Now showing items 5-6 of 6

    • The potential impacts of wood harvesting of bush thickening species on biodiversity and ecological processes. 

      Joubert, David F.; Zimmermann, Ibo (Namibia, Ministry of Environment and Tourism, 2002)
      Studies of the effects of bush clearing have mostly focussed on economic issues such as production. In this paper, biodiversity and ecological effects of bush clearing were investigated, largely through a literature survey. ...
    • A problem tree to diagnose problem bush. 

      Zimmermann, Ibo; Joubert, David F.; Smit, G.N. (2008)
      The term “problem tree” refers to a conceptual model used as a diagnostic tool to analyse a sequence of events that leads to a problem (such as bush encroachment in rangelands). A problem tree is useful because the ...