifications happening now some of area/population (10-49%) slow but significant deterioration medium
Over-exploitation, persecution and control of species fishing & harvesting aquatic resources - unintentional effects: subsistence/small scale happening now majority/most of area/population (50-90%) very rapid to severe deterioration very high
Over-exploitation, persecution and control of species fishing & harvesting aquatic resources - unintentional effects: subsistence/small scale happening now majority/most of area/population (50-90%) very rapid to severe deterioration very high
Over-exploitation, persecution and control of species gathering terrestrial plants - unintentional effects (species being assessed is not the target) happening now majority/most of area/population (50-90%) slow but significant deterioration high
Over-exploitation, persecution and control of species hunting & collecting terrestrial animals - intentional use (species being assessed is the target) happening now small area/few individuals (<10%) slow but significant deterioration low
Pollution agricultural & forestry effluents - herbicides and pesticides happening now some of area/population (10-49%) moderate to rapid deterioration high
Pollution agricultural & forestry effluents - nutrient loads happening now some of area/population (10-49%) moderate to rapid deterioration high
Pollution agricultural & forestry effluents - soil erosion, sedimentation happening now some of area/population (10-49%) moderate to rapid deterioration high
Pollution air-borne pollutants - smog happening now small area/few individuals (<10%) no or imperceptible deterioration low
Pollution domestic & urban waste water - sewage happening now some of area/population (10-49%) very rapid to severe deterioration high
Pollution excess energy - noise pollution happening now small area/few individuals (<10%) no or imperceptible deterioration low
Pollution garbage & solid waste happening now some of area/population (10-49%) slow but significant deterioration medium
Pollution industrial & military effluents - type unknown/unrecorded happening now some of area/population (10-49%) moderate to rapid deterioration high
Residential and commercial development commercial and industrial development happening now some of area/population (10-49%) slow but significant deterioration medium
Residential and commercial development housing and urban areas happening now some of area/population (10-49%) slow but significant deterioration medium
Residential and commercial development tourism and recreation areas happening now some of area/population (10-49%) moderate to rapid deterioration high
Transportation and service corridors flight paths happening now some of area/population (10-49%) no or imperceptible deterioration low
Transportation and service corridors roads and railroads past (and unlikely to return) and no longer limiting small area/few individuals (<10%) no or imperceptible deterioration low
Transportation and service corridors shipping lanes likely in long term (beyond 4 years) small area/few individuals (<10%) no or imperceptible deterioration low

Wetlands (inland)   0 0 moderate (70-90%) moderate (70-90%) unfavourable

Little/none of site covered (<10%)  No management plan exists but the management planning process has begun  Substantive conservation measures are being implemented but these are not comprehensive and are limited by resources and capacity  low 

Local conservation groups The local conservation groups below are working to support conservation at this IBA.

Name Year formed
Lake Victoria Sunset Birders 1997
Dunga Ecotourism and Environment Team 1997
Jonam Ecotourism Youth Group 1997

Habitats

IUCN habitat Habitat detail Extent (% of site)
Wetlands (inland) Permanent herbaceous swamps and bogs; Rivers & streams  100%

Land use

Land-use Extent (% of site)
agriculture -
fisheries/aquaculture -
other -

References Johnstone and Githongo (1997), Nasirwa and Njoroge (1997).

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Recommended citation  BirdLife International (2014) Important Bird Areas factsheet: Dunga swamp. Downloaded from http://www.birdlife.org on 28/12/2014

To provide new information to update this factsheet or to correct any errors, please email BirdLife