Kei Cycad
Encephalartos princepsR.A.Dyer
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Pays · région · aire protégée · écorégion · biome
Graphe en cours d’indexation
Calcul du tissu écologique de Encephalartos princeps.
Le graphe apparaîtra automatiquement dès que le calcul est terminé (rafraîchissement toutes les 5s).
Liste rouge IUCN
VU · Vulnérablecritères A4acd; B1ab(iii,v)↘Décroissante- Évaluation
- 2022 · v3.1
- Altitude
- 200 – 800 m
- Profondeur
- – m
État de la populationTexte officiel évaluation IUCNExpert
The population is thought to number between 3,500 and 5,000 mature individuals and is declining. Encephalartos princeps used to be plentiful in the catchments areas and tributaries of the Great Kei River. Most accessible plants have long since vanished. Viable subpopulations are still to be found in remote areas where concerned landowners protect the plants (Tait 2010). The subpopulations need to be re-surveyed urgently to determine the state of decline in population numbers.
Menaces identifiées(3 menaces classées CMP-IUCN)
5_2_1Intentional use (species is the target)Rapid DeclinesMajority (50-90%)Ongoing2_3_3Agro-industry grazing, ranching or farmingNegligible declinesMajority (50-90%)Ongoing8_1_2Named speciesSlow, Significant DeclinesMinority (<50%)Ongoing
Description complète des menacesTexte détaillé évaluation IUCNExpert
This species is threatened due to the illegal collecting of plants in the wild and as a result of habitat destruction due to expanding agricultural activities. In some populations, alien invasive plants (Lantana camara) are invading the habitat.
Habitats préférentiels (classification IUCN)
3_5Shrubland - Subtropical/Tropical Dry4_5Grassland - Subtropical/Tropical Dry
Mesures de conservation recommandéesStratégies de conservation IUCNExpert
This species is listed in Appendix I of the CITES Appendices. Identification of suitable sites for the formal protection of this species is needed. An education and awareness programme as well as the long-term monitoring of subpopulations will support the conservation of this species.
Actions de conservation (3)Conservation Actions Classification Scheme — IUCNExpert
1_1Site/area protection1_2Resource & habitat protection4_3Awareness & communications
Stress écologiques (4)Stresses Classification — IUCNExpert
1_1Ecosystem conversion1_2Ecosystem degradation1_2Ecosystem degradation2_1Species mortality
Usage & commerce (2)Use & Trade — IUCNExpert
13Pets/display animals, horticultureinternationalnational16Establishing ex-situ production *national
Priorités de recherche (4)Research Needed Classification — IUCNExpert
1_2Population size, distribution & trends1_3Life history & ecology1_6Actions3_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).
- Tait, A. 2010. An account of Eastern Cape cycads in habitat. <i>Encephalartos</i> 100: 35-43.
- Grobbelaar, N. 2002. <i>CYCADS - with special reference to the southern African species</i>. Privately published by Nat Grobbelaar, Pretoria, South Africa.
- Kemp, M. 1990. Focus on <i>Encephalartos princeps</i>. <i>Encephalartos</i> 24: 3-7.
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 princeps (errata version published in 2023). The IUCN Red List of Threatened Species 2022: e.T41922A243431843. Accessed on 05 May 2026.
Distribution mondiale
Calcul de la distribution GBIF· ~10–60 s
Phénologie
Calcul du calendrier d'apparition· ~5–30 s
Consulter sur les bases externes
Observations & statuts
Cartographie