Now showing items 1-4 of 4
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 ...
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 ...
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 ...
Groundwater investigation in semi-arid developing countries, using simple GIS tools to facilitate interdisciplinary decision making under poorly mapped conditions: The Boteti area of the Kalahari region in Botswana
(Elsevier www.elsevier.com/locate/jag, 2007)
Locating additional long-term groundwater resources in semi-arid regions of developing countries with growing populations is an expensive undertaking. Simple geographic information system (GIS) techniques can be utilised ...