CEPF
Protecting Nature's Hotspots for people and prosperity

Cape Floristic Hotspot

Tab 1

Overview
King Protea flower (Leucospermum cyranoides) in the mountains and coast between George and Mossel Bay, Cape Floristic Province 
 
Evergreen fire-dependent shrublands characterize the landscape of the Cape Floristic Region, one of the world's five Mediterranean hotspots.

Home to the greatest non-tropical concentration of higher plant species in the world, the region is the only hotspot that encompasses an entire floral kingdom, and holds five of South Africa's 12 endemic plant families and 160 endemic genera. The geometric tortoise, the Cape sugar-bird, and a number of antelope species are characteristic of the Cape Floristic hotspot.

VITAL SIGNS

Hotspot Original Extent (km²) 78,555
Hotspot Vegetation Remaining (km²) 15,711
Endemic Plant Species 6,210
Endemic Threatened Birds 0
Endemic Threatened Mammals 1
Endemic Threatened Amphibians 7
Extinct Species† 1
Human Population Density (people/km²) 51
Area Protected (km²) 10,859
Area Protected (km²) in Categories I-IV* 10,154
†Recorded extinctions since 1500. *Categories I-IV afford higher levels of protection.


OVERVIEW

Hugging the coastline along the far southwestern tip of the African continent, the 78,555 km² Cape Floristic Region hotspot is located entirely within the borders of South Africa. It is one of the five temperate Mediterranean-type systems on the hotspots list, and is one of only two hotspots that encompass an entire floral kingdom (the other being New Caledonia).

The vegetation on the Cape is dominated by fynbos (an Afrikaans word for "fine bush"), a shrubland comprising hard-leafed, evergreen, and fire-prone shrubs that thrives on the region's rocky or sandy nutrient-poor soils. Although the region was once covered by lush rain forest, climate changes around 15 million years ago resulted in the retreat of the forests. Trees were replaced by flammable sclerophyllous plants, and periodic fires became an integral ecosystem process.

The Cape also includes several non-fynbos vegetation types. Of these, Renosterveld (Afrikaans for "rhinoceros veld," referring to the presence of the black rhinoceros (Diceros bicornis), that used to browse there but is now extinct in this region) is the most extensive, covering some 20,000 km². This plant community comprises a low shrub layer, usually dominated by the renosterbos (Elytropappus rhinocerotis), with a ground layer of grasses and seasonally active bulbs.

Today, trees are very rare in pristine Cape landscapes and true forests occupy a mere 3,850 km², mostly in moist, fire-protected sites on the southern coastal forelands and lower mountain slopes. The Cape forests, 10-30 meters tall, are essentially outliers of the Afromontane forests of the high mountains of tropical Africa.​​​
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Tab 2

Species
A bontebok (Damaliscus pygargus pygargus) in the Bontebok National Park, South Africa 
 
Unique biodiversity​

DIVERSITY & ENDEMISM

Taxonomic Group Species Endemic Species Percent Endemism
Plants 9,000 6,210 69.0
Mammals 91 4 4.4
Birds 323 6 1.9
Reptiles 100 22 22.0
Amphibians 46 16 34.8
Freshwater Fishes 34 14 41.2

 
​​PLANTS

The Cape Floristic Region is home to the greatest non-tropical concentration of higher plant species in the world, with 9,000 species crammed into its small extent. Incredibly, more than 6,200 (69 percent) of these species are found nowhere else in the world. Furthermore, five of South Africa's 12 endemic plant families and 160 endemic genera are found only in this hotspot.

Certain genera have undergone massive diversification—the 10 largest genera account for 21.5 percent of the flora—with the two most speciose being Erica (Ericaceae: 658 species) and Aspalathus (Fabaceae: 257 species). Species richness and local endemism is greatest in the southwest; the Cape Peninsula (471 km²) alone supports 2,256 species (including 90 endemics).

Among the best-recognized plant species in the hotspot are the proteas, particularly the king protea (Protea cynaroides), which is South Africa's national flower, and the red disa (Disa uniflora). Also worth a mention is the Clanwilliam cedar (Widdringtonia cedarbergensis, EN), a graceful but declining relict conifer endemic to the Cederberg mountains in the northwestern part of the region.


VERTEBRATES

Birds
The avifauna of the Cape Floristic Region is characterized by low diversity, most likely the result of structural uniformity in the vegetation and a shortage of available food. Of the 320 or so regularly occurring species of land birds here, only six are endemic. Nevertheless, the area is considered an Endemic Bird Area by BirdLife International, and is home to a number of true fynbos species such as the Cape sugarbird (Promerops cafer), the orange-breasted sunbird (Nectarinia violacea), the Protea canary (Serinus leucopterus) and the Cape siskin (Serinus totta). Although the more widespread Cape griffon (Gyps coprotheres, VU) can still be found in the hotspot, happily none of the endemic birds are considered threatened.

Mammals
While the Cape region never supported concentrations of animals as dense as the African savannas, it did once have significant populations of many of the well-known large mammals, including common eland (Tragelaphus oryx), African buffalo (Syncerus caffer), lions (Panthera leo, VU), black rhinoceros, African elephant (Loxodonta Africana, VU), Mountain zebra (Equus zebra, EN), and hippopotamus (Hippopotamus amphibius). Today, however, nearly all of these populations have disappeared or have been reduced to tiny remnant groups. Two of the most interesting mammals that once lived on the Cape are now extinct: the bluebuck (Hippotragus leucophaeus) and the quagga (Equus quagga), a subspecies of the plains zebra that had no stripes on the rear part of its body, both disappeared in the 1800s.

Today, there are about 90 species of mammals in the hotspot, four of which are endemic, including two species of golden moles: the Fynbos golden mole (Amblysomus corriae) and Van Zyl's golden mole (Cryptochloris zyli, CR). Of the region's remaining large mammals, one of the most beautiful is the bontebok (Damaliscus dorcas dorcas), an antelope that, though nearly extinct in the mid-1800s, was saved by the dedication of a small group of conservationists. Today, the bontebok numbers about 2,000, and the prospects for the species' survival are quite good. The hotspot is also the home of several small solitary antelope species including the Cape grysbok (Raphicerus melanotis).

Reptiles
Reptile diversity in the Cape Floristic Region is relatively high, with about 100 species, nearly a quarter of which are endemic. The Cape boasts an impressive level of tortoise diversity. South Africa itself has the highest tortoise diversity on Earth, and five species are found almost exclusively within the Cape Floristic Region. These include the angulate tortoise (Chersina angulata); parrot-beaked tortoise (Homopus areolatus); geometric tortoise (Psammobates geometricus, EN); and leopard tortoise (Geochelone pardalis). The geometric tortoise is one of the rarest tortoise species in world. It has lost 97 percent of its habitat, and only 2,000-3,000 individuals survive in approximately 30 localities in a small patch of about 50 km².

Amphibians
There are more than 40 species of amphibians in the hotspot. Sixteen of these are endemic, including the Table Mountain ghost frog (Heleophryne rosei, CR) which is found only on the slopes of Table Mountain between 240 and 1,060 meters above sea level. Two amphibian genera are endemic, each represented by a single species: the micro frog (Microbatrachella capensis, CR), found in sandy, coastal fynbos heathland, and the montane marsh frog (Poyntonia paludicola), a species of mountain fynbos heathland.

Freshwater Fishes
Of the nearly 35 native freshwater fish species in the Cape Floristic Region, more than a dozen are endemic. Some of the more distinctive fishes in the clear mountain streams of this region include the Cape galaxias (Galaxias zebratus), an elongated, scaleless fish, as well as several species of endemic redfin minnows (Pseudobarbus spp.).


INVERTEBRATES

Although little is known about the invertebrate fauna of the region, the few groups that have been studied suggest high levels of endemism. Of more than 230 species of butterflies, about 30 percent are endemic. One study on the Cape Peninsula found 111 invertebrate endemics in 471 km², a level higher than that of plants.​

Tab 3

Threats
Red Hot Poker flower (Kniphofia uvaria), Kamiesberg Moutains, Fynbos, South Africa 
 
​​Human impacts​

Today, a range of human activity seriously threatens the unique vegetation of the Cape Floristic Region. Agricultural expansion has reduced lowland habitats such as the Sandplain fynbos and Coast renosterveld by 83 percent and 48 percent of their original extent, respectively. Much of what remains exists in isolated fragments in a matrix of chemically treated agriculture. Agricultural development is encroaching on natural areas even in the mountains, where impoverished soils previously limited agriculture; farming of rooibos tea, (Aspalathus linearis), honeybush tea (Cyclopia spp.), cut flowers (mainly Proteaceae), and, of course, vineyards pose a significant threat to the remaining vegetation.

In addition, urban encroachment and development, particularly near the city of Cape Town, is a threat to natural habitats. Although urban and industrial areas currently occupy less than 1 percent of the land area in the hotspot, population is growing rapidly; Cape Town's population is expected to double by the year 2025.

However, the greatest threat to this hotspot is the effect of invasive alien plant species. For decades, trees and shrubs from other Mediterranean-type climates such as southern Australia, the Mediterranean Basin, and California have been introduced into the region to supplement the few tree species native to the Cape. These alien species have invaded about 70 percent of mountain and lowland fynbos, altering natural fire frequencies, diminishing mountain-derived water production, and ultimately eliminating native species.

Overall, some 33 percent of the Cape Floristic Region has been transformed by agriculture, urbanization and dense stands of alien invasive plants. However, only about 15,700 km², or 20 percent, is in pristine condition, being free of invasive alien plants and subject to appropriate fire regimes.​

Tab 4

Projects
Mountains and fields in Karoo National Park, Cape Province, South Africa 
 
Conservation action and protected areas​

According to the World Database on Protected Areas, about 10,859 km², representing about 14 percent of the total land area, in the Cape Floristic Region is in protected areas, nearly all of it in IUCN categories I to IV. However, this land is far from representative of the hotspot's full diversity; while 50 percent of the mountain landscapes are conserved, only nine percent of the lowlands, which are the most vulnerable, are under some form of protection.

Although the high costs of land purchase and park management activities have posed serious challenges to conservation in the region, a number of recent successes point to a more optimistic future for the hotspot's biodiversity. These achievements have helped to strengthen the already tremendous level of public awareness about the value of the province and its fauna and flora.

Among many promising projects is an initiative called the Working for Water Programme, which focuses on the removal of alien plants to encourage the regeneration of native vegetation and protection of watersheds. The program has created 3,600 jobs in the region and led to the clearing of nearly 500 km² of alien growth, one of the most impressive efforts of its kind in the world.

There have also been a number of triumphs in the establishment of new protected areas, including the Cape Peninsula National Park, the Cape Agulhas National Park, and the West Coast Biosphere Reserve. At a recent meeting in Suzhou, China, UNESCO recognized the importance of this region by declaring it a World Heritage Site for its "outstanding universal significance to humanity." Eight protected areas together comprise the Cape Floristic Region World Heritage Site, one of which includes Kirstenbosch National Botanical Garden, the first time that a botanical garden has been recognized as a world heritage site for its biodiversity. The areas included in the world heritage site are Table Mountain, Baviaanskloof, De Hoop Nature Reserve, Boland Mountain Complex, Groot Winterhoek Wilderness Area, Swartberg Complex, Boosmansbos Wilderness Area, and Cederberg Wilderness Area. These eight separate protected areas total more than 553,000 hectares, making this World Heritage Site the richest for plants in the world on a per area basis.

It is hoped that UNESCO listing will help to encourage the 'biodiversity economy' in the region, and will promote eco-tourism and better planning and management of the region's incredibly rich natural resources, protected areas, and scenic landscapes for the benefit of all South Africans. Already, the Cape Action Plan for the Environment, a $6 million project funded by the GEF and World Bank, is supporting the development and implementation of a strategic plan for sustainable conservation of the hotspot's unique flora and fauna, and a $6 million investment by the Critical Ecosystem Partnership Fund is being used partially to support three mega-reserves: Baviaanskloof, Cederberg and Gouritz, and to build the capacity of previously disadvantaged local conservationists.​

Tab 5

Sources
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References​

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Baard, E.H.W. 1995. Kaapse Skilpaaie. Kaapstad, South Africa: Kaapse Natuurbewaring.

Baard, E.H.W. 1997. A conservation strategy for the geometric tortoise, Psammobates geometricus. In Proceedings: Conservation, Restoration, and Management of Tortoises and Turtles - An International Conference. pp. 324-329. New York: The New York Turtle and Tortoise Society.

Bond, P. & Goldblatt, P. 1984. Plants of the cape flora: A descriptive catalogue. Journal of South African Botany Supplementary, Vol. 13.

Branch, B. 1994. Field Guide to the Snakes and Reptiles of Southern Africa. Cape Town: Struik Publishers.

Cowling, R.M., Holmes, P.M. & Rebelo, A.G. 1992. Plant diversity and endemism. In R.M. Cowling. (Ed.), The Ecology of Fynbos: Nutrients, Fire and Diversity. pp. 62-112. Cape Town: Oxford University Press.

Cowling, R.M. & Richardson, D.M. 1995. Fynbos: South Africa’s Unique Floral Kingdom. Cape Town: Fernwood Press.

Cowling, R.M., Richardson, D.M. & Mustart, P.J. 1997. Fynbos. In R.M. Cowling, D.M. Richardson & S.M. Pierce. (Eds.), The Vegetation of Southern Africa. pp. 99-130. Cambridge, U.K.: Cambridge University Press.

Cowling, R.M. & Pressey, R.L. 2003. Introduction to systematic conservation planning in the Cape Floristic Region. Biological Conservation 122: 1-13.

Day, D. 1981. Vanished Species. New York: Gallery Books.

Deacon, H.J. 1992. Human settlement. In R.M. Cowling. (Ed.), The Ecology of Fynbos: Nutrients, Fire and Diversity. pp. 260-270. Cape Town: Oxford University Press.

Goldblatt, P. & Manning, J. C. 2002. Plant diversity of the Cape Region of South Africa. Annals of the Missouri Botanical Garden 89: 281-302.

Goldblatt, P. & Manning, J. C. 2000. Cape Plants. Cape Town: National Botanical Institute.

Harrison, J.A., Allan, D.G., Underhill, L.G., Herremans, M., Tree, A.J., Parker, V. & Brown, C.J. (Eds.). 1997. The Atlas of Southern African Birds. Johannesburg: BirdLife.

Johnson, S.D. 1992. Plant-animal relationships. In R.M. Cowling. (Ed.), The Ecology of Fynbos: Nutrients, Fire and Diversity. pp. 175-205. Cape Town: Oxford University Press.

Kruger, F.J. 1979. South African heathlands. In R.L. Specht. (Ed.), Heathlands and Related Shrublands. New York: Elsevier.

Kingdon, J. 1997. The Kingdon Field Guide to African Mammals. New York: Academic Press.

Linder, H.P., Meadows, M.E. & Cowling, R.M. 1992. History of the cape flora. In R.M. Cowling. (Ed.), The Ecology of Fynbos: Nutrients, Fire and Diversity. pp. 113-134. Cape Town, Oxford University Press.

Mcmahon, L. & Fraser, M. 1988. A Fynbos Year. Cape Town & Johannesburg: David Phillip.

Mills, G. & Hes, L. (Eds.). 1997. The Complete Book of Southern African Mammals. Cape Town: Struik Winchester.

Picker, M.D. & Samways, M.J. 1996. Faunal diversity and endemism of the Cape Peninsula, South Africa. Biodiversity and Conservation 5 (5): 591-606.

Rebelo, A.G. 1992. Preservation of biotic diversity. In R.M.Cowling. (Ed.), The Ecology of Fynbos: Nutrients, Fire and Diversity. pp. 309-344. Cape Town: Oxford University Press.

Richarson, D.M., Macdonald, I.A.W., Holmes, P.M. and Cowling, R.M. 1992. Plant and animal invasions. In R.M. Cowling (Ed.). The Ecology of Fynbos: Nutrients, Fire and Diversity. pp. 271-308. Cape Town: Oxford University Press.

Rouget, M., Richardson, D.M., Cowling, R.M., Lloyd, J.W. & Lombard, A.T. 2003a. Current patterns of habitat transformation and future threats to Biodiversity in terrestrial ecosystems of the Cape Floristic Region. Biological Conservation 112: 63-85.

Rouget, M., Richardson, D.M., & Cowling, R.M. 2003b. The current configuration of protected areas in the Cape Floristic Region, South Africa: Reservation bias and representation of biodiversity patterns and processes. Biological Conservation 112: 129-145.

Sinclair, I. & Hockey, P. 1997. The Larger Illustrated Guide to Birds of Southern Africa. Cape Town: Struik Publishers.

Skelton, P. 1993. A Complete Guide to the Freshwater Fish of Southern Africa. Halfway House: Southern Book Publishers.

Vlok, J.H.J., Euston-Brown, D.I.W. & Cowling, R.M. 2003. Acocks’ Valley Bushveld 50 years on: New perspectives on the delimitation, characterization and origin of thicket vegetation. South African Journal of Botany 69: 27–51.

van Wilgen, B.W., Cowling, R.M. & Burgers, C.J. 1996. Valuation of ecosystem services: A study from South African fynbos. Bioscience 46: 184-189.

RELATED LINKS

The Botanical Society of South Africa
Cape Action Plan for People and the Environment
Cape Nature Conservation
PlantzAfrica -- Plants Native to South Africa
South African National Biodiversity Institute (SANBI)​​
South African National Parks
WWF South Africa

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See Also
 
 
 
© CI/Photo by Haroldo Castro: King Protea flower, Bontebok, Red Hot Poker flower; © CI/Photo by Olivier Langrand: Mountains and fields in Karoo National Park