Cycad
Encephalartos barteriCarruth. ex Miq.
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Pays · région · aire protégée · écorégion · biome
Graphe en cours d’indexation
Calcul du tissu écologique de Encephalartos barteri.
Le graphe apparaîtra automatiquement dès que le calcul est terminé (rafraîchissement toutes les 5s).
Liste rouge IUCN
VU · Vulnérablecritères A2cd+4cd↘Décroissante- Évaluation
- 2022 · v3.1
- Altitude
- 400 – 1400 m
- Profondeur
- – m
État de la populationTexte officiel évaluation IUCNExpert
Not much is known about the subpopulations in Nigeria and Benin. C. Dalzell (pers. comm.) reported that subpopulations in Ghana were large and healthy. It seems to number at least 10,000 plants.
Menaces identifiées(5 menaces classées CMP-IUCN)
7_1_1Increase in fire frequency/intensityUnknownMajority (50-90%)Ongoing7_2_10Large damsUnknownUnknownPast, Unlikely to Return2_3_4Scale Unknown/UnrecordedSlow, Significant DeclinesMajority (50-90%)Ongoing5_2_1Intentional use (species is the target)Slow, Significant DeclinesMinority (<50%)Ongoing2_1_4Scale Unknown/UnrecordedOngoing
Description complète des menacesTexte détaillé évaluation IUCNExpert
This species may be affected by too frequent fires which could prevent seedling growth. Plants are also removed from the wild by collectors. Habitat destruction due to agriculture and infrastructure development is also contributing to decline in this species, with part of the population lost due to flooding when the Volga dam was built.
Habitats préférentiels (classification IUCN)
2_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. It is unknown whether any subpopulations occur in formally protected areas. 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 (2)Conservation Actions Classification Scheme — IUCNExpert
1_1Site/area protection4_3Awareness & communications
Stress écologiques (8)Stresses Classification — IUCNExpert
1_1Ecosystem conversion1_1Ecosystem conversion1_1Ecosystem conversion1_2Ecosystem degradation1_2Ecosystem degradation1_2Ecosystem degradation2_1Species mortality2_1Species mortality
Usage & commerce (2)Use & Trade — IUCNExpert
13Pets/display animals, horticultureinternationalnational16Establishing 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
Cycad
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).
- Folega, F., Wala, K., Woegan, A.Y., Kanda, M., Dourma, M., Batawila, K. and Akpagana, K. 2018. Flore et communautés végétales des inselbergs du sud-est du Togo. <i>Physio-Géo</i> 12: 1-21.
- Ekué, M.R.M., Gailing, O., Hölscher, D., Sinsin, B. and Finkeldey, R. 2008. Population genetics of the cycad <i>Encephalartos barteri ssp. barteri</i> (Zamiaceae) in Benin with notes on leaflet morphology and implications for conservation. <i>Belgian Journal of Botany</i> 141(1): 78-94.
- 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.
- Alabi, R.O. and Oladele, F.A. 1988. Threatened habitats of <i>Encephalartos barteri</i> in Kwara state. <i>The Nigerian Field</i> 53: 23-30.
- Osborne, R. 1988. Focus on <i>Encephalartos barteri</i>. <i>Encephalartos</i> 14: 8-16.
- Newton, L.E. 1978. A new cycad subspecies from Nigeria. <i>Botanical Journal of the Linnean Society</i> 77: 125-129.
Évaluateurs & contributeurs (3)Personnes ayant contribué à l'évaluation IUCNExpert
assessor
Bösenberg, J.D.
contributor
Golding, J. & Hurter, P.J.H.
evaluator
Donaldson, J.S.
⚠ 1 erratum publié après l'évaluation.
Bösenberg, J.D. 2022. Encephalartos barteri (errata version published in 2023). The IUCN Red List of Threatened Species 2022: e.T41912A243423138. 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