Succulent Karoo

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Succulent Karoo
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Goegap Nature Reserve, South Africa
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Location of the Succulent Karoo ecoregion
Ecology
Realm Afrotropical
Biome deserts and xeric shrublands
Borders Nama Karoo, Namib Desert, Lowland fynbos and renosterveld, and Montane fynbos and renosterveld
Geography
Area102,700 km2 (39,700 sq mi)
Countries South Africa and Namibia
Conservation
Conservation status Relatively stable [1]
Protected2352 km² (2%) [1]
Map of the two Karoo ecoregions as delineated by the WWF. Satellite image from NASA. The yellow line encloses the two ecoregions. The green line separates the Succulent Karoo, on the west, from the Nama Karoo, on the east. National boundaries are shown in black. Karoo ecoregion.jpg
Map of the two Karoo ecoregions as delineated by the WWF. Satellite image from NASA. The yellow line encloses the two ecoregions. The green line separates the Succulent Karoo, on the west, from the Nama Karoo, on the east. National boundaries are shown in black.

The Succulent Karoo is a ecoregion defined by the World Wide Fund for Nature to include regions of desert in South Africa and Namibia, [2] and a biodiversity hotspot. The geographic area chosen by the WWF for what they call 'Succulent Karoo' does not correspond to the actual Karoo.

Contents

Geography

The Succulent Karoo stretches along the coastal strip of southwestern Namibia and South Africa's Northern Cape Province, where the cold Benguela Current offshore creates frequent fogs. The ecoregion extends inland into the uplands of South Africa's Western Cape Province. It is bounded on the south by the Mediterranean climate fynbos, on the east by the Nama Karoo, which has more extreme temperatures and variable rainfall, and on the north by the Namib Desert.

Flora

The Succulent Karoo is notable for the world's richest flora of succulent plants, and harbours about one-third of the world’s approximately 10,000 succulent species. 40% of its succulent plants are endemic. [3] The region is extraordinarily rich in geophytes, harbouring approximately 630 species.

Fauna

The ecoregion is a centre of diversity and endemism for reptiles and many invertebrates. Of the ecoregion’s 50 scorpion species, 22 are endemic. Monkey beetles, largely endemic to southern Africa, are concentrated in the Succulent Karoo and are important pollinators of the flora. So, too, are the Hymenoptera and masarine wasps, and colletid, fideliid, and melittid bees. [1]

Approximately 15 amphibians are found in this ecoregion, including three endemics; among the region’s 115 reptile species, 48 are endemic and 15 are strict endemics.[ clarification needed ] The Sperrgebiet region is a hotspot for an unusual tortoise, the Nama padloper. Endemism is present, but less pronounced, among the Succulent Karoo’s bird and mammal populations. [1]

Conservation

The ecoregion has been designated a biodiversity hotspot by Conservation International.

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Fynbos is a small belt of natural shrubland or heathland vegetation located in the Western Cape and Eastern Cape provinces of South Africa. This area is predominantly coastal and mountainous, with a Mediterranean climate and rainy winters. The fynbos ecoregion is within the Mediterranean forests, woodlands, and scrub biome. In fields related to biogeography, fynbos is known for its exceptional degree of biodiversity and endemism, consisting about 80% species of the Cape floral kingdom where nearly 6,000 of them are endemic. This land continues to face severe human-caused threats, but due to the many economic uses of the fynbos, conservation efforts are being made to help restore it.

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Biogeographic classification of India Wikipedia article on biogeography of India

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References

  1. 1 2 3 4 "Succulent Karoo". Terrestrial Ecoregions. World Wildlife Fund.
  2. Centre, UNESCO World Heritage. "Succulent Karoo Protected Areas - UNESCO World Heritage Centre". whc.unesco.org. Retrieved 2017-07-13.
  3. "Succulent Karoo - The Environmental Literacy Council". The Environmental Literacy Council. Retrieved 2017-07-13.