coaltech upper olifants river catchment wetland inventory ...

3.3.2 Birds
Various bird species utilise the available habitat within the wetlands of the UORC. The
various wetland types with their plant species diversity result in a variety of different habitats
for the bird species to use (Barnes 2000). A large number of Red Data birds have been
recorded utilising the wetlands in the catchment in the past. Due to the large distribution area
of some of the bird species recorded, the populations in the catchment may make a
significant contribution to the overall national number recorded for the species. The most
important wetland type for bird distribution is probably the pans (Palmer et al 2002). Pans
provide a great variety of habitat types including open saline water and fresh water, as well
as different saturation zones (temporary, seasonal and permanent). Most water bird species
are opportunistic and the diversity of species utilising artificial wetlands is also high (Palmer
et al 2002, Barnes 2000, Barnes 1998).
3.3.3 Mammals and Reptiles
Although the wetlands are characterised by a low diversity of reptile and mammal fauna, the
wetlands provide important ecological corridors for the species to receive genetic diversity
from other populations (Palmer et al 2002).
Three of the mammal species observed in wetlands of the UORC are Red Data species.
One of these species is Critically Endangered (Rough-haired Golden Mole (Chrysospalax
villosus)) and White-tailed Rat (Mystromys albicaudatus) and Oribi (Ourebia ourebei) are
endangered. The Rough-haired Golden Mole occurs in grassland and has a preference for
dry ground next to marshes and damp vleis (Skinner & Smithers 1990). The White-tailed Rat
is closely associated with the savanna/grassland zone and is not specifically associated with
wetlands (Skinner & Smithers 1990). Oribi prefer open habitat such as open grassland,
floodplains and grassed vleis. They do not occur where there is a dense cover of tall grass
species, but prefer short grass with a few patches of tall grass in which to hide while resting.
Grazing by cattle opens the vegetation and therefore renders a site suitable for Oribi. They
are not found in arid or forested areas (Skinner & Smithers 1990).
Wetland Database for UORC - 25 -