Ontologia
Kaapsehoop Cycad

Kaapsehoop Cycad

Encephalartos laevifoliusStapf & Burtt Davy

CRLR Monde (IUCN)
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Pays · région · aire protégée · écorégion · biome

Graphe en cours d’indexation

Calcul du tissu écologique de Encephalartos laevifolius.

Le graphe apparaîtra automatiquement dès que le calcul est terminé (rafraîchissement toutes les 5s).

Liste rouge IUCN

CR · En danger critiquecritères A2acde; C1+2a(i,ii); DDécroissante
Évaluation complète
Évaluation
2022 · v3.1
Altitude
9501800 m
Profondeur
m
État de la populationExpert
Available data suggest that there are fewer than 50 plants remaining in the wild and possibly even less than that. The population originally consisted of a relatively large subpopulation in the Kaapsehoop area (early estimates of 1,700 plants) with smaller subpopulations occurring at Mariepskop (75 stems counted in 1970), Eswatini (25 plants) and KwaZulu Natal. Population surveys in 1990 (K. Zunckel MSc) counted 578 plants at Kaapsehoop, 182 on nearby farms and only 55 stems at Mariepskop. Zunckel (1990) estimated that poaching was resulting in the loss of one plant a month at the more accessible sites. By 2016, it was estimated that the population had declined by 97% due to poaching to supply the horticultural trade and private collections (Scientific Authority 2016). The subpopulations in KwaZulu Natal, Eswatini and Mariepskop had by then all been extirpated. Surveys underway in 2020-2021 detected only a single plant in the Kaapsehoop area (W. van Staden pers. comm.) and there is one other known site with 5-10 mature plants. Given the extremely low numbers and wide separation of the surviving plants, it should be regarded as functionally extinct in the Wild.

Menaces identifiées(4 menaces classées CMP-IUCN)

  • 2_2_2
    Agro-industry plantations
    Negligible declinesMajority (50-90%)Ongoing
  • 8_1_1
    Unspecified species
    Slow, Significant DeclinesMajority (50-90%)Ongoing
  • 5_2_1
    Intentional use (species is the target)
    Very Rapid DeclinesWhole (>90%)Ongoing
  • 8_2_1
    Unspecified species
    Ongoing
Description complète des menacesExpert
The most drastic effect has been by over-collecting for ornamental purposes and this is responsible for >97% decline since the 1970s. Signs of stem harvesting for traditional medicine have been observed although this has not been quantified. Evidence of plant pathogens have been reported since the 1980s with the infection occurring in female cones and resulting in abortion of cones. There is a limited threat associated with habitat loss due to timber plantations and alien invasive plants.

Habitats préférentiels (classification IUCN)

  • 3_5Shrubland - Subtropical/Tropical Dry
  • 4_5Grassland - Subtropical/Tropical Dry
  • 6Rocky areas (eg. inland cliffs, mountain peaks)
Mesures de conservation recommandéesExpert
This species is listed in Appendix I of the CITES Appendices. Subpopulations used to occur in three protected areas: Starvation Creek Nature Reserve and the Blyde Rivierpoort Reseave in South Africa; Malolotja Reserve in Eswatini. The most critical conservation measure now is to secure genetically representative material in assurance colonies to provide genetic material for possible recovery and reintroduction.
Actions de conservation (4)Expert
  • 1_1Site/area protection
  • 1_2Resource & habitat protection
  • 3_2Species recovery
  • 4_3Awareness & communications
Stress écologiques (6)Expert
  • 1_1Ecosystem conversion
  • 1_2Ecosystem degradation
  • 1_2Ecosystem degradation
  • 2_1Species mortality
  • 2_1Species mortality
  • 2_3_7Reduced reproductive success
Usage & commerce (2)Expert
  • 13Pets/display animals, horticulture
    internationalnationalsubsistance
  • 3Medicine - human & veterinary
    subsistance
Priorités de recherche (3)Expert
  • 1_2Population size, distribution & trends
  • 1_3Life history & ecology
  • 3_1Population trends
Niche IUCN globaleExpert

Royaumes biogéographiques

Afrotropical

Systèmes (terrestre/eau douce/marin)

Terrestrial

Formes de croissance

CycadTree - large
Références bibliographiques (10)Expert
  1. 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).
  2. 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).
  3. Government Gazette. 2016. Biodiversity Management Plan for 11 Critically Endangered and 4 Endangered <i>Encephalartos</i> species. <i>Government Gazette</i> 40793.
  4. Scientific Authority. 2016. <i>Non-Detriment Findings</i>. Government Gazette, Department of Environmental Affairs.
  5. Scientific Authority. 2013. <i>National Environmental Management: Biodiversity Act (10/2004): Non-detriment findings</i>. Government Printer, Pretoria.
  6. Grobbelaar, N. 2002. <i>CYCADS - with special reference to the southern African species</i>. Privately published by Nat Grobbelaar, Pretoria, South Africa.
  7. Emery, A.J., Lötter, M. and Williamson, S.D. 2002. Determining the conservation value of land in Mpumalanga. Available at: <a href="http://www.dwaf.gov.za/sfra/SEA/usutu-mhlathuze%20wma/Biophysical%20Component/Mpumalanga%20Biobase.pdf">http://www.dwaf.gov.za/sfra/SEA/usutu-mhlathuze%20wma/Biophysical%20Component/Mpumalanga%20Biobase.pdf</a>.
  8. Scott-Shaw, C.R. 1999. <i>Rare and Threatened Plants of KwaZulu-Natal and Neighbouring Regions</i>. KwaZulu-Natal Nature Conservation Services, Pietermaritzburg.
  9. Zunckel, K. 1990. The ecology and management of the Kaapsehoop cycad (<i>Encephalartos laevifolius</i> Stapf and Burtt Davy). University of Cape Town. University of Cape Town.
  10. Osborne, R. 1989. Focus on <i>Encephalartos laevifolius</i>. <i>Encephalartos</i> 19: 2-8.
Évaluateurs & contributeurs (3)Expert
assessor
Bösenberg, J.D.
contributor
Steyn, T., Rodgers, S. & Donaldson, J.S.
evaluator
Donaldson, J.S.
1 erratum publié après l'évaluation.

Bösenberg, J.D. 2022. Encephalartos laevifolius (errata version published in 2023). The IUCN Red List of Threatened Species 2022: e.T41891A243427920. Accessed on 05 May 2026.

Répartition mondiale (heatmap GBIF)Construction en cours

0 obs · 0 cellules
Construction par partitions temporelles GBIF0%

Source : GBIF — observations agrégées par hexagones 0.2° × 0.2° (~22km). Filtre qualité : précision coordonnée < 10 km. Coloration quantile (q50/70/90/99). Fond carte : OpenFreeMap · © OpenStreetMap.

Distribution mondiale

Calcul de la distribution GBIF· ~10–60 s

Phénologie

Calcul du calendrier d'apparition· ~5–30 s

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Observations & statuts

Cartographie

Bibliographie