Gold Reef Mountain Bushveld
North-facing quartzite dip slope of the Magaliesberg — the principal terrain of Gold Reef Mountain Bushveld
Ecology
Realm	Afrotropic
Biome	Savanna Biome
Geography
Countries	South Africa
Geology	Quartzite
Conservation
Conservation status	Least threatened

Gold Reef Mountain Bushveld (classification code SVcb 9) is a formally classified vegetation type of South Africa, placed within the Central Bushveld Bioregion of the country's Savanna Biome.^[1] It is one of 459 vegetation types recorded in the National Vegetation Map (NVM), a national-scale biodiversity dataset maintained by the South African National Biodiversity Institute (SANBI), first published in 2006 under Mucina and Rutherford and updated in 2018, with a further beta release in 2024.^[2] The vegetation type occurs principally along rocky ridges associated with quartzite geology in southern Gauteng province and parts of the North West province, and is one of seven vegetation types of the Central Bushveld Bioregion present within the Magaliesberg Biosphere Reserve.^[1][2]

Gold Reef Mountain Bushveld carries the code SVcb 9 in the South African National Vegetation Map.^[2] It belongs to the Savanna Biome, within the Central Bushveld Bioregion.^[1] The National Vegetation Map is described in peer-reviewed literature as "one of South Africa's foundational biodiversity datasets that has an important legislative function," informing government tools such as maps of Critical Biodiversity Areas, Ecological Support Areas, and protected area expansion strategies, and forming a basis for environmental impact assessment.^[2] The NVM aims to map the original or historical extent of ecosystems before contemporary settlements, croplands, and mining modified the landscape, defined as ecosystems present before the advent of permanent European settlement approximately 350 years ago.^[2] Each vegetation type delineates parts of the landscape sharing similar plant communities determined by shared environmental drivers such as geology, soils, flooding, terrain, and bioregion.^[2] The defining environmental characteristic of Gold Reef Mountain Bushveld is its quartzite geology.^[2]

Gold Reef Mountain Bushveld occurs on the mountains and ridges throughout the Magaliesberg Biosphere Reserve, alongside Gauteng Shale Mountain Bushveld and Andesite Mountain Bushveld.^[1] It is one of seven vegetation types belonging to the Central Bushveld Bioregion present within the biosphere, the other six being Marikana Thornveld, Norite Koppies Bushveld, Moot Plains Bushveld, Zeerust Thornveld, Gauteng Shale Mountain Bushveld, and Andesite Mountain Bushveld.^[1] More broadly, the vegetation type is distributed along rocky ridges in southern Gauteng and in parts of the North West province, where its extent is associated with the underlying quartzite geology.^[2] The Magaliesberg Biosphere itself lies at the boundary of two distinct South African biomes (grassland and savanna) with remnants of a third biome, afromontane forest.^[1]

The Central Bushveld Bioregion, to which Gold Reef Mountain Bushveld belongs, is typically represented by woody vegetation over a grass-dominated herbaceous layer. Depending on local conditions, trees form semi-open to closed thickets or woodlands, ranging from short deciduous bush cover to a medium-tall tree cover exceeding five metres of deciduous and evergreen trees. Some vegetation types within this bioregion are dominated by thorny Acacia species.^[1]

The Walter Sisulu National Botanical Garden in Roodepoort, Gauteng (a reserve managed by SANBI) contains Gold Reef Mountain Bushveld as one of its three main natural vegetation types, alongside Northern Afrotemperate Forest and Egoli Granite Grassland.^[3] These three vegetation types together support over 600 naturally occurring plant species within the garden.^[3]

The Magaliesberg Biosphere Reserve contains eight threatened ecosystem types as defined under the National Environmental Management: Biodiversity Act (Act No. 10 of 2004) (NEM:BA). These threatened ecosystem types are embedded within the classified vegetation types of the biosphere. Gold Reef Mountain Bushveld is one of the classified vegetation types in which these threatened ecosystem types are embedded.^[1]

The eight threatened ecosystem types, their conservation status under NEM:BA, and their extent within the Magaliesberg Biosphere Reserve are as follows:^[1]

Gold Reef Mountain Bushveld is one of the recorded habitats of Dicliptera magaliesbergensis K.Balkwill (family Acanthaceae), a bushy herb endemic to Gauteng and listed as Vulnerable (VU) on the Red List of South African Plants.^[4] The species is found in Magaliesberg, Krugersdorp, Irene, and Onderstepoort, and its major habitats include Carletonville Dolomite Grassland, Gold Reef Mountain Bushveld, Gauteng Shale Mountain Bushveld, Marikana Thornveld, and Rand Highveld Grassland.^[4] It is one of 20 South African species of Dicliptera and one of only three that are threatened.^[4]

Dicliptera magaliesbergensis is a bushy herb growing to 0.5 m tall, with opposite, ovate leaves that are dark green with prominent veins below. Its flowers are bi-labiate (two-lipped) and purple, 6.7–8.1 mm long, blooming from midsummer (January) through to autumn (May).^[4] The species is currently known from fewer than ten wild populations and is under threat from destruction and degradation of riparian areas as a result of urban development and agriculture.^[4] It has been observed growing naturally within Gold Reef Mountain Bushveld and is also cultivated at the Walter Sisulu National Botanical Garden, where hoverflies, bees, and butterflies have been recorded visiting its flowers.^[4]

Gold Reef Mountain Bushveld is represented within protected areas in Gauteng. The Walter Sisulu National Botanical Garden, managed by SANBI, covers over 300 hectares in Roodepoort and contains Gold Reef Mountain Bushveld as one of its three main natural vegetation types, alongside Northern Afrotemperate Forest and Egoli Granite Grassland.^[5] The garden was established in 1982 on land leased from the Roodepoort and Krugersdorp City Councils, opened to the public in 1987 as the Witwatersrand National Botanical Garden, and was renamed in March 2004 in honour of Walter Sisulu (1912–2003), a prominent anti-apartheid activist and member of the African National Congress.^[5] The three vegetation types together support over 600 naturally occurring plant species, and the garden has recorded over 240 bird species on site.^[5]

• South African National Biodiversity Institute (SANBI) — the statutory body that maintains the National Vegetation Map
• Magaliesberg — the mountain range and UNESCO Biosphere Reserve in which the vegetation type principally occurs
• Walter Sisulu National Botanical Garden — a SANBI-managed protected area containing this vegetation type
• List of vegetation types of South Africa — the full SANBI National Vegetation Map classification

• Mucina, L.; Rutherford, M.C., eds. (2006). The Vegetation of South Africa, Lesotho and Swaziland. Strelitzia. Vol. 19. Pretoria: South African National Biodiversity Institute. ISBN 978-1-919976-21-1.
• Dayaram, A.; Harris, L.R.; Grobler, B.A.; van der Merwe, S.; Rebelo, A.G.; Powrie, L.W.; Vlok, J.H.J.; Desmet, P.G.; Qabaqaba, M.; Hlahane, K.M.; Skowno, A.L. (2019). "Vegetation Map of South Africa, Lesotho and Swaziland 2018: A description of changes since 2006". Bothalia - African Biodiversity & Conservation. 49 (1). South African National Biodiversity Institute: a2452. doi:10.4102/abc.v49i1.2452.