|Scientific Name:||Encephalartos sclavoi De Luca, D.W.Stev. & A.Moretti|
Encephalartos sp. A
|Taxonomic Notes:||Was described as Encephalartos sp. A in the Flora of Tropical East Africa.|
|Red List Category & Criteria:||Critically Endangered B1ab(iii,v)+2ab(iii,v); D ver 3.1|
|Assessor(s):||Eastern Arc Mountains & Coastal Forests CEPF Plant Assessment Project, Donaldson, J.S.|
This species has a very small area of occupancy, is known from a single location and there is continuing decline due to loss in the extent and quality of habitat and decline in the population due to collection by traditional healers and by cycad collectors. The listing of Critically Endangered is also based on the very small population size of less than 50 mature plants.
|Previously published Red List assessments:|
|Range Description:||Known only from the type locality ("Gologolo") within Shume Magamba Forest Reserve in the western Usambara Mountains, Tanga district of northeastern Tanzania. Occurs at 1,800 to 2,100 m.|
Native:Tanzania, United Republic of
|Range Map:||Click here to open the map viewer and explore range.|
|Population:||The population size was originally estimated as 5,000-6,000 mature individuals. Recent reports (e.g. S. Trollip pers. comm. 2008) indicate that populations are declining and plants are difficult to find. It is now estimated that the population is very small, probably less than 50 mature individuals. Although there are apparently five or six subpopulations occurring along a mountain ridge, the area is more or less contiguous and cannot be regarded as six locations, but is regarded as a single location because of the nature of the threats.|
|Current Population Trend:||Decreasing|
|Habitat and Ecology:||Grows on steep, relatively dry, south facing rocky slopes in grassland and on rocky outcrops surrounded by montane forest. Occurs between rocks on sheer precipitous granite and gneiss promontories.|
|Continuing decline in area, extent and/or quality of habitat:||Yes|
|Generation Length (years):||70|
|Use and Trade:||The seeds are harvested for medicinal purposes by traditional healers and there is also collecting by cycad poachers.|
|Major Threat(s):||The seeds are harvested for medicinal purposes by traditional healers and there is also collecting by cycad poachers. The area is in a prime forestry and agricultural area, so the habitat is already and is likely to continue being impacted. The area, because of its elevation has a mild climate and is considered an ideal place to live. So increases in human settlement and further changes in land use are likely. Natural and man made fires destroy seed and seedlings.|
Occurs in the Shume Magamba Forest Reserve.
Listed in CITES Appendix I.
|Errata reason:||This errata version of the 2009 assessment was created to correct the Assessor names (and hence the assessment citation) and Reviewer names.|
Goode, D. 1989. Cycads of Africa. Struik Winchester, Cape Town.
Goode, D. 2001. Cycads of Africa. D & E Cycads of Africa, Gallo Manor, Johannesburg, South Africa.
IUCN. 2010. IUCN Red List of Threatened Species (ver. 2010.3). Available at: http://www.iucnredlist.org. (Accessed: 2 September 2010).
IUCN. 2017. The IUCN Red List of Threatened Species. Version 2017-1. Available at: www.iucnredlist.org. (Accessed: 27 April 2017).
Osborne, R. 1995. The Heenan expeditions revisited. Encephalartos 43: 16-23.
Slabbert, R. and Hurter, H. 1994. Focus on Encephalartos sclavoi. Encephalartos 37: 4-8.
Stevenson, D.W., Moretti, A. and De Luca, P. 1990. A new species of Encephalartos (Zamiaceae) from Tanzania. Memoirs of the New York Botanic. Garden 57: 156-161.
Whitelock, L.M. 2002. The Cycads. Timber Press, Portland, Oregon.
|Citation:||Eastern Arc Mountains & Coastal Forests CEPF Plant Assessment Project, Donaldson, J.S. 2010. Encephalartos sclavoi (errata version published in 2017). The IUCN Red List of Threatened Species 2010: e.T41924A114568376.Downloaded on 18 August 2018.|
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