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Now showing items 11-20 of 23
Vegetation cover trends along the Botswana Kalahari transect
(Elsevier; www.elsevier.com/locate/jaridenv, 2003)
Vegetative response aspects of climate change studies include the determination of vegetation cover changes across climatic gradients. Vegetation characteristics and soil moisture measurements were obtained from four ...
Preliminary land-use and land-cover mapping in the upper Okavango basin and implications for the Okavango delta
(Botswana Society, 2005)
Image processing in the upper Okavango catchment resulted in ten generalised classes which
may be used as base line data for monitoring future overall land-use/cover change assessments
over the entire upper catchment. ...
Pollution implications of Save River water from weathering and dissolution of metal hosting minerals at Dorowa phosphate mine, Zimbabwe
(Elsevier. http://www.elsevier.com, 2010-08-20)
The study set out to determine the weathering and dissolution of metal hosting minerals at Dorowa for purposes of deducing pollution potential to the nearby Save River. Phosphate rock is mined at Dorowa for the production ...
Minerals that host metals at Dorowa Rock Phosphate Mine, Zimbabwe
(Bentham Open, 2010)
This study set out to establish the major minerals at Dorowa and determine which of those are likely to host metals that may leach into surface and groundwater. This study comes after a preliminary assessment of the water ...
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 ...
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 ...
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 ...
Nutrient limitations on aboveground grass production in four savanna types along the Kalahari Transect
(Elsevier, 2010-02-19)
The Kalahari Transect (KT) is an International Geosphere–Biosphere Programme mega-transect designed
to examine hydrological and ecological patterns and processes throughout the savannas of southern
Africa. The KT traverses ...
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 ...
Calcrete mapping and palaeo-envoronments in the Qangwa area, Northwest Botswana
(Botswana Society, 2005)
Calcrete deposits of the Qangwa area, northwestern Botswana are evaluated on the basis of satellite imagery and sedimentological analysis. Enhanced Thematic Mapper imagery interpretation
combined with field evidence has ...