Research articles (ORI): Recent submissions
Now showing items 161-180 of 270
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Water balance and infiltration in a seasonal floodplain in the Okavango Delta, Botswana
(Springer link, http://link.springer.com, 2006)Water balance in a seasonal floodplain in the Okavango Delta, Botswana was determined for three years (1997–1999). There was no surface outflow, and infiltration to ground water was very large (4.7–9.7 m during 90–175 days ... -
Flooding dynamics in a large low-gradient alluvial fan, the Okavango delta, Botswana, from analysis and interpretation of 30-year hydrometric record
(Hydrology and Earth Systems Sciences, www.hydrology-and-earth-system-sciences.net, 2006)The Okavango Delta is a flood-pulsed wetland, which supports a large tourism industry and the subsistence of the local population through the provision of ecosystem services. In order to obtain insight into the influence ... -
Access to water in gazetted and ungazetted rural settlements in Ngamiland, Botswana
(Elservier, www.elsevier.com, 2006)Lack of access to safe or improved water supply in developing countries is a major global concern, since water is a basic need for sustenance. Programmes aimed at improving access to safe water have been implemented in ... -
Scenarios of the impact of local and upstream changes in climate and water use on hydro-ecology in the Okavango Delta, Botswana
(Elservier, www.elsevier.com, 2006)Changes in hydrological inputs to the flood-pulsed Okavango Delta result in changes in such flooding characteristics as floodplain water depth, inundation duration and frequency. A mathematical model is used to assess ... -
Use of the geochemical and biological sedimentary record in establishing palaeo-environments and climate change in the Lake Ngami basin, NW Botswana
(Elservier, www.elsevier.com, 2006)Sediment samples from a continuous 4.6 m profile in the dry bed of Lake Ngami in NW Botswana were analysed for geochemistry and dated using both 14C and TL methods. Certain units in the profile were found to be diatom rich ... -
Communicating integrated water resources management: from global discourse to local practice - chronicling an experience from the Boteti river sub-basin, Botswana
(Elsevier, http://www.elsevier.com, 2008)The Boteti River is an ephemeral outflow of the Okavango River. It lies in the north-western part of Botswana where about 25,000 people reside across a number of widely scattered villages and informal settlements. The ... -
Water resources management in Botswana: balancing sustainability and economic development
(Springer, http://www.springer.com, 2006)Botswana is a rapidly developing country in southern Africa. Over the last three decades, diamond mining and tourism have provided double-digit rates of economic growth. Yet most of Botswana’s land is in the Kalahari desert ... -
Pathways of human sprawl in wilderness buffer zones
(Springer, http://www.springer.com, 2006)Intensification of human sprawl in buffer zones of globally important African wilderness areas is of worldwide concern. The paper identifies two major conflicting (yet potentially reconcilable) pathways of rural sprawl in ... -
Groundwater fluoride levels in villages of Southern Malawi and removal studies using bauxite
(Academic Journals, http://www.academicjournals.org/ijps, 2008) -
The Southern African Regional Science Initiative (SAFARI 2000): wet season campaigns
(Wageningen Institute for Environment and Climate Research, http://library.wur.nl/, 2002)The Southern African Regional Science Initiative (SAFARI 2000) involved two wet season and one dry season field campaigns. This paper reports on the wet season campaigns. The first was conducted at five sites along the ... -
Looking for progenitors: a molecular approach to finding the origins of an invasive weed
(Kluwer Academic Publishers, http://www.springerlink.com, 2002-11-28)One of the major problems in determining the origin of invasive species is that often their arrival is unnoticed. Only when population levels increase is their presence noticed but by this time determining the point of ... -
Woody vegetation resource changes around selected settlement along aridity gradient in the Kalahari, Botswana
(Elsevier Science Ltd, http://www.elsevier.com/locate/cag, 2002-07-22)This paper investigated changes in economically important woody vegetation resources around seven settlements located along an aridity gradient in the Kalahari. Available data at different rainfall levels were analysed ... -
Temperature-Emissivity separation with ASTER and LANDSAT 7 validation on the fringe of the Okavango Delta, Botswana
(SPIE, http://link.aip.org, 2004)Land surface temperatures are important in global change studies, in estimating radiation budget, heat balance studies and as control for climate models. Several algorithms for estimating land surface temperature and ... -
Spatial and temporal land cover changes in the Simen Mountains National park, a world heritage site in Northwestern Ethiopia
(MDPI Publishing; www.mdpi.com, 2011-01-05)The trend of land cover (LC) and land cover change (LCC), both in time and space, was investigated at the Simen Mountains National Park (SMNP), a World Heritage Site located in northern Ethiopia, between 1984 and 2003 using ... -
Status of native woody species diversity and soil characteristics in an exclosure and in plantations of Eucalyptus globulus and Cupressus lusitanica in Northern Ethiopia
(BioOne, www.bioone.org, 2011-05)Exclusion of grazing animals and tree plantations are 2 methods that have been used for restoration of degraded lands in tropical semiarid areas. These 2 options can foster secondary forest succession by improving soil ... -
State interests and multilateral cooperation: thinking strategically about achieving 'wise use' of the Okavango Delta system
(Elsvier, www.elsevier.com, 2003)This paper explores possibilities for achieving 'wise use’, defined as the sustainable utilization of resources of the Okavango Delta system, within the framework of the Ramsar Convention on Wetlands of International ... -
More woody plants? the status of bush encroachment in Botswana's grazing areas
(ScienceDirect, www.sciencedirect.com, 2002)the cattle-dominated grazing areas of Botswana. Bush encroachment species – for instance Acacia tortilis, A. erubescens, A. mellifera, Dichrostachys cinerea, Grewia flava, and Terminalia sericea –are increasing in cover ... -
Importance of nitrogen fixation in soil crusts of southern African arid ecosystems: acetylene reduction and stable isotope studies
(Elsvier, www.elsevier.com, 2003)Cyanobacterial soil crusts may be important in arid and semi-arid ecosystems because of their ability to fix atmospheric nitrogen (N2). These crusts are very sensitive to trampling by animals, and their destruction can ... -
Water flow dynamics in the Okavango River Basin and Delta - a prerequisite for the ecosystems of the Delta
(Elsvier, www.elsevier.com, 2003-09-08)As part of the EU-funded project ‘Water and Ecosystem Resources in Regional Development––Balancing Societal Needs and Wants and Natural Resources Systems Sustainability in International River Basin Systems’ (WERRD) ... -
Community based natural resource management and social sustainability in Ngamiland, Botswana
(Botswana Society, http://www.botsoc.org.bw, 2005)This paper examines the impact of Community-Based Natural Resource Management (CBNRM) in Ngamiland over the past ten years. It shows that CBNRM has made some strides in strengthening and creating new organisations/ ...