Access

You are not currently logged in.

Access your personal account or get JSTOR access through your library or other institution:

login

Log in to your personal account or through your institution.

If You Use a Screen Reader

This content is available through Read Online (Free) program, which relies on page scans. Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.

Nutrients in Soil and Vegetation Around Two Artificial Waterpoints in Eastern Botswana

D. J. Tolsma, W. H. O. Ernst and R. A. Verwey
Journal of Applied Ecology
Vol. 24, No. 3 (Dec., 1987), pp. 991-1000
DOI: 10.2307/2403995
Stable URL: http://www.jstor.org/stable/2403995
Page Count: 10
  • Read Online (Free)
  • Download ($18.00)
  • Subscribe ($19.50)
  • Cite this Item
Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Nutrients in Soil and Vegetation Around Two Artificial Waterpoints in Eastern Botswana
Preview not available

Abstract

(1) A comparison of the vegetation and soil was made around two boreholes differing in cattle density and exploitation period. (2) Increased grazing and trampling pressure around the borehole has caused a vegetation zonation with a species-poor zone in the immediate vicinity of the borehole, followed by thickets with Acacia species and Dichrostachys cinerea, transitional to tree savanna. (3) The creation of the artificial water points has caused an increase in soil nutrients near the borehole due to deposition of dung and urine, the amount dependent on cattle density and borehole age. (4) The increased soil fertility is reflected in the nutrient content of the herbs and trees near the boreholes. (5) A nutrient balance demonstrated that overgrazing severely affected the phosphorus balance of the savanna ecosystem.

Page Thumbnails

  • Thumbnail: Page 
991
    991
  • Thumbnail: Page 
992
    992
  • Thumbnail: Page 
993
    993
  • Thumbnail: Page 
994
    994
  • Thumbnail: Page 
995
    995
  • Thumbnail: Page 
996
    996
  • Thumbnail: Page 
997
    997
  • Thumbnail: Page 
998
    998
  • Thumbnail: Page 
999
    999
  • Thumbnail: Page 
1000
    1000