Biodiversity (1 - SRK Consulting

in a population going extinct elsewhere or a new plantation locally results in a
reduction in stream flow at the exit to the catchment which affects downstream
biodiversity).
The purpose of CBA’s is simply to indicate spatially the location of critical or important
areas for biodiversity in the landscape. The CBA, through the underlying land
management objectives that define the CBA, prescribes the desired ecological state in
which we would like to keep this biodiversity. Therefore, the desired ecological state or
land management objective determines which land-use activities are compatible with
each CBA category based on the perceived impact of each activity on biodiversity
pattern and process.
Figure 21. Critical Biodiversity Areas (CBA’s) in the Namakwa District Municipality. Note the
presence of CBA1 north of Aggeneys, with CBA2 in the vicinity, while an Ecological Support Area
(ESA) forms a corridor south of Aggeneys (from Marsh et al. 2009)
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