Eastern Cape Cycad

Encephalartos altensteiniiLehm.

Plante

VULR Monde (IUCN)

Filtrer le graphe par contexte spatialPays · région · aire protégée · écorégion · biome

Graphe en cours d’indexation

Calcul du tissu écologique de Encephalartos altensteinii.

Le graphe apparaîtra automatiquement dès que le calcul est terminé (rafraîchissement toutes les 5s).

Liste rouge IUCN

VU · Vulnérablecritères A2acd↘Décroissante

Évaluation complète

Évaluation: 2022 · v3.1
Altitude: 5 – 600 m
Profondeur: – m

État de la populationTexte officiel évaluation IUCNExpert

The total population of Encephalartos altensteinii is estimated to be near 10,000 individuals. Subpopulations that have been surveyed for assessing the impacts of collecting, typically number about 500 plants.

Menaces identifiées(3 menaces classées CMP-IUCN)

1_3
Tourism & recreation areas
Rapid DeclinesMajority (50-90%)Ongoing
2_3_3
Agro-industry grazing, ranching or farming
Slow, Significant DeclinesMinority (<50%)Ongoing
5_2_1
Intentional use (species is the target)
Slow, Significant DeclinesMajority (50-90%)Ongoing

Description complète des menacesTexte détaillé évaluation IUCNExpert

Habitat destruction has been a significant problem in coastal habitats where resort developments in the main estuaries have displaced cycad habitat. Removal by collectors has also been a significant problem, especially in rural areas near King Williams Town. Bark harvesting for traditional medicinal use is endemic in the region, but has increased in recent years so that it is not uncommon to find up to 10% mortality at any one time.

Habitats préférentiels (classification IUCN)

1_5Forest - Subtropical/Tropical Dry
1_6Forest - Subtropical/Tropical Moist Lowland
3_5Shrubland - Subtropical/Tropical Dry
3_6Shrubland - Subtropical/Tropical Moist
4_5Grassland - Subtropical/Tropical Dry
6Rocky areas (eg. inland cliffs, mountain peaks)

Mesures de conservation recommandéesStratégies de conservation IUCNExpert

This species is listed in Appendix I of the CITES Appendices. The species is conserved in several protected areas, including the Waters Meeting, Kap River, and Dwesa nature reserves, and the Umtiza State Forest. An education and awareness programme as well as the long-term monitoring of the population will support the conservation of this species.

Actions de conservation (4)Conservation Actions Classification Scheme — IUCNExpert

1_1Site/area protection
1_2Resource & habitat protection
3_1_1Harvest management
4_3Awareness & communications

Stress écologiques (5)Stresses Classification — IUCNExpert

1_1Ecosystem conversion
1_1Ecosystem conversion
1_2Ecosystem degradation
2_1Species mortality
2_1Species mortality

Usage & commerce (2)Use & Trade — IUCNExpert

13Pets/display animals, horticulture
national
3Medicine - human & veterinary
subsistance

Priorités de recherche (4)Research Needed Classification — IUCNExpert

1_2Population size, distribution & trends
1_3Life history & ecology
1_6Actions
3_1Population trends

Niche IUCN globaleRealms · Systems · LMEs · Growth forms · FAOs — biogéographie IUCNExpert

Royaumes biogéographiques

Afrotropical

Systèmes (terrestre/eau douce/marin)

Terrestrial

Formes de croissance

CycadTree - large

Références bibliographiques (5)Sources scientifiques de l'évaluation IUCNExpert

IUCN. 2023. The IUCN Red List of Threatened Species. Version 2023-1. Available at: <a href="www.iucnredlist.org">www.iucnredlist.org</a>. (Accessed: 07 December 2023).
IUCN. 2022. The IUCN Red List of Threatened Species. Version 2022-1. Available at: <a href="www.iucnredlist.org">www.iucnredlist.org</a>. (Accessed: 21 July 2022).
Hill, K.D. and Stevenson, D.W. 1998 - 2006. The Cycad Pages. Available at: <a href="http://plantnet.rbgsyd.nsw.gov.au/PlantNet/cycad/index.html">http://plantnet.rbgsyd.nsw.gov.au/PlantNet/cycad/index.html</a>.
Von Breitenbach, F. and J. 1992. Tree Atlas of Southern Africa. Dendrological Foundation, Pretoria, South Africa.
Kemp, M. 1988. Focus on Encephalartos altensteinii. Encephalartos 13: 8-17.

Évaluateurs & contributeurs (3)Personnes ayant contribué à l'évaluation IUCNExpert

assessor

Bösenberg, J.D.

contributor

Donaldson, J.S.

evaluator

Donaldson, J.S.

⚠ 1 erratum publié après l'évaluation.

Bösenberg, J.D. 2022. Encephalartos altensteinii (errata version published in 2023). The IUCN Red List of Threatened Species 2022: e.T41908A243422301. Accessed on 05 May 2026.