Albany Cycad
Encephalartos latifronsLehm.
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Pays · région · aire protégée · écorégion · biome
Graphe en cours d’indexation
Calcul du tissu écologique de Encephalartos latifrons.
Le graphe apparaîtra automatiquement dès que le calcul est terminé (rafraîchissement toutes les 5s).
Liste rouge IUCN
CR · En danger critiquecritères A2acd; C1+2a(i)↘Décroissante- Évaluation
- 2022 · v3.1
- Altitude
- 200 – 600 m
- Profondeur
- – m
État de la populationTexte officiel évaluation IUCNExpert
The current wild population is estimated at 70 mature individuals based on recent surveys as part of a PhD study (Swart 2019) and additional surveys to collect DNA material in 2020. This includes plants not previously captured in surveys such as those carried out to gather DNA material, where fewer than 60 plants were recorded in the wild (Da Silva et al. 2012).
A study of the conservation genetics of both in situ and ex situ subpopulations of Encephalartos latifrons (Da Silva et al. 2012) showed that there is relatively little variation between subpopulations suggesting that all the remaining plants belong to what was once a single large population with relatively high levels of geneflow between subpopulations. The study also showed that there is a high level of genetic variation within the remaining population (high proportions of polymorphic loci, moderate to high Nei’s and Shannon’s diversity indices, as well as moderate levels of heterozygosity). This is greater than in many other cycad species where there tends to be low genetic variation within populations.
A study of the conservation genetics of both in situ and ex situ subpopulations of Encephalartos latifrons (Da Silva et al. 2012) showed that there is relatively little variation between subpopulations suggesting that all the remaining plants belong to what was once a single large population with relatively high levels of geneflow between subpopulations. The study also showed that there is a high level of genetic variation within the remaining population (high proportions of polymorphic loci, moderate to high Nei’s and Shannon’s diversity indices, as well as moderate levels of heterozygosity). This is greater than in many other cycad species where there tends to be low genetic variation within populations.
Menaces identifiées(3 menaces classées CMP-IUCN)
2_1_3Agro-industry farmingSlow, Significant DeclinesMinority (<50%)Past, Unlikely to Return2_1_2Small-holder farmingPast, Unlikely to Return5_2_1Intentional use (species is the target)Very Rapid DeclinesMajority (50-90%)Ongoing
Description complète des menacesTexte détaillé évaluation IUCNExpert
Encephalartos latifrons now occurs in areas where the predominant land uses are cultivation (pineapples and chicory) as well as stock farming. The impact of land use on E. latifrons is difficult to assess, but the early reports of Pearson (unpublished letters) and Chamberlain (1919) imply that at least some habitat was lost as a result of agricultural activity. Repeat photography, using photographs first taken between 1906 and 1945, indicated that all the plants occurring at seven different sites had disappeared by 1996 (Donaldson and Bösenberg 1999). However, this cannot be attributed directly to land use as, in most cases, the areas in which the plants occurred were neither ploughed nor cleared.
Trade in cycads is currently the greatest threat and probably explains the decline observed in the repeat photography study. The removal of relatively large numbers of plants by collectors has been recorded with some plants recovered by law enforcement and conservation agencies. The demand for wild collected plants remains high because E. latifrons is regarded as scarce and it is one of the most highly valued species in the cycad trade.
Population modelling of other species of Encephalartos (Raimondo and Donaldson 2003) showed that species such as E. latifrons are extremely sensitive to the removal of adult plants because population persistence over long periods relies on adult survival and not seedling recruitment. As a result, the species is very vulnerable to trade in mature plants.
It also seems likely that the natural pollinators are extinct. No natural seed set has been recorded in recent years and the current cohort of adult plants indicates that the last recruitment event was more than 50 years ago.
Trade in cycads is currently the greatest threat and probably explains the decline observed in the repeat photography study. The removal of relatively large numbers of plants by collectors has been recorded with some plants recovered by law enforcement and conservation agencies. The demand for wild collected plants remains high because E. latifrons is regarded as scarce and it is one of the most highly valued species in the cycad trade.
Population modelling of other species of Encephalartos (Raimondo and Donaldson 2003) showed that species such as E. latifrons are extremely sensitive to the removal of adult plants because population persistence over long periods relies on adult survival and not seedling recruitment. As a result, the species is very vulnerable to trade in mature plants.
It also seems likely that the natural pollinators are extinct. No natural seed set has been recorded in recent years and the current cohort of adult plants indicates that the last recruitment event was more than 50 years ago.
Habitats préférentiels (classification IUCN)
3_5Shrubland - Subtropical/Tropical Dry3_8Shrubland - Mediterranean-type Shrubby Vegetation4_5Grassland - Subtropical/Tropical Dry
Mesures de conservation recommandéesStratégies de conservation IUCNExpert
This species is listed in Appendix I of the CITES Appendices and is listed in the national Threatened or Protected Species regulations, which prohibit trade in wild plants. None of the plants occur naturally within any reserves but mature plants were replanted in one reserve after they were illegally removed from the wild. These plants are now established but no natural reproduction takes place due to the absence of insect pollinators.
A Population and Habitat Viability Assessment was developed in July 2006 and this was followed by the development of a species management plan in 2009. The plan has been implemented since 2010.
Ex situ conservation collections have also been established at several botanic gardens. One of the largest, is at Kirstenbosch National Botanical Garden, which has 19 mature plants. Genetic studies showed that the Kirstenbosch collection has similar levels of genetic diversity to wild stocks and represents all wild genotype groups.
A Population and Habitat Viability Assessment was developed in July 2006 and this was followed by the development of a species management plan in 2009. The plan has been implemented since 2010.
Ex situ conservation collections have also been established at several botanic gardens. One of the largest, is at Kirstenbosch National Botanical Garden, which has 19 mature plants. Genetic studies showed that the Kirstenbosch collection has similar levels of genetic diversity to wild stocks and represents all wild genotype groups.
Actions de conservation (4)Conservation Actions Classification Scheme — IUCNExpert
1_1Site/area protection2_1Site/area management3_3_1Reintroduction4_3Awareness & communications
Stress écologiques (7)Stresses Classification — IUCNExpert
1_1Ecosystem conversion1_1Ecosystem conversion1_2Ecosystem degradation1_2Ecosystem degradation2_1Species mortality2_3_4Loss of pollinator2_3_8Other
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_5Threats3_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 (17)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).
- Swart, C., Rowswell, R., Donaldson, J. and Barker, N. 2019. Population structure and survival of the critically endangered cycad <i>Encephalartos latifrons</i> in South Africa. <i>South African Journal of Botany</i> 127: 80-90.
- Swart, C. 2019. The conservation, ecology, and distribution of the critically endangered <i>Encephalartos latifrons</i> Lehm. Department of Botany, Rhodes University.
- Scientific Authority. 2016. <i>Non-Detriment Findings</i>. Government Gazette, Department of Environmental Affairs.
- Scientific Authority. 2013. <i>National Environmental Management: Biodiversity Act (10/2004): Non-detriment findings</i>. Government Printer, Pretoria.
- Da Silva, J.M., Donaldson, J.S., Reeves, G. and Hedderson, T.A. 2012. Population genetics and conservation of critically small cycad populations: a case study of the Albany Cycad, <i>Encephalartos latifrons</i> (Lehmann). <i>Biological Journal of the Linnean Society</i> 105: 293-308.
- Department of Environmental Affairs. 2011. Biodiversity Management Plan for <i>Encephalartos latifrons</i>. Pretoria.
- Daly, B., Donaldson, J.S., Friedmann, Y., Hahndiek, Q., King, N. Newton, D. and Southwood, A. (editors). 2006. Albany Cycad (<i>Encephalartos latifrons</i>) Population and Habitat Viability Assessment Workshop Report. Conservation Breeding Specialist Group (SSC / IUCN) / CBSG Southern Africa. Endangered Wildlife Trust, Johannesburg.
- Raimondo, D.C. and Donaldson, J.S. 2003. Responses of cycads with different life histories to the impact of plant collecting: simulation models to determine important life history stages and population recovery times. <i>Biological Conservation</i> 111: 345-358.
- Whitelock, L.M. 2002. <i>The Cycads</i>. Timber Press, Portland, Oregon.
- Goode, D. 2001. <i>Cycads of Africa</i>. D & E Cycads of Africa, Gallo Manor, Johannesburg, South Africa.
- Donaldson, J.S, and Bösenberg, J.D. 1999. Changes in the abundance of South African cycads during the 20th century: preliminary data from the study of matched photographs. In: C.-J. Chen (ed.), <i>Biology and Conservation of Cycads. Proceedings of the 4th International Conference on Cycad Biology</i>, Academic Publishers, Beijing.
- Norstog, K.J. and Nicholls, T.J. 1997. <i>The Biology of the Cycads</i>. Cornell University Press, Ithaca, New York, USA.
- Goode, D. 1989. <i>Cycads of Africa</i>. Struik Winchester, Cape Town.
- Kemp, M. 1986. Focus on <i>Encephalartos latifrons</i>. <i>Encephalartos</i> 8: 8-15.
- Chamberlain, C.J. 1919. <i>The Living Cycads</i>. The University of Chicago Press, Chicago.
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 latifrons (errata version published in 2023). The IUCN Red List of Threatened Species 2022: e.T41892A243428451. 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
Note nomenclaturale & synonymesDétails taxonomiques + synonymes CoLExpert
Note nomenclaturale
TAXREF v18 — INPN/MNHNSynonymes (3)— redirigent vers cette page
- Encephalartos horridus subsp. latifrons(Lehm.) Miq.
- Encephalartos horridus var. latifrons(Lehm.) Miq.
- Encephalartos horridus var. latifrons(Lehm.) J.Schust.
Sources : Catalogue of Life Cross-References (synonymes) · TAXREF v18 INPN/MNHN (commentaires FR).