Encephalartos delucanus
Malaisse, Sclavo & Crosiers
Pays · région · aire protégée · écorégion · biome
Graphe en cours d’indexation
Calcul du tissu écologique de Encephalartos delucanus.
Le graphe apparaîtra automatiquement dès que le calcul est terminé (rafraîchissement toutes les 5s).
Liste rouge IUCN
EN · En dangercritères B1ab(iii,v)+2ab(iii,v)↘Décroissante- Évaluation
- 2024 · v3.1
- Altitude
- 1200 – 1950 m
- Profondeur
- – m
État de la populationTexte officiel évaluation IUCNExpert
Although actual population estimates are not available, Encephalartos delucanus seems to be an extremely rare species. Heenan (1977) reported spending five weeks exploring the region west of Mpanda but only located a single plant. Heibloem (1999) spent nine days in the area and reported finding two plants. Another small cluster of plants was located during surveys of chimpanzee habitat (D. Moyer pers. comm). Earlier estimates were that the population on Mount Sitebi consisted of two groups of about 20 individuals in each cluster.
Menaces identifiées(3 menaces classées CMP-IUCN)
5_2_1Intentional use (species is the target)UnknownUnknownOngoing7_1_1Increase in fire frequency/intensityOngoing7_3Other ecosystem modificationsOngoing
Description complète des menacesTexte détaillé évaluation IUCNExpert
This species is affected by too frequent fires, which may affect regeneration and by changes in habitat management, that may also threaten the security of this species. Removal by collectors is also an issue. Reports also indicate that plants are often too far apart for effective reproduction.
Habitats préférentiels (classification IUCN)
2_1Savanna - Dry4_5Grassland - Subtropical/Tropical Dry
Mesures de conservation recommandéesStratégies de conservation IUCNExpert
This species is listed in Appendix I of the CITES Appendices. This species possibly occurs in the Ugalla River Game Reserve, however this reserve does not extend any protection to plants. Identification of suitable sites for the formal protection of this species is needed.
Actions de conservation (3)Conservation Actions Classification Scheme — IUCNExpert
1_1Site/area protection3_4_1Captive breeding/artificial propagation4_3Awareness & communications
Stress écologiques (3)Stresses Classification — IUCNExpert
1_2Ecosystem degradation1_2Ecosystem degradation2_1Species mortality
Usage & commerce (1)Use & Trade — IUCNExpert
13Pets/display animals, horticultureinternationalnational
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 - small
Références bibliographiques (6)Sources scientifiques de l'évaluation IUCNExpert
- IUCN. 2024. The IUCN Red List of Threatened Species. Version 2024-1. Available at: <a href="www.iucnredlist.org">www.iucnredlist.org</a>. (Accessed: 27 June 2024).
- Whitelock, L.M. 2002. <i>The Cycads</i>. Timber Press, Portland, Oregon.
- Jones, D.L. 2002. <i>Cycads of the World</i>. Smithsonian Institution Press, Washington, DC.
- Heibloem, P. 1999. <i>The Cycads of Central Africa</i>. Palm and Cycad Societies of Australia, Brisbane.
- Malaisse, F., Sclavo, J.-P. and Crosiers, C. 1993. Recherches sur les <i>Encephalartos</i> Lehm. (Zamiaceae) d'Afrique centrale. <i>Bull. Jard. Bot. Nat. Belg.</i> 62: 205-219.
- Heenan, D. 1977. Some observations on the cycads of Central Africa. <i>Botanical Journal of the Linnean Society</i> 74: 279-288.
Évaluateurs & contributeurs (3)Personnes ayant contribué à l'évaluation IUCNExpert
assessor
Eastern Arc Mountains & Coastal Forests CEPF Plant Assessment Project & Bösenberg, J.D.
contributor
Donaldson, J.S. & Moyer, D.
evaluator
Donaldson, J.S.
Eastern Arc Mountains & Coastal Forests CEPF Plant Assessment Project & Bösenberg, J.D. 2024. Encephalartos delucanus. The IUCN Red List of Threatened Species 2024: e.T41914A50905358. 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