Biodiversity (1 - SRK Consulting

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Population fluctuations are not uncommon, and often have a domino effect (for instance when prey population densities decrease in numbers, this will have an adverse effect on carnivore and raptor numbers). The rest of the species richness is made up from common and robust mammals with wide distributional ranges such as aardvarks, springhares, four-striped grass mouse, porcupines, the caracal, the genet, the two mongoose species, the black-backed jackal etc. The role of insectivorous bats in an ecosystem is often under-estimated, whereas their susceptibility to reigning environmental conditions is under-appreciated. Bats are sensitive to adverse daytime environmental conditions and predation, and suitable daytime roosting sites are of cardinal importance. Especially the Bobbejaansgat Mountain has many boulders and rock faces forming many overhangs and deep crevices suitable for daytime roosts. The dammed water and marshland conditions in the Koa River Wash to the north-east of the site are likely to support insect populations for hawking bats. The intended development will result in a progressive loss of ecological sensitive and important habitat units, ecosystem function e.g. reduction in water quality, loss of faunal habitat, and of loss/displacement of threatened or protected fauna. The main conservation objectives for mammals on Portion 3 of the farm Zuurwater 62 are to retain untransformed the mountains and their gravel skirts, the deep red sands and dunes, and as much as possible of the Koa River washes and pans, and the untransformed adjacent grassy plains. The mountains, pans and dunes should be designated sensitive areas and excluded from any development, apart from low densities of livestock grazing. Birds The main conservation objectives for birds on Portion 3 of the farm Zuurwater 63 are to retain untransformed the mountains and their gravel skirts, the deep red sands and dunes, and as much as possible of the Koa River washes and pans, together with whatever of the adjacent grassy plains is not transformed by the proposed solar PV electricity generation facility. The mountains, pans and dunes should be SATO Aggeneys July 2011 14
designated sensitive areas and excluded from any development, apart from low densities of livestock grazing. Of 169 bird species recorded and/or expected on Zuurwater, nine are threatened species, of which the resident, near-endemic, habitatspecific and range-restricted Ludwig's Bustard and Red Lark are both considered Vulnerable by IUCN criteria. The PV array is not considered a direct threat to any bird species, given its limited impact in space (
Page 1 and 2: A vegetation and vertebrate fauna d
Page 3 and 4: Some of the rare or beautiful succu
Page 5 and 6: 6.3.3 Field Survey ................
Page 7 and 8: 12.1 Specific mitigation measures .
Page 9 and 10: Figure 25. The vegetation sensitivi
Page 11 and 12: Figure 54. An easterly view from Bo
Page 13: EXECUTIVE SUMMARY Vegetation Althou
Page 17 and 18: Holdings (SHE, Pty Ltd). The main c
Page 19 and 20: 2. ASSIGNMENT Eco-Agent Ecological
Page 21 and 22: 3. RATIONALE It is widely recognise
Page 23 and 24: 4. SCOPE AND OBJECTIVES OF THE STUD
Page 25 and 26: Figure 3. Satellite image showing t
Page 27 and 28: Topography and drainage The topogra
Page 29 and 30: Figure 6. Close-up satellite image
Page 31 and 32: 6. METHODS Prior to the field visit
Page 33 and 34: 6.1.3 Sensitivity Only High and Low
Page 35 and 36: • Low probability of occurrence w
Page 37 and 38: The biodiversity significance of an
Page 39 and 40: oth by reference to the comprehensi
Page 41 and 42: 6.4. Herpetofauna 6.4.1. Field Surv
Page 43 and 44: • Armadillo Girdled Lizard (Cordy
Page 45 and 46: 7.2 Description of the plant commun
Page 47 and 48: Figure 12. Stipagrostis namaquensis
Page 49 and 50: is low, 70-110 mm per annum, mostly
Page 51 and 52: Figure 14. Grassland on sandy hummo
Page 53 and 54: This plant community with its speci
Page 55 and 56: Crassula sericea Dicoma capensis Cu
Page 57 and 58: Figure 17. A scree slope 4.2.2 Stee
Page 59 and 60: species also occur on the mountain
Page 61 and 62: Schmidtia kalahariensis d Stipagros
Page 63 and 64: 5.2 Washes The drainage lines withi
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in a population going extinct elsew
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7.4 Fine Scale Biodiversity Fine sc
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The SKEP (2005) biodiversity map fo
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National Herbarium. This is therefo
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Figure 26. A map indicating the Bla
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7.10 References Acocks, J.P.H. 1988
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8. RESULTS: MAMMALS Acocks (1988),
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Figure 27. A south-westerly view ov
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8.2 Observed and Expected Mammal Sp
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√ Otocyon megalotis Bat-eared fox
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8.4 Discussion Four pertinent matte
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Knobel, J. & Bredenkamp, G. 2005. T
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9. RESULTS: AVIFAUNA 9.1 General Th
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Figure 33. View east from the Zuurw
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Figure 36. View north from the sout
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Figure 39. View west towards Hoedko
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Figure 42. Patch of green vegetatio
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Table 1: Rating of recognised on-si
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Burchell’s Coucal Centropus burch
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Karoo Eremomela Eremomela gregalis
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9.4. Threatened and Red-Listed Bird
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The remaining four threatened speci
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Department of Environmental Affairs
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10. RESULTS: HERPETOFAUNA 10.1. Her
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Figure 46. A view of red dunes and
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Figure 50. Man-made quarry on the w
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In the western corner of the study
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Very few trees occur on the study s
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Table 1: Reptile and Amphibian spec
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? Prosymna bivittata Two-striped Sh
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Psammophis notostictus Karoo Whip o
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10.6 Conclusions The main conservat
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11. ENVIRONMENTAL IMPACT ASSESSMENT
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assuming that the water does not ha
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Vegetation Deficient plant -5 Mediu
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Impact Table 2a:: Impact on biodive
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Substrate repair 1 2 2 1 2 15 Very
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maintenance, with designated passin
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M6: Control of plant diversity/stru
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Some Red Data plants and animals oc
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Flora Some areas of infrastructure
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(increasing or decreasing with time
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Table 2: Significance Rating Matrix
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APPENDIX 2: CURRICULII VITAE Abridg
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- >150 papers at national and inter
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Visits to Israel, Italy, Germany, U
Page 158 and 159:
Abridged Curriculum Vitae: Ignatius
Page 160 and 161:
Abridged Curriculum Vitae: Alan Cha
Page 162 and 163:
- 15 contributions in or as books
Page 164 and 165:
Abridged Curriculum Vitae: Jacobus
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Biodiversity (1 - SRK Consulting

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