Your search found 12 records
1 Kambewa, D. 2005. Access to and monopoly over wetlands in Malawi. In van Koppen, Barbara; Butterworth, J.; Juma, I. (Eds.). African Water Laws: Plural Legislative Frameworks for Rural Water Management in Africa: An International Workshop, Johannesburg, South Africa, 26-28 January 2005. pp.31-1/31-14.
(Location: IWMI-HQ Call no: IWMI 333.91 G100 VAN Record No: H038767)
(0.22 MB)
2 Beadle, L. C. 1974. The inland waters of tropical Africa: An introduction to tropical limnology. London, UK: Longman. 365p.
Limnology ; Ecosystems ; Climate ; Rivers ; Lakes ; Swamps ; Fish ; Plankton / Africa / Nile / Niger / River Congo / Zambezi / Lake Albert / Lake Rudolf / The Sahara / Lake Chad / Lake Edward / Lake George / Lake Victoria / Lake Kivu / Lake Tanganyika / Lake Malawi / Lake Chilwa / Lake Kariba / Volta Lake / Lake Kainji / Lake Nasser-Nubia / Jebel Aulyia / Sennar Reservoir / Roseires Reservoir / Lake McIlwaine
(Location: IWMI-HQ Call no: 551.48 G100 BEA Record No: H039368)
3 Rebelo, Lisa-Maria; McCartney, Matthew; Finlayson, Max. 2007. Characterization of two large inland wetlands in Southern Africa. WARFSA/WaterNet Symposium, Lusaka, Zambia, 31 October - 2 November 2007. 8p.
Wetlands ; Ecosystems ; Vegetation ; Land cover ; Remote sensing ; GIS / Southern Africa / Africa South of Sahara / Malawi / Zambia / Lake Chilwa / Lukanga Swamp
(Location: IWMI HQ Call no: IWMI 333.918 G154 REB Record No: H040789)
As wetlands in sub-Saharan Africa often play a vital role in supporting the livelihood and well-being of rural populations their sustainable management is critical. In many instances however, sustainable management of these ecosystems is hindered by a lack of information. For large, inaccessible wetlands Earth Observation data may provide the only practical means of obtaining this information, especially for mapping and monitoring spatial and temporal characteristics. These issues have been addressed at priority wetland sites, vulnerable to both climatic variability and agricultural activities (both subsistence and commercial) n eight countries in southern Africa; here we report outcomes from two of the larger wetlands where increased population pressure and exploitation of resources within the wetlands and the surrounding catchments are leading to serious degradation and loss of biodiversity and inter-linked ecosystem services. A combination of GPS, GIS, aerial photographs and satellite remote sensing data at multiple scales, as well as ground based information, were used to describe the ecological characteristics of these sites, and to map the spatial distribution of the major land cover types. The maps provide information which can be used to assist managers in making decisions about future land uses in wetlands that are intensively used for agriculture and fisheries. The land cover and land use analyses will also provide the basis for livelihood assessments and management interventions.
4 Rebelo, Lisa-Maria; Finlayson, C. Max; Nagabhatla, Nidhi. 2009. Remote sensing and GIS for wetland inventory, mapping and change analysis. Journal of Environmental Management, 90:2144-2153. [doi: https://doi.org/10.1016/j.jenvman.2007.06.027]
Remote sensing ; GIS ; Wetlands ; Surveys ; Mapping ; Case studies ; Capacity building ; Stakeholders / Sri Lanka / Southern Africa / Malawi / Muthurajawela Marsh / Negombo Lagoon / Lake Chilwa
(Location: IWMI HQ Call no: e-copy only Record No: H042129)
(0.93 MB)
A multiple purpose wetland inventory is being developed and promoted through partnerships and specific analyses at different scales in response to past uncertainties and gaps in inventory coverage. A partnership approach is being promoted through the Ramsar Convention on Wetlands to enable a global inventory database to be compiled from individual projects and analyses using remote sensing and GIS. Individual projects that are currently part of this global effort are described. They include an analysis of the Ramsar sites’ database to map the distribution of Ramsar sites across global ecoregions and to identify regions and wetland types that are under-represented in the database. Given the extent of wetland degradation globally, largely due to agricultural activities, specific attention is directed towards the usefulness of Earth Observation in providing information that can be used to more effectively manage wetlands. As an example, a further project using satellite data and GIS to quantify the condition of wetlands along the western coastline of Sri Lanka is described and trends in land use due to changes in agriculture, sedimentation and settlement patterns are outlined. At a regional scale, a project to map and assess, using remote sensing, individual wetlands used for agriculture in eight countries in southern Africa is also described. Land cover and the extent of inundation at each site is being determined from a multi-temporal data set of images as a base for further assessment of land use change. Integrated fully within these analyses is the development of local capacity to plan and undertake such analyses and in particular to relate the outcomes to wetland management and to compile data on the distribution, extent and condition of wetlands globally.
5 Rebelo, Lisa-Maria. 2009. Characterisation of inland wetlands in Africa: Kyoto and Carbon Science Report - Phase 1. Tokyo, Japan: Japan Aerospace Exploration Agency (JAXA) 6p.
Wetlands ; Lakes ; Remote sensing ; Flooding ; Vegetation / Africa / Malawi / Mozambique / Lake Chilwa / Lake Urema
(Location: IWMI HQ Call no: e-copy only Record No: H042527)
http://www.eorc.jaxa.jp/ALOS/en/kyoto/phase_1/KC-Phase1-report_Rebelo.pdf
https://vlibrary.iwmi.org/pdf/H042527.pdf
https://vlibrary.iwmi.org/pdf/H042527.pdf
(1.53 MB) (1.53MB)
Inland wetlands occur extensively across Sub-Saharan Africa. These ecosystems typically play a vital role in supporting rural populations and their sustainable management is thus critical. In order to prevent depletion of resources and ecosystem services provided by these wetlands, a balance is required between ecological and socio-economic factors. The sustainable management of wetlands requires information describing these ecosystems at multiple spatial and temporal scales. However, many southern and eastern African countries lack regional baseline information on the temporal extent, distribution and characteristics of wetlands. PALSAR data provides invaluable information related to the flooding patterns and vegetation characteristics of these wetlands, and is being used to document and characterise specific sites within the region which have been identified due to their vulnerability to both climatic variability and agricultural activities. The information derived from the PALSAR data is needed to assist managers in making decisions about future land uses in wetlands that are intensively used for agriculture and fisheries, and which are an important natural resource for local communities.
6 Rebelo, Lisa-Maria; Finlayson, M. 2010. Characterization of inland wetlands in Africa: K&C science report – phase 1. In Japan Aerospace Exploration Agency (JAXA), Earth Observation Research Center (EORC). The ALOS Kyoto & Carbon Initiative Science Team Reports, Phase 1 (2006-2008): wetlands theme reports. Tsukuba-shi, Japan: Japan Aerospace Exploration Agency (JAXA), Earth Observation Research Center (EORC) pp.140-146.
Wetlands ; Mapping ; Ecosystems ; Flooding ; Hydrology ; Vegetation ; Lakes ; Remote sensing / Africa / Malawi / Mozambique / Lake Chilwa / Lake Urema
(Location: IWMI HQ Call no: 333.91 G100 JAP Record No: H042473)
http://www.eorc.jaxa.jp/ALOS/kyoto/ref/KC_Phase-1_ScienceTeamReports_JAXA-EORC_NDX-100003.pdf
https://vlibrary.iwmi.org/pdf/H042473.pdf
https://vlibrary.iwmi.org/pdf/H042473.pdf
(0.67 MB) (34.49 MB)
Inland wetlands occur extensively across Sub-Saharan Africa. These ecosystems typically play a vital role in supporting rural populations and their sustainable management is thus critical. In order to prevent depletion of resources and ecosystem services provided by these wetlands, a balance is required between ecological and socio-economic factors. The sustainable management of wetlands requires information describing these ecosystems at multiple spatial and temporal scales. However, many southern and eastern African countries lack regional baseline information on the temporal extent, distribution and characteristics of wetlands. PALSAR data provides invaluable information related to the flooding patterns and vegetation characteristics of these wetlands, and is being used to document and characterise specific sites within the region which have been identified due to their vulnerability to both climatic variability and agricultural activities. The information derived from the PALSAR data is needed to assist managers in making decisions about future land uses in wetlands that are intensively used for agriculture and fisheries, and which are an important natural resource for local communities.
7 Rebelo, Lisa-Maria. 2010. Eco-hydrological characterization of inland wetlands in Africa using L-Band SAR. IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 3(4):554-559. [doi: https://doi.org/10.1109/JSTARS.2010.2070060]
Ecology ; Hydrology ; Wetlands ; Ecosystems ; Remote sensing ; Maps ; Vegetation ; Monitoring / Africa / Africa South of Sahara / Malawi / Mozambique / Lake Chilwa / Lake Urema
(Location: IWMI HQ Record No: H043505)
(1.22 MB)
Maps describing the eco-hydrology of inland wetland systems in Africa are needed to identify and implement appropriate adaptive management plans related to land use and land cover. Many African countries lack regional baseline information on the temporal extent, distribution and characteristics of wetlands. This information is provided here in the form of maps which characterize two wetland sites of international importance in Malawi and Mozambique. Multi-temporal L-band Synthetic Aperture Radar (SAR) datasets are combined with Landsat Thematic Mapper and ASTER images, digital elevation models, and vegetation species data to provide information on wetland ecology and hydrology. These data were used as input to a hybrid, Decision Tree classifier and a Principal Components Analysis classification approach to produce maps depicting the spatial distribution of vegetation species and characterizing the wetland dynamics. The maps exhibit classification accuracies of 89% and 84% for the two sites respectively. The L-band SAR datasets have proved to be an essential information source in the production of these maps due to i) frequent cloud cover/smoke which reduces the temporal coverage of optical data, and ii) a systematic observation strategy and frequent image acquisition which enables characterization of the flood dynamics at a high temporal resolution.
8 Rebelo, Lisa-Maria; McCartney, Matthew; Finlayson, M. C. 2011. The application of geospatial analyses to support an integrated study into the ecological character and sustainable use of Lake Chilwa. Journal of Great Lakes Research, 37(Supplement 1):83-92. [doi: https://doi.org/ 10.1016/j.jglr.2010.05.004]
(Location: IWMI HQ Call no: e-copy only Record No: H043687)
(1.76 MB)
Wetlands, which occupy a considerable proportion of Malawi, are an important resource for the rural-poor. In regions of low and erratic rainfall, they provide important opportunities for agriculture and fisheries and are often vital for food security. However, overutilization and some farming practices can result in environmental degradation and the loss of valuable ecosystem services. The Lake Chilwa wetland, a complex aquatic ecosystem comprising a shallow open water lake surrounded by marsh and floodplain grassland, is one of the most important wetlands in Malawi. Most of the 1 million people who live in the vicinity of the lake derive their livelihoods from the wetland. Increases in population in recent decades have increased the pressures on the wetland. In light of continued population growth, it is anticipated that some levels of resource use may be difficult to sustain in the long-term. Consequently, planning the use of wetland resources is a priority if the diverse benefits that local communities presently receive are to be sustained. Baseline wetland information is needed to determine appropriate sustainable management plans, as well as to identify limits to resilience. However, for many wetlands in southern and eastern Africa, these data are lacking, or not available to those who need them. This paper provides an overview of the distribution and characteristics of wetlands in Malawi. Using Lake Chilwa as an example, it illustrates how Earth Observation data, in combination with hydrometric and botanical data, can be used to provide information crucial for sustainable wetland management.
9 Njaya, F.; Snyder, K. A.; Jamu, D.; Wilson, J.; Howard-Williams, C.; Allison, E. H.; Andrew, N. L. 2011. The natural history and fisheries ecology of Lake Chilwa, southern Malawi. Journal of Great Lakes Research, 37(Supplement 1):15-25. [doi: https://doi.org/10.1016/j.jglr.2010.09.008]
Natural history ; Fisheries ; Invertebrates ; Ecology ; Lakes ; Climate change ; Wetlands ; Ecosystems ; Socioeconomic aspects ; Environmental effects ; Social aspects / Malawi / Lake Chilwa
(Location: IWMI HQ Call no: e-copy only Record No: H044281)
(0.92 MB)
Lake Chilwa produces between zero and 24,000 metric tons of fish per year, making it one of the most
productive but variable lakes in Africa. The size of the lake varies seasonally and among years, sometimes drying completely. Its surrounding wetland and floodplain provide habitat for a diversity of birds and economically valuable grasses and reeds. When the lake has water, there is considerable activity on its shores and temporary fishing villages spring up. People move in and out of the lake basin in concert with these seasonal and longer term changes. This paper examines the environmental dynamics of Lake Chilwa and its surrounding wetlands, presents an overview of the socio-economic context of the area and discusses threats to this resilient system that might occur as a result of climate change. We conclude that management of Lake Chilwa must place the lake in the wider economic and ecological system in which it is situated. Ultimately, land-use practices within the basin present more of a threat to the resilience of the fishery and people's livelihoods than overfishing or a strict focus on the lake's resources. These perspectives present significant challenges to conventional fisheries governance.
productive but variable lakes in Africa. The size of the lake varies seasonally and among years, sometimes drying completely. Its surrounding wetland and floodplain provide habitat for a diversity of birds and economically valuable grasses and reeds. When the lake has water, there is considerable activity on its shores and temporary fishing villages spring up. People move in and out of the lake basin in concert with these seasonal and longer term changes. This paper examines the environmental dynamics of Lake Chilwa and its surrounding wetlands, presents an overview of the socio-economic context of the area and discusses threats to this resilient system that might occur as a result of climate change. We conclude that management of Lake Chilwa must place the lake in the wider economic and ecological system in which it is situated. Ultimately, land-use practices within the basin present more of a threat to the resilience of the fishery and people's livelihoods than overfishing or a strict focus on the lake's resources. These perspectives present significant challenges to conventional fisheries governance.
10 Wood, A.; Dixon, A.; McCartney, Matthew. (Eds.) 2013. Wetland management and sustainable livelihoods in Africa. Oxon, UK: Routledge - Earthscan. 281p.
Wetlands ; Catchment areas ; Sustainable livelihoods ; Case studies ; Institutions ; Governance ; Agriculture ; Rice ; Farmers ; Fisheries ; Livestock ; Water management ; River basin development ; Ecosystems ; Natural resources ; Flood control ; Soil fertility ; Vegetation / Africa / South Africa / West Africa / Tanzania / Zambia / Malawi / Ethiopia / Uganda / Nigeria / Craigieburn / Lake Chilwa
(Location: IWMI HQ Call no: IWMI Record No: H045883)
(0.49 MB)
11 Wood, A.; Dixon, A.; McCartney, Matthew. (Eds.) 2013. Wetland management and sustainable livelihoods in Africa. Oxon, UK: Routledge - Earthscan. 281p.
Wetlands ; Catchment areas ; Sustainable livelihoods ; Case studies ; Institutions ; Governance ; Agriculture ; Rice ; Farmers ; Fisheries ; Livestock ; Water management ; River basin development ; Ecosystems ; Natural resources ; Flood control ; Soil fertility ; Vegetation / Africa / South Africa / West Africa / Tanzania / Zambia / Malawi / Ethiopia / Uganda / Nigeria / Craigieburn / Lake Chilwa
(Location: IWMI HQ Call no: IWMI c2 Record No: H045895)
(0.49 MB)
12 International Water Management Institute (IWMI) 2014. Wetlands and people. Colombo, Sri Lanka: International Water Management Institute (IWMI). 32p. [doi: https://doi.org/10.5337/2014.202]
Wetlands ; Natural resources management ; Ecosystems ; River basins ; Dams ; Deltas ; Lakes ; Living standards ; Poverty ; Fish farming ; Rice ; Social aspects ; Economic aspects ; Income ; Case studies / Asia / Africa / Latin America / Niger / Nigeria / Zambia / Brazil / Cambodia / India / Lake Chilwa / Kolleru Lake
(Location: IWMI HQ Call no: IWMI Record No: H046304)
(3.19 MB)
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