|Location||South Africa, Western Cape|
|Central coordinates||19o 18.00' East 32o 38.00' South|
|IBA criteria||A1, A2, A3|
|Altitude||363 - 2,026m|
|Year of IBA assessment||2001|
Site description The north-westerly trending Cedarberg mountains are c.90 km long by 25 km wide and rise steeply above the Olifants river valley (170 m). Citrusdal, at about 170 m, is barely 17 km from Sneeuberg (2,027 m), the highest peak in the range. The Cedarberg forms the northern spine of the watershed between the Olifants river to the west and the Tankwa-Doring river system to the east. Directly south of the Cedarberg Wilderness Area, the Koue Bokkeveld and Groot Winterhoek mountains are the continuation of this sandstone chain.The flora is extremely diverse, with mesic mountain fynbos grading into xeric succulent Karoo. Species of the Proteaceae, Ericaceae and Restionaceae dominate the mesic south. The northern Cedarberg holds xerophytic communities on the slopes, while the highest peaks hold typical fynbos. Protea bushes are frequent. Widdringtonia woodland occurs in patches. Moving east, karroid vegetation begins to dominate, and in the flatter, low-altitude terrain of the Tankwa Karoo, varied dwarf succulent shrubland is dominated by Mesembryanthemaceae and seasonally by annuals and geophytes. The varied flora holds many succulents. The shrub layer includes Tetragonia, Pteronia, Rhus, Salsola and Lycium. Belts of riverine vegetation, which line the mostly dry riverbeds, are dominated by Acacia and create a network of well-wooded veins that stretch throughout the plains and gullies. Other habitats that occur within the site are constructed farm dams, human habitation, gardens and stands of non-native Eucalyptus and Populus trees.
|Species||Season||Period||Population estimate||Quality of estimate||IBA Criteria||IUCN Category|
|Cape Francolin Pternistis capensis||resident||1998||present||-||A3||Least Concern|
|Cape Bulbul Pycnonotus capensis||resident||1998||present||-||A3||Least Concern|
|Victorin's Scrub-warbler Bradypterus victorini||resident||1998||present||-||A2, A3||Least Concern|
|Cape Rock-jumper Chaetops frenatus||resident||1998||present||-||A1, A2, A3||Least Concern|
|Orange-breasted Sunbird Nectarinia violacea||resident||1998||present||-||A2, A3||Least Concern|
|Cape Sugarbird Promerops cafer||resident||1998||present||-||A2, A3||Least Concern|
|Protea Canary Serinus leucopterus||resident||1998||present||-||A1, A2, A3||Least Concern|
|Cape Siskin Serinus totta||resident||1998||present||-||A1, A2, A3||Least Concern|
|Protected area||Designation||Area (ha)||Relationship with IBA||Overlap with IBA (ha)|
|Cape Floral Region Protected Areas||World Heritage Site||553,000||protected area overlaps with site||90,716|
|Cederberg||Provincial Nature Reserve||65,630||protected area contained by site||64,400|
|Grootwinterhoek||Provincial Nature Reserve||27,502||protected area contained by site||19,200|
|IUCN habitat||Habitat detail||Extent (% of site)|
|Shrubland||Shrubland - Cape (fynbos)||-|
|Land-use||Extent (% of site)|
|nature conservation and research||19%|
|nature conservation and research||100%|
Other biodiversity Although botanical description of this area is incomplete it is known to hold an exceptional number of plant species, many of which are endemic. The cedar Widdringtonia cedarbergensis (EN) occurs in the special Cedar Reserve within the Cedarberg Wilderness Area. The IBA holds most of the Olifants river catchment, which has a remarkable incidence of endemism among freshwater fish. It is one of only two river systems in southern Africa to have more than two taxa restricted to its catchment. All eight of the catchment’s endemic species are found in this IBA, including Barbus phlegethon (EN), B. erubescens (CR), B. serra (EN), B. capensis (VU), B. calidus (EN), Austroglanis barnardi (CR), A. gilli (VU) and Labeo seeberi (CR).Among herptiles, both Bitis rubida, described in 1997, and Cordylus mclachlani (VU) have global ranges virtually restricted to the Tanqwa Karoo portion of this IBA. Goggia hexapora and G. microlepidota are globally restricted to the mountains of the IBA. Australolacerta australis occurs in only this IBA and one other, the Eastern False Bay mountains (IBA ZA086). Capensibufo tradouwi breeds in moist depressions, vleis and springs in Western Cape mountains and it is found in the Cedarberg and the Southern Langeberg mountains (IBA ZA092). Nucras tessellata, Cordylosaurus subtessellatus, Gerrhosaurus typicus (LR/nt), Cordylus cataphractus (VU), C. polyzonus, Pseudocordylus capensis, Agama hispida, Afrogecko porphyreus, Chondrodactylus angulifer, Goggia lineata, Pachydactylus rugosus and P. serval are all found within the Cedarberg–Koue Bokkeveld complex.
References Cowling (1992), le Maitre (1984), Manders (1985), Privett (1994), Taylor (1997a), van Wilgen et al. (1992).
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Recommended citation BirdLife International (2014) Important Bird Areas factsheet: Cedarberg - Koue Bokkeveld complex. Downloaded from http://www.birdlife.org on 02/08/2014
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