Encephalartos schaijesii

Malaisse, Sclavo & Crosiers

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 schaijesii.

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

Liste rouge IUCN

VU · Vulnérablecritères B1ab(ii,iii,v)+2ab(ii,iii,v)↘Décroissante

Évaluation complète

Évaluation: 2022 · v3.1
Altitude: 1300 – 1500 m
Profondeur: – m

État de la populationTexte officiel évaluation IUCNExpert

This species is reported to grow in small widely spread clumps. The population size is difficult to estimate but may be 1,000-5,000 mature individuals. With the inclusion of the Encephalartos flavistrobilus, this figure may be higher.

Menaces identifiées(1 menace classée CMP-IUCN)

7_1_1
Increase in fire frequency/intensity
UnknownUnknownOngoing

Description complète des menacesTexte détaillé évaluation IUCNExpert

Frequent fires may be a threat to these plants and there may be reproductive failure as the plants occur far apart.

Habitats préférentiels (classification IUCN)

2_1Savanna - 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 protection
3_4_1Captive breeding/artificial propagation
4_3Awareness & communications

Stress écologiques (1)Stresses Classification — IUCNExpert

1_2Ecosystem degradation

Priorités de recherche (5)Research Needed Classification — IUCNExpert

1_2Population size, distribution & trends
1_3Life history & ecology
1_4Harvest, use & livelihoods
1_5Threats
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

CycadShrub - small

Références bibliographiques (8)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).
Bonta, M. and Osborne, R. 2007. Cycads in the vernacular: A compendium of local names. Proceedings of the 7th International Conference on Cycad Biology, Xalapa, Mexico, January 2005. Memoirs of the New York Botanical Garden 97: 143-175.
Turner, I., Sclavo, J.-P. and Malaisse, F. 2006. Un nouvel Encephalartos Lehm. (Zamiaceae) de Zambie. Biotechnol. Agron. Soc. Environ. 10(3): 181-183.
Whitelock, L.M. 2002. The Cycads. Timber Press, Portland, Oregon.
Jones, D.L. 2002. Cycads of the World. Smithsonian Institution Press, Washington, DC.
Donaldson, J.S. 1995. Understanding cycad life histories- an essential basis for conservation. In: Donaldson, J.S. (ed.), Cycad Conservation in South Africa- Issues, actions and priorities, pp. 8-13. Cycad Society of South Africa.
Malaisse, F., Sclavo, J.-P. and Crosiers, C. 1993. Recherches sur les Encephalartos Lehm. (Zamiaceae) d'Afrique centrale. Bull. Jard. Bot. Nat. Belg. 62: 205-219.

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 schaijesii (errata version published in 2023). The IUCN Red List of Threatened Species 2022: e.T217519610A243432253. Accessed on 05 May 2026.