
Runde Cycad
Encephalartos concinnusR.A.Dyer & I.Verd.
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Pays · région · aire protégée · écorégion · biome
Graphe en cours d’indexation
Calcul du tissu écologique de Encephalartos concinnus.
Le graphe apparaîtra automatiquement dès que le calcul est terminé (rafraîchissement toutes les 5s).
Liste rouge IUCN
CR · En danger critiquecritères A4acd↘Décroissante- Évaluation
- 2022 · v3.1
- Altitude
- 800 – 900 m
- Profondeur
- – m
État de la populationTexte officiel évaluation IUCNExpert
Surveys of the known subpopulations indicate that 58 mature plants were counted in the location at Gwanda (West Nicolson) in 1991 and remained stable when the subpopulation was assessed in 2007 (Timberlake and Mapaure 2007). This subpopulation occurs within a well protected conservancy and is considered stable. The subpopulation at Mberengwa was the largest subpopulation: in 1968, the species was regarded as common (Mapaura 2002) and was assessed as healthy with many plants in 1991 (Timberlake and Mapaure 2007). However, the subpopulation is now experiencing an ongoing decline with an estimated >500 plants in 2000, declining to ca. 300 plants in 2012 and ca. 100 plants in 2020 (I. Waters pers. comm. 2020). The third locality near Runde was the smallest and was estimated to comprise 10 plants in 1968 (Mapaura 2002) with a high threat from illegal plant collecting for the ornamental trade. The subpopulation near Runde is now considered to be extinct.
Menaces identifiées(1 menace classée CMP-IUCN)
5_2_1Intentional use (species is the target)UnknownUnknownOngoing
Description complète des menacesTexte détaillé évaluation IUCNExpert
This species has been adversely affected due to over-collecting for ornamental purposes. Reports indicate the the subpopulations at Mberengwa and Runde have been targeted by cycad collectors (Kimberley et al. 2008). In addition, the leaves of this species have been used by local people to make sleeping mats. This has caused the death of some old established plants.
Habitats préférentiels (classification IUCN)
2_1Savanna - Dry4_5Grassland - Subtropical/Tropical 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. One subpopulation, comprising 58 plants occurs in the Bubiana Conservancy. 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 protection3_4_1Captive breeding/artificial propagation4_3Awareness & communications
Stress écologiques (2)Stresses Classification — IUCNExpert
2_1Species mortality2_3_8Other
Usage & commerce (2)Use & Trade — IUCNExpert
11Other household goodssubsistance13Pets/display animals, horticultureinternationalnational
Priorités de recherche (4)Research Needed Classification — IUCNExpert
1_2Population size, distribution & trends1_3Life history & ecology1_4Harvest, use & livelihoods3_1Population trends
Niche IUCN globaleRealms · Systems · LMEs · Growth forms · FAOs — biogéographie IUCNExpert
Royaumes biogéographiques
Afrotropical
Systèmes (terrestre/eau douce/marin)
Terrestrial
Formes de croissance
CycadTree - large
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).
- Kimberley, M., Thackray, M. and Spindler, M. 2008. Zimbawe's only endemic cycad: <i>Encephalartos concinnus</i>. <i>Encephalartos</i> 94: 18-21.
- Timberlake, J. and Mapaure, I. 2007. Bubiana Conservancy. Vegetation Survey. <i>Biodiversity Foundation for Africa - Occasional publications in Biodiversity</i> 17.
- Mapaura, A. 2002. Endemic plant species of Zimbabwe. <i>Kirkia</i> 18(1): 117-148.
- Olson, D.M. and Dinerstein, E. 2002. The Global 200: Priority ecoregions for global conservation. <i>Annals of the Missouri Botanical Garden</i> 89: 125-126.
- Whitelock, L.M. 2002. <i>The Cycads</i>. Timber Press, Portland, Oregon.
- Osborne, R. 1993. Focus on <i>Encephalartos concinnus</i>. <i>Encephalartos</i> 34: 4-11.
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 concinnus (errata version published in 2023). The IUCN Red List of Threatened Species 2022: e.T41903A243424958. 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