Abstract
The aquatic macrophytic vegetation constituting the wetlands situated along the coast of Lake Victoria provides valuable services to both local and regional communities as well as an important ecological function through the transition between terrestrial and aquatic ecosystems. The wetland vegetation is typically rooted in the substrate on the landward side of the lake, but forms a floating mat towards the middle of the wetland and at the wetland/lake interface. Cyperus papyrus and Miscanthidium violaceum vegetation typically dominate the permanently inundated wetland areas along most of the shores of Lake Victoria. Due to the prevailing climatic and hydrological catchment conditions, these macrophytic plants (papyrus in particular) tend to exhibit high net productivity and nutrient uptake which strongly influences both wetland status and lake water quality. In addition, these wetlands provide important economic livelihoods for the local populations. The integrity and physical structure of these wetlands strongly influences their associated mass transport mechanisms (water, nutrients and carbon) and ecosystem processes. Wetland degradation in Africa is an increasing problem, as these ecosystems are relied upon to attenuate industrial, urban and agricultural pollution and supply numerous services and resources. In an integrated project focused on the wetlands of Lake Victoria, the ecological and economic aspects of littoral wetlands were examined and new instruments developed for their sustainable management.
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References
Albright T, Moorhouse T, McNabb T (2002) The abundance and distribution of water hyacinth in Lake Victoria and the Kagera River basin, 1989–2001. USGS/EROS Data Center and Clean Lakes, Inc., p 42
Abila R (1998) Utilisation and economic valuation of the Yala swamp wetland. In: Gauler M (ed) Strategies for wise use of wetlands-Best practices in participatory management. Proceedings of the 21st International conference on wetlands and development, November 1998. Dakar, Senegal
Azza NGT, Kansiime F, Nalubega M, Denny P (2000) Differential permeability of papyrus and Miscanthidium root mats in Nakivubo swamp, Uganda. Aqua Bot 67:169–178
Balirwa JS (1995) The Lake Victoria environment: its fisheries and wetlands—a review. Wetl Ecol Manage 3:209–224
Brix H (1994) Functions of macrophytes in constructed wetlands. Wat Sci Tech 29(4):71–78
Carter GS (1954) The papyrus swamps of Uganda. W. Heffer and Sons Ltd, Cambridge England
Denny P (1993) Wetlands of Africa. In: Whigham DF, Dykyjova, Hejny S (eds) Wetlands of the world 1. Inventory, ecology and management. Kluwer Academic Publishers, Dordrecht, pp 1–28
Eggeling WJ (1935) The vegetation of Namanve swamp, Uganda. J Ecol 23: 422–435
Gaudet JJ (1976) Nutrient relationships in the detritus of a tropical swamp. Arch Hydrobiol 78:213–239
Gaudet JJ (1978) Effects of a tropical swamp on water quality. Ver int Verein Limnol 20:2202–2206
Gichuki JF, Dahdouh Guebas F, Mugo J, Rabuor CO, Triest L, Dehairs F (2001) Species inventory and the local uses of the plants and the fisheries of the lower Sondu Miriu wetland of lake Victoria, Kenya. Hydrobiologia 458:99–106
Jones M, Humphries S (2002) Impacts of the C4 Sedge Cyperus papyrus L. on carbon and water fluxes in an African Wetland. Hydrobiologia 488:107–113
Faulkner SP, Richardson CJ (1989) Physical and chemical characteristics of fresh water wetland soils. In: Hammer DA (ed) Constructed wetlands for waste water treatment. Lewis Publishers, Inc., Michigan, pp 41–72
Hammer DA, Bastian RK (1989) Wetlands ecosystems: natural water purifiers? In: Hammer DA (ed) Constructed wetlands for wastewater treatment: municipal, industrial and agricultural. Lewis publishers, Chelsea, pp 5–19
Hecky RE (1993) The eutrophication of Lake Victoria. Verhandlungen der Internationalen Vereinigung für Limnologie 25:39–48
Howard-Williams C, Gaudet JJ (1985) The structure and functioning of African swamps. In: Patrick Denny (ed) Ecology and management of African wetland vegetation. Dr. Junk Publishers, Dodrecht
Jones MB (1983) Papyrus: a new fuel for the third world. New Scientist 99:419–421
Kadlec RH, Knight RL (1996) Treatment wetlands. Lewis publishers, New York
Kagwa RC, Mulalelo CI, Denny P, Okurut TO (2001) The impact of Alum discharges on a natural tropical wetland in Uganda. Water Res 35(3):759–807
Kansiime F, Nalubega M (1999) Wastewater treatment by a natural wetland: the Nakivubo swamp, Uganda. Processes and implications. PhD Thesis, A.A. Balkema Publishers, Rotterdam, The Netherlands
Lind EM, Morrison ES (1974) East African vegetation. Longman Group Ltd., London
Lind EM, Visser SA (1962) A study of a swamp at the north end of Lake Victoria. J Ecol 50:599–613
Mugidde R (1993) The increase in phytoplankton primary productivity and biomass in Lake Victoria (Uganda). Verhandlungen der Internationalen Vereinigung für Limnologie 25:846–849
Muli JR (1996) Environmental problems of Lake Victoria (East Africa): what the international community can do. Lakes Reserv: Res Manage 2:47–53
Muthuri FM, Jones MB, Imbamba SK (1989) Primary productivity of papyrus (Cyperus papyrus) in a tropical swamp, Lake Naivasha, Kenya. Biomass 18:1–14
Muthuri FM, Kinyamario DI (1989) The nutritive value of Papyrus Cyperus papyrus L. Econ Bot 43:23–30
Ochumba PB (1990) Massive fish kills within the Nyanza Gulf of Lake Victoria, Kenya. Hydrobiologia 208:93–99
Ogutu-Ohwayo R, Hecky RE, Cohen AS, Kaufman L (1997) Human impacts on the African great lakes. Environ Biol Fishes 50:117–131
Reddy KR, DeBusk TA (1987) The state of the art of utilisation of aquatic plants in water pollution control. Wat Sci Tech 19(10):61–67
Roggeri H (1995) Tropical freshwater wetlands. A guide to current knowledge and sustainable management. Kluwer Academic Press, Dordretcht
Simonit S, Perrings C (2005) Indirect economic indicators in bio-economic fishery models: agricultural price indicators and fish stocks in Lake Victoria. ICES J Mar Sci 62:483–492
Sturmbauer C, Meyer A (1992) Genetic divergence, speciation and morphological stasis in a lineage of African cichlid fishes. Nature 358:578–581
Thompson K (1985) Emergent plants of permanent and seasonally-flooded wetlands. In: Denny P (ed) The ecology and management of African wetland vegetation. Dr. W. Junk Publishers, Dordrecht, pp 43–108
Wetzel RG (1993) Constructed wetlands: scientific foundations are crucial. In: Moshiri GA (ed) Constructed wetlands for water quality improvement. Lewis publishers, Boca Raton, pp 3–7
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Kansiime, F., Saunders, M.J. & Loiselle, S.A. Functioning and dynamics of wetland vegetation of Lake Victoria: an overview. Wetlands Ecol Manage 15, 443–451 (2007). https://doi.org/10.1007/s11273-007-9043-9
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DOI: https://doi.org/10.1007/s11273-007-9043-9