Nile Cycad
Encephalartos septentrionalisSchweinf.
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Pays · région · aire protégée · écorégion · biome
Graphe en cours d’indexation
Calcul du tissu écologique de Encephalartos septentrionalis.
Le graphe apparaîtra automatiquement dès que le calcul est terminé (rafraîchissement toutes les 5s).
Liste rouge IUCN
LC · Préoccupation mineure→Stable- Évaluation
- 2024 · v3.1
- Altitude
- 500 – 2500 m
- Profondeur
- – m
État de la populationTexte officiel évaluation IUCNExpert
Despite the fairly wide range, the population size is only estimated to be about 2,000 mature individuals. It is however recorded as being locally common and this population size is likely an underestimate. Available information indicates that the population is stable.
Description complète des menacesTexte détaillé évaluation IUCNExpert
The threats to this species are not known, but agricultural activities, increased droughts and poaching by collectors are all potential threats. An unconfirmed report claims that a road being built in an area south of Juba in South Sudan, had destroyed a large number of cycads. This is most likely Encephalartos septentrionalis (Q. Luke pers. comm.).
Habitats préférentiels (classification IUCN)
1_5Forest - Subtropical/Tropical Dry2_1Savanna - Dry6Rocky areas (eg. inland cliffs, mountain peaks)
Mesures de conservation recommandéesStratégies de conservation IUCNExpert
This species is listed in Appendix I of the CITES Appendices. Encephalartos septentrionalis occurs in the Imatong Mountain forest reserve in South Sudan and in the Agoru-Agu forest reserve in Uganda. Further west it occurs in the Garamba National Park and in the Bili-Uere Hunting Reserve in the Democratic Republic of the Congo. Plants are possibly present in the Bamingui-Bangoran Conservation Area in the Central African Republic. The level of protection offered in these reserves is unknown. Identification of further 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 (2)Conservation Actions Classification Scheme — IUCNExpert
1_1Site/area protection4_3Awareness & communications
Usage & commerce (1)Use & Trade — IUCNExpert
13Pets/display animals, horticultureinternationalnational
Priorités de recherche (7)Research Needed Classification — IUCNExpert
1_1Taxonomy1_2Population size, distribution & trends1_3Life history & ecology1_4Harvest, use & livelihoods1_5Threats1_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 (14)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).
- Kalema, J. and Beentje, H.J. 2012. <i>Conservation Checklist of the Trees of Uganda</i>. Royal Botanic Gardens, Kew, Richmond.
- 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.
- 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.
- Friis, I.B. and Vollesen, K. 1998. <i>Flora of the Sudan-Uganda border area east of the Nile. 1, Catalogue of vascular plants, 1st part</i>. The Royal Danish Academy of Science and Letters, Copenhagen.
- Jones, S. and Wynants, J. 1997. <i>Encephalartos macrostrobilus</i> (Zamiaceae), a new cycad species from northern Uganda. <i>Encephalartos</i> 50: 13-17.
- Osborne, R. 1997. George Schweinfurth and the discovery of <i>Encephalartos septentrionalis</i> - with some comments on the present distribution of this and allied species. <i>The Cycad Newsletter</i> 20(2): 6-11.
- Donaldson, J.S. 1995. Understanding cycad life histories- an essential basis for conservation. In: Donaldson, J.S. (ed.), <i>Cycad Conservation in South Africa- Issues, actions and priorities</i>, pp. 8-13. Cycad Society of South Africa.
- Lisowski, S. 1992. Note floristique de l'Ituri (Haut-Zaire). <i>Fragm. Flor. Geobot.</i> 37(1): 215-220.
- Heenan, D. 1977. Some observations on the cycads of Central Africa. <i>Botanical Journal of the Linnean Society</i> 74: 279-288.
- Melville, R. 1957. <i>Encephalartos</i> in Central Africa. <i>Kew Bulletin</i> 12: 237-257.
- De Saeger, H. 1956. Exploration du Parc National de la Garamba, FASCICULE 4. Institut des Parcs Nationaux du Congo Belge.
- Prain, D. 1917. Cycadaceae. <i>Flora of Tropical Africa</i> 6(2): 344-354.
Évaluateurs & contributeurs (3)Personnes ayant contribué à l'évaluation IUCNExpert
assessor
Eastern Arc Mountains & Coastal Forests CEPF Plant Assessment Project, Kalema, J. & Beentje, H.J.
contributor
Bösenberg, J.D.
evaluator
Bösenberg, J.D.
Eastern Arc Mountains & Coastal Forests CEPF Plant Assessment Project, Kalema, J. & Beentje, H.J. 2024. Encephalartos septentrionalis. The IUCN Red List of Threatened Species 2024: e.T41950A51044730. 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