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Using diet and plant resources to set wildlife stocking densities in Africa savannas’, J du P.

Bothma, N. van Rooyen*, M. W. van Rooyen*,Wildlife Society Bulletin 32(3):840-851. 2004, of which this is the abstract:


‘In the African savannas, herbivores are classified into 4 basic dietary classes: low-selective grazers, high-selective grazers, mixed feeders, and browsers. Given these conditions, a more appropriate approach (is) needed than the agricultural method based on livestock units to determine stocking rates for wildlife. Consequently, a new approach was developed that recognizes plant resource variation at the plant community level and differentiates between the grazing and browsing component in the diet of herbivores in the African savannas. The model used to calculate the grazing and browsing capacity on wildlife ranches provides for rainfall variability, quality and quantity of available grazing and browse, dietary requirements of each type of wildlife, and availability of suitable habitat. In this model the conventional conversion of wildlife to a Large Stock Unit has been replaced by a Grazer Unit, which is the equivalent of a 180-kg blue wildebeest (Connochaetestaurinus), and a Browser Unit, which is the equivalent of a 140-kg greater kudu (Tragelaphusstrepsiceros). By separating the grazing and browsing components in the diet of wildlife for stocking density calculation, the diversity in the vegetation resources is optimally utilized. ’

Full copies of this paper are available only to accredited academics, but the webmaster has a legitimate copy if anyone would like to see it.

2017 AGM Report and Minutes

Read the Chief Honorary Ranger's Report for 2016 here

and the Minutes of the AGM held on 17th january 2017 here

Bush snippets 

and other news here


Alien plant of the Month

Tree of the Month

April 2017

Leadwood Combretum imberbe



Bird walks

birdingBird walks hosted by Honorary Rangers are held on the first Saturday of the month. The next meeting place is at 'Two Trees' on Seekoei St at 06h00.


Our vision

hrOur vision is to support and assist the Nkomazi Municipality Conservation Department within Marloth Park with their management strategies and objectives while being an effective volunteer group. 
Read a brief  History of Honorary Rangers and the Conservancy

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