Robertson Karoo

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Typical Robertson Karoo vegetation in the hills above Karoo Desert National Botanical Garden, Worcester 1 Typical Robertson Karoo vegetation - KDNBG.jpg
Typical Robertson Karoo vegetation in the hills above Karoo Desert National Botanical Garden, Worcester

Robertson Karoo is a semi-arid vegetation type, restricted to sections of the Breede River Valley, Western Cape Province, South Africa. It is a subtype of Succulent Karoo (geographically an extension of the "Little Karoo") and is characterised by the dominance of succulent plant species, and by several endemic plants and animals.

Contents

Location and extent

This vegetation type occurs in several large patches within the Breede River Valley, in the Western Cape Province of South Africa. It occurs in the area between Worcester in the north-west, Ashton in the east, and the Riviersonderend mountains in the south.

Landscape and climate

Drosanthemum spp. Drosanthemum speciosumP1050020.JPG
Drosanthemum spp.
Aloe microstigma 1 Aloe microstigma - Robertson Karoo in Karoo Desert NBG.jpg
Aloe microstigma
Small Haworthia pumila plant 1 Small Haworthia maxima plant - Rooiberg Robertson Karoo.jpg
Small Haworthia pumila plant

Robertson Karoo typically consists of low hills and flats covered in small succulent vegetation, usually growing on rocky shale-based soils. The climate is semi-arid due to the region lying in the rainshadow of the large mountain ranges to the south-west, but the rainfall does tend to occur mainly in winter.

This vegetation type has a large number of endemic species and several endemic genera. [1]

Some associated plant species

Some associated animal species

[2]

See also

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<i>Astroloba rubriflora</i> Species of flowering plant

Astroloba rubriflora is a succulent plant found in the mountainous Karoo area around Robertson, South Africa. It is listed as a Vulnerable species on the IUCN global Red List.

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<i>Astroloba</i> Genus of flowering plants native to South Africa

Astroloba is a genus of flowering plants in the family Asphodelaceae, subfamily Asphodeloideae, native to the Cape Province of South Africa.

<i>Haworthia bayeri</i> Species of succulent

Haworthia bayeri is a species of the genus Haworthia in the family Asphodelaceae, endemic to the southern Cape Provinces in South Africa.

<i>Haworthiopsis scabra</i> Species of succulent

Haworthiopsis scabra, formerly Haworthia scabra, is a species of flowering succulent plant from arid regions of the Western and Eastern Cape Provinces, South Africa.

<i>Haworthia zantneriana</i> Species of succulent

Haworthia zantneriana is a species of the genus Haworthia in the family Asphodelaceae, subfamily Asphodeloideae, endemic to the southern parts of the Western Cape and Eastern Cape Provinces in South Africa.

<i>Conophytum ficiforme</i> Species of succulent

Conophytum ficiforme is a small South African species of succulent plant of the genus Conophytum.

<i>Haworthia arachnoidea</i> Species of succulent

Haworthia arachnoidea, locally known as "papierrosie" (paper-rose) or "spinnekopnes" (spider-nest), is the type species of the genus Haworthia, in the family Asphodelaceae, in the Western Cape Province of South Africa.

<i>Tulista pumila</i> Species of flowering plant

Tulista pumila ("Vratjiesaalwee") is a species of Tulista succulent plant, from the Western Cape, South Africa.

<i>Duvalia elegans</i> Species of plant

Duvalia elegans is a small succulent plant species, in the family Apocynaceae. It is the type species of the genus Duvalia, and it is endemic to the Western Cape Province, South Africa.

<i>Duvalia vestita</i> Species of plant

Duvalia vestita is a small succulent plant species, in the family Apocynaceae, indigenous to the southernmost part of the Western Cape Province, South Africa.

<i>Eriospermum bowieanum</i> Species of flowering plant

Eriospermum bowieanum is a species of geophytic plant of the genus Eriospermum, endemic to the Robertson Karoo region of the Western Cape Province, South Africa.

<i>Cephalophyllum purpureo-album</i> Species of succulent

Cephalophyllum purpureo-album is a plant species in the family Aizoaceae, endemic to the Western Cape Province, South Africa.

Eriospermum breviscapum is a species of geophytic plant of the genus Eriospermum, indigenous to South Africa.

Eriospermum proliferum is a species of flowering plant in the Asparagaceae family.

References

  1. "The Robertson Karoo as pastural area | JGV | African Journal of Range and Forage Science". ajol.info. Retrieved 2014-11-03.
  2. WWF article on Robertson vegetation types