Ngoye Cycad
Encephalartos ngoyanusI.Verd.
1 photo · Licences CC (Wikimedia Commons / iNaturalist)Click pour agrandir
Pays · région · aire protégée · écorégion · biome
Graphe en cours d’indexation
Calcul du tissu écologique de Encephalartos ngoyanus.
Le graphe apparaîtra automatiquement dès que le calcul est terminé (rafraîchissement toutes les 5s).
Liste rouge IUCN
VU · Vulnérablecritères B1ab(iii,v); C2a(i)↘Décroissante- Évaluation
- 2022 · v3.1
- Altitude
- 200 – 600 m
- Profondeur
- – m
État de la populationTexte officiel évaluation IUCNExpert
The population size is declining and was thought to number up to 5,000 mature individuals. The population at Ngoye forest is estimated to be less than 250 plants and plants continue to be lost at this locality. The other two main subpopulations constitute an additional approximately 1,000 plants (B. Church pers. comm. 2011) It is unknown how many plants occur in Mozambique and Eswatini but it is most likely to be small numbers. This means that the previous estimates may be high and that the total number of plants in the wild could be less than 2,500.
Menaces identifiées(3 menaces classées CMP-IUCN)
5_2_1Intentional use (species is the target)Rapid DeclinesMajority (50-90%)Ongoing7_1_1Increase in fire frequency/intensityUnknownMajority (50-90%)Ongoing2_3_2Small-holder grazing, ranching or farmingSlow, Significant DeclinesMinority (<50%)Ongoing
Description complète des menacesTexte détaillé évaluation IUCNExpert
Overgrazing and veld fires have taken their toll on wild subpopulations as far as recruitment goes and in addition, overzealous collectors have removed thousands of plants.
Habitats préférentiels (classification IUCN)
4_5Grassland - Subtropical/Tropical Dry1_5Forest - Subtropical/Tropical Dry
Mesures de conservation recommandéesStratégies de conservation IUCNExpert
This species is listed in Appendix I of the CITES Appendices. Subpopulations are found in the following reserves: Hlatikulu Forest Reserve, Ngoye Forest Reserve, Pongolapoort Nature Reserve, Mkuze Nature Reserve and the Ubombo Mountain Nature Reserve. The long-term monitoring of subpopulations will support the conservation of this species.
Actions de conservation (2)Conservation Actions Classification Scheme — IUCNExpert
1_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, horticultureinternationalnationalsubsistance16Establishing ex-situ production *national
Priorités de recherche (2)Research Needed Classification — IUCNExpert
1_2Population size, distribution & trends3_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 - small
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).
- Golding, J. (ed.). 2002. <i>Southern African Plant Red Data Lists</i>. Southern African Botanical Diversity Network.
- Scott-Shaw, C.R. 1999. <i>Rare and Threatened Plants of KwaZulu-Natal and Neighbouring Regions</i>. KwaZulu-Natal Nature Conservation Services, Pietermaritzburg.
- Giddy, C. 1990. Focus on <i>Encephalartos ngoyanus</i>. <i>Encephalartos</i> 23: 3-9.
Évaluateurs & contributeurs (3)Personnes ayant contribué à l'évaluation IUCNExpert
assessor
Bösenberg, J.D.
contributor
Church, B. & Donaldson, J.S.
evaluator
Donaldson, J.S.
⚠ 1 erratum publié après l'évaluation.
Bösenberg, J.D. 2022. Encephalartos ngoyanus (errata version published in 2023). The IUCN Red List of Threatened Species 2022: e.T41920A243430941. 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