Primary productivity of papyrus (Cyperus papyrus) in a tropical swamp; Lake Naivasha,Kenya |
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| Institution: | 1. Botany Department, University of Nairobi, PO Box 30197, Nairobi, Kenya;2. Botany Department, Trinity College, University of Dublin, Dublin 2, Republic of Ireland;1. NIOZ Royal Netherlands Institute for Sea Research, Department of Estuarine and Delta Systems, P.O. Box 140, 4400 AC Yerseke, The Netherlands;2. NIOZ Royal Netherlands Institute for Sea Research, Department of Marine Microbiology and Biogeochemistry, P.O. Box 59, 1790 AB Den Burg, Texel, The Netherlands;3. Department of Earth Sciences, Utrecht University, P.O. Box 80021, 3508 TA, Utrecht, The Netherlands;1. Department of Theoretical and Applied Sciences, University of Insubria, Varese, VA, Italy;2. Department of Life and Environmental Sciences, Faculty of Science and Technology, Bournemouth University, Poole, Dorset, UK;1. School of Chemical Sciences, Dublin City University, Dublin 9, Ireland;2. School of Biological Sciences, Queen''s University Belfast, Medical Biology Centre, Lisburn Road, Belfast BT9 5AG, N. Ireland, UK;3. Geological Survey of Ireland, Beggars Bush, Haddington Rd., Dublin 4, Ireland;1. Department of Animal Ecology and Systematics, Justus Liebig University Giessen, Giessen, Germany;2. CNRS, Univ. Lille, UMR 8198 – Evo-Eco-Paleo, F-59000 Lille, France;3. Department of Biology, Mbarara University of Science and Technology, Mbarara, Uganda |
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| Abstract: | Papyrus (Cyperus papyrus) standing biomass and the primary productivity of undisturbed and previously harvested areas of papyrus was measured in Lake Naivasha swamp, Kenya. Papyrus culm density in undisturbed swamp was estimated to be 13·1±1·9 culms m?2 and aerial biomass was 3602 g m?2. In undisturbed swamp the aerial productivity was 14·1 g m?2 day?1 while the previously harvested swamp reached a peak of 21·0 g m?2 after 6 months. The annual aerial production rate of papyrus in Lake Naivasha was estimated to be 5150 g m?2 year?1. To sustain yields of regularly harvested papyrus swamps, the harvest intervals should exceed 1 year. |
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