
Olifants River Cycad
Encephalartos lanatusStapf & Burtt Davy
1 photo · Licences CC (Wikimedia Commons / iNaturalist)Click pour agrandir
Pays · région · aire protégée · écorégion · biome
Graphe en cours d’indexation
Calcul du tissu écologique de Encephalartos lanatus.
Le graphe apparaîtra automatiquement dès que le calcul est terminé (rafraîchissement toutes les 5s).
Liste rouge IUCN
VU · Vulnérablecritères B1ab(v)+2ab(v)↘Décroissante- Évaluation
- 2022 · v3.1
- Altitude
- 1200 – 1500 m
- Profondeur
- – m
État de la populationTexte officiel évaluation IUCNExpert
This is a locally abundant species and was previously regarded as stable due to landuse that was compatible with its survival. The populations were also relatively safe as they were not popular with cycad collectors due to their known sensitivity to disturbance and poor transplanting outcomes (Goode 1993). However, this situation seems to have changed and plants are now being illegally removed by collectors resulting in a decline in population numbers (T. Steyn pers. comm.)
Menaces identifiées(2 menaces classées CMP-IUCN)
3_2Mining & quarryingUnknownUnknownFuture5_2_1Intentional use (species is the target)Slow, Significant DeclinesMinority (<50%)Ongoing
Description complète des menacesTexte détaillé évaluation IUCNExpert
The agricultural development of the distribution area of Encephalartos lanatus would have had a minimal effect on the species due to the types of farming practices employed (Fourie 1984). The species was, in the past, also reportedly not popular with cycad collectors as these plants are sensitive to disturbance and any transplanting ends in the death of plants (Goode 1993). However, two changes now pose greater threats to this species. First, since 2015 there has been an increase in illegal collecting and this has now been recorded from a number of sites (T. Steyn pers. comm.) and, second, mining companies have applied for rights to mine in the core of the main distribution area (S. Sidersky pers. comm.)
Habitats préférentiels (classification IUCN)
3_5Shrubland - Subtropical/Tropical 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. In Gauteng province, this species is conserved in two private nature reserves and in a natural heritage site. Plants also occur in the Loskop Dam Nature Reserve and in the Botshabelo Nature Reserve. 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 (4)Stresses Classification — IUCNExpert
1_1Ecosystem conversion1_2Ecosystem degradation2_1Species mortality2_2Species disturbance
Usage & commerce (2)Use & Trade — IUCNExpert
13Pets/display animals, horticultureinternationalnational16Establishing ex-situ production *national
Priorités de recherche (3)Research Needed Classification — IUCNExpert
1_2Population size, distribution & trends1_3Life history & ecology3_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 (5)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).
- Goode, D. 1993. <i>Cycads of Africa</i>. Struik, Winchester.
- Osborne, R. 1988. Focus on <i>Encephalartos lanatus</i>. <i>Encephalartos</i> 16: 3-9.
- Fourie, S.P. 1984. Flora Conservation Plan: <i>Encephalartos lanatus</i>. Transvaal Nature Conservation Division. Internal report.
Évaluateurs & contributeurs (3)Personnes ayant contribué à l'évaluation IUCNExpert
assessor
Bösenberg, J.D.
contributor
Donaldson, J.S. & Steyn, T.
evaluator
Donaldson, J.S.
⚠ 1 erratum publié après l'évaluation.
Bösenberg, J.D. 2022. Encephalartos lanatus (errata version published in 2023). The IUCN Red List of Threatened Species 2022: e.T41933A243428225. 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