Ngotshe Cycad
Encephalartos aemulansVorster
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Pays · région · aire protégée · écorégion · biome
Graphe en cours d’indexation
Calcul du tissu écologique de Encephalartos aemulans.
Le graphe apparaîtra automatiquement dès que le calcul est terminé (rafraîchissement toutes les 5s).
Liste rouge IUCN
CR · En danger critiquecritères B1ab(v)+2ab(v)↘Décroissante- Évaluation
- 2022 · v3.1
- Altitude
- 1000 – 1100 m
- Profondeur
- – m
État de la populationTexte officiel évaluation IUCNExpert
The latest aerial counts conducted by conservation authorities estimated that there were ca. 600 plants in the population. In the past, poaching was considered to be severe and the species was therefore listed as Critically Endangered under the Red List criteria B1ab(v)+2ab(v); C2a(ii) (IUCN 2010). Early reports (Scott-Shaw 1999) estimated that there were 150 plants surviving in the wild and Donaldson and co-workers counted <100 in one part of part of the population in 1997. The aerial counts provide a more accurate assessment and not any real increase in the population.
Menaces identifiées(1 menace classée CMP-IUCN)
5_2_1Intentional use (species is the target)UnknownUnknownOngoing
Description complète des menacesTexte détaillé évaluation IUCNExpert
This species' occurrence at a single site means the plants are vulnerable to environmental perturbations. Collecting has been a problem in the past although the bulk of the plants now occur within a private nature reserve. Collecting, however, still remains an issue.
Habitats préférentiels (classification IUCN)
1_4Forest - Temperate4_4Grassland - Temperate6Rocky areas (eg. inland cliffs, mountain peaks)
Mesures de conservation recommandéesStratégies de conservation IUCNExpert
This species is listed in Appendix I of the CITES Appendices, and on national Threatened or Protected species regulations. A biodiversity management plan was published as part of the measures under the TOPS regulations. The larger part of the population occurs within a private nature reserve but this reserve has no formal protection status. Poaching of wild plants was previously evaluated as severe but seems to have reduced at this site although other cycad taxa in the region continue to decline due to illegal collecting and the threat of losing plants remains high.
Actions de conservation (4)Conservation Actions Classification Scheme — IUCNExpert
1_1Site/area protection2_1Site/area management3_4_1Captive breeding/artificial propagation4_3Awareness & communications
Stress écologiques (1)Stresses Classification — IUCNExpert
2_1Species mortality
Usage & commerce (2)Use & Trade — IUCNExpert
13Pets/display animals, horticultureinternationalnationalsubsistance16Establishing 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
CycadShrub - large
Références bibliographiques (9)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).
- Government Gazette. 2016. Biodiversity Management Plan for 11 Critically Endangered and 4 Endangered <i>Encephalartos</i> species. <i>Government Gazette</i> 40793.
- Scientific Authority. 2016. <i>Non-Detriment Findings</i>. Government Gazette, Department of Environmental Affairs.
- Scientific Authority. 2013. <i>National Environmental Management: Biodiversity Act (10/2004): Non-detriment findings</i>. Government Printer, Pretoria.
- Scott-Shaw, C.R. 1999. <i>Rare and Threatened Plants of KwaZulu-Natal and Neighbouring Regions</i>. KwaZulu-Natal Nature Conservation Services, Pietermaritzburg.
- 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. <i>Tree Atlas of Southern Africa</i>. Dendrological Foundation, Pretoria, South Africa.
- Vorster, P. 1990. <i>Encephalartos aemulans</i> (Zamiaceae), a new species from northern Natal. <i>South African Journal of Botany</i> 56(2): 239-243.
Évaluateurs & contributeurs (3)Personnes ayant contribué à l'évaluation IUCNExpert
assessor
Bösenberg, J.D.
contributor
Donaldson, J.S. & Church, B.
evaluator
Donaldson, J.S.
⚠ 1 erratum publié après l'évaluation.
Bösenberg, J.D. 2022. Encephalartos aemulans (errata version published in 2023). The IUCN Red List of Threatened Species 2022: e.T41765A243422047. 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