Dioscorea burchellii
Baker
Pays · région · aire protégée · écorégion · biome
Graphe en cours d’indexation
Calcul du tissu écologique de Dioscorea burchellii.
Le graphe apparaîtra automatiquement dès que le calcul est terminé (rafraîchissement toutes les 5s).
Liste rouge IUCN
VU · Vulnérablecritères B1ab(iii)↘Décroissante- Évaluation
- 2017 · v3.1
- Altitude
- 180 – 460 m
- Profondeur
- – m
État de la populationTexte officiel évaluation IUCNExpert
Population size for this species is not known.
Menaces identifiées(7 menaces classées CMP-IUCN)
1_3Tourism & recreation areasRapid DeclinesUnknownOngoing2_2_2Agro-industry plantationsRapid DeclinesUnknownOngoing8_1_2Named speciesSlow, Significant DeclinesUnknownOngoing8_1_2Named speciesSlow, Significant DeclinesUnknownOngoing8_1_2Named speciesSlow, Significant DeclinesUnknownOngoing8_1_2Named speciesSlow, Significant DeclinesUnknownOngoing8_1_2Named speciesSlow, Significant DeclinesUnknownOngoing
Description complète des menacesTexte détaillé évaluation IUCNExpert
The fynbos habitat this species is endemic to is decreasing mainly due to coastal development, agricultural and commercial forestry expansion, and alien invasive species. The long-standing presence of commercial forestry has contributed to the high number of invasive species in the area. Fynbos is particularly susceptible to the invasion of trees and large shrubs (such as Pinus, Acacia, Hakea and Eucalyptus) that shade out indigenous plants, increase water consumption and modify soil properties (Baard and Kraaii 2014).
Habitats préférentiels (classification IUCN)
3_8Shrubland - Mediterranean-type Shrubby Vegetation★
Mesures de conservation recommandéesStratégies de conservation IUCNExpert
Although Dioscorea burchellii is found in the Garden Route National Park, anthropogenic and ecological disturbances have resulted in this protected area possessing the second highest invasive species richness out of South African National Parks, and fynbos is the most threatened natural habitat from these invasive species (Baard and Kraaii 2014). This species was previously assessed as Least Concern by SANBI (Foden and Potter 2005). There are no ex situ collections of this species and ex situ conservation is recommended (BGCI 2017).
Actions de conservation (3)Conservation Actions Classification Scheme — IUCNExpert
1_2Resource & habitat protection2_2Invasive/problematic species control3_4_2Genome resource bank
Stress écologiques (22)Stresses Classification — IUCNExpert
1_1Ecosystem conversion1_1Ecosystem conversion1_2Ecosystem degradation1_2Ecosystem degradation1_2Ecosystem degradation1_2Ecosystem degradation1_2Ecosystem degradation1_2Ecosystem degradation1_2Ecosystem degradation2_1Species mortality2_2Species disturbance2_2Species disturbance2_2Species disturbance2_2Species disturbance2_2Species disturbance2_2Species disturbance2_2Species disturbance2_3_2Competition2_3_2Competition2_3_2Competition2_3_2Competition2_3_2Competition
Priorités de recherche (4)Research Needed Classification — IUCNExpert
1_2Population size, distribution & trends2_2Area-based Management Plan3_1Population trends3_4Habitat trends
Niche IUCN globaleRealms · Systems · LMEs · Growth forms · FAOs — biogéographie IUCNExpert
Royaumes biogéographiques
Afrotropical
Systèmes (terrestre/eau douce/marin)
Terrestrial
Formes de croissance
GeophyteVines
Références bibliographiques (7)Sources scientifiques de l'évaluation IUCNExpert
- IUCN. 2017. The IUCN Red List of Threatened Species. Version 2017-3. Available at: <a href="www.iucnredlist.org">www.iucnredlist.org</a>. (Accessed: 5 December 2017).
- BGCI. 2017. PlantSearch. Botanic Gardens Conservation International, London. Available at: <a href="https://www.bgci.org/plant_search.php">https://www.bgci.org/plant_search.php</a>.
- Govaerts, R., Wilkin, P., Raz, L. and Téllez-Valdés, O. 2016. World Checklist of Dioscoreaceae. Facilitated by the Royal Botanic Gardens, Kew. Available at: <a href="http://apps.kew.org/wcsp/">http://apps.kew.org/wcsp/</a>. (Accessed: 21 November 2016).
- Baard, J.A. and Kraaij, T. 2014. Alien flora of the Garden Route National Park, South Africa. <i>South African Journal of Botany</i> 94: 51-63.
- Bachman, S., Moat, J., Hill, A.W., de la Torre, J. and Scott, B. 2011. Supporting Red List threat assessments with GeoCAT: geospatial conservation assessment tool. In: V. Smith and L. Penev (eds) e-Infrastructures for data publishing in biodiversity science. <i>Zookeys</i> 150: 117–126.
- Foden, W. and Potter, L. 2005. <i>Dioscorea burchellii</i> Baker. National Assessment: Red List of South African Plants version 2015.1. Available at: <a href="http://redlist.sanbi.org/species.php?species=1777-3">http://redlist.sanbi.org/species.php?species=1777-3</a>. (Accessed: 11 November 2016).
- Archibald, E.E.A. 1967. The genus <i>Dioscorea</i> in the Cape Province west of East London. <i>Journal of South African Botany</i> 33(1): 1-46.
Évaluateurs & contributeurs (5)Personnes ayant contribué à l'évaluation IUCNExpert
assessor
Hills, R. & Wilkin, P.
contributor
von Staden, L.
evaluator
von Staden, L.
facilitators
Bachman, S.
institutions
Royal Botanic Gardens, Kew
Hills, R. & Wilkin, P. 2017. Dioscorea burchellii. The IUCN Red List of Threatened Species 2017: e.T100890094A100890096. Accessed on 05 May 2026.
Distribution mondiale
Calcul de la distribution GBIF· ~10–60 s
Phénologie
Calcul du calendrier d'apparition· ~5–30 s