Environmental Geochemistry and Health

, Volume 33, Issue 1, pp 49–53

Geochemistry of mineral licks at Loskop Dam Nature Reserve, Mpumalanga, South Africa

  • J. D. Stephenson
  • A. Mills
  • J. J. Eksteen
  • A. V. Milewski
  • J. G. Myburgh
Original Paper

DOI: 10.1007/s10653-010-9313-y

Cite this article as:
Stephenson, J.D., Mills, A., Eksteen, J.J. et al. Environ Geochem Health (2011) 33: 49. doi:10.1007/s10653-010-9313-y

Abstract

Although numerous hypotheses have been proposed to explain geophagy, the primary driver of this behaviour remains elusive. Supplementation of scarce nutrients is one commonly cited explanation. We examined the element concentration of three licks relative to adjacent topsoils to infer the possible reasons for geophagy at Loskop Dam Nature Reserve. Lick samples had greater concentrations of B, Co, Zn, Se, Mo and Mn (Loskop Main Lick); Cu (Klopperskloof Lick); and Na (Klopperskloof Lick and Rhenosterhoek Lick) than those of adjacent topsoil. We suggest that supplementation with all or some of these nutrients is a likely driver of geophagy in this fenced reserve, with different licks providing herbivores with different suites of nutrients.

Keywords

Geophagy Nutrient supplementation Nutrition Selenium Sodium 

Copyright information

© Springer Science+Business Media B.V. 2010

Authors and Affiliations

  • J. D. Stephenson
    • 1
  • A. Mills
    • 2
  • J. J. Eksteen
    • 3
  • A. V. Milewski
    • 4
  • J. G. Myburgh
    • 5
  1. 1.C4 EcoSolutionsTokaiSouth Africa
  2. 2.Department of Soil ScienceStellenbosch UniversityMatielandSouth Africa
  3. 3.Mpumalanga Tourism & Parks AgencyNelspruitSouth Africa
  4. 4.Shenton ParkAustralia
  5. 5.Department of Paraclinical Sciences, Faculty of Veterinary ScienceUniversity of PretoriaOnderstepoortSouth Africa

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