International Journal of
Biodiversity and Conservation

  • Abbreviation: Int. J. Biodivers. Conserv.
  • Language: English
  • ISSN: 2141-243X
  • DOI: 10.5897/IJBC
  • Start Year: 2009
  • Published Articles: 609

Article in Press

The effects of abiotic factors on population biology of Euphorbia clivicola, Limpopo Province, South Africa

Seloba Chuene and Martin Potgieter

  •  Received: 02 February 2019
  •  Accepted: 28 May 2019
The need to conduct a detailed biological and ecological study on Euphorbia clivicola was sparked by the drastic decline in population’ sizes of the populations of Percy Fyfe Nature Reserve and Radar Hill, coupled with the discovery of a new population at Ga-Dikgale village, Limpopo Province, South Africa. The newly discovered population lacked scientific data necessary to develop an adaptive management plan. The abiotic interactions with the biology of E. clivicola were examined to determine the intrinsic and extrinsic factors causing the decline in population sizes. Fire as one of the abiotic factors was observed to be beneficial for the survival of E. clivicola in populations with low or no grazing pressure because it weakens the number one competitor of E. clivicola, i.e., gramminoids. Fire also encouraged vegetative growth on adult E. clivicola plants. E. clivicola plants benefited from the rock present in habitats it inhabited because fixed rocks prohibited the establishment of gramminoids and as such competition was lowered. induced rock weathering should be discouraged at all populations of E. clivicola, while, a fire regime of every three years is proposed to deal with soil infertility and gramminoids competition at Percy Fyfe Nature Reserve and Radar Hill Populations

Keywords: Euphorbia clivicola, Fire, Bare ground, Fixed rock, Stone cover, Soil.