Dioscorea burkilliana
J.Miège ex R.Hills & Wilkin
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Calcul du tissu écologique de Dioscorea burkilliana.
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Liste rouge IUCN
LC · Préoccupation mineure?Inconnue- Évaluation
- 2019 · v3.1
- Altitude
- – m
- Profondeur
- – m
État de la populationTexte officiel évaluation IUCNExpert
This species has a large distribution over a number of countries so it is suspected that the population is large. Despite this, in a recent survey in Benin, Dioscorea burkilliana was not seen; as such, it is considered rare and could potentially be extinct within Benin (Dansi et al. 1999). No numerical population information is available and the current population trend is unknown. Research into population status and trends is therefore recommended.
Menaces identifiées(5 menaces classées CMP-IUCN)
12_1Other threatOngoing1_1Housing & urban areasOngoing2_1_2Small-holder farmingOngoing2_3_2Small-holder grazing, ranching or farmingOngoing5_3_3Unintentional effects: (subsistence/small scale) [harvest]Ongoing
Description complète des menacesTexte détaillé évaluation IUCNExpert
Potential threats to Dioscorea in tropical Africa include habitat loss through deforestation, and expanding human settlements and associated agriculture. Additionally, they are threatened through abandonment as crop plants: reduced interest in cultivation of Dioscorea species will also likely reduce interest in their conservation management. These threats are not considered to have a major impact on this species, however, they should be monitored over a period of time to ensure that their severity does not escalate (Omosowon 2018).
Habitats préférentiels (classification IUCN)
1_6Forest - Subtropical/Tropical Moist Lowland★
Mesures de conservation recommandéesStratégies de conservation IUCNExpert
The genus Dioscorea is listed in Annex I of the International Treaty on Plant Genetic Resources for Food and Agriculture (ITPGRFA) which aims to guarantee sustainable agriculture and food security through the conservation and sustainable use of plant genetic resources for food and agriculture, as well as ensuring the fair and equitable sharing of the benefits arising out of their use (FAO 2009). There are 300 Dioscorea burkilliana germplasm accessions held by the International Institute of Tropical Agriculture in Nigeria; these accessions were collected from wild plants in Benin (Genesys Global Portal on Plant Genetic Resources 2019). It is not known to be conserved ex situ elsewhere (BGCI 2019). This species occurs in multiple protected areas across its range, so passive conservation is presumed in these localities (Protected Planet 2019); however, there is no evidence of active management or monitoring in these areas.
Stress écologiques (13)Stresses Classification — IUCNExpert
1_1Ecosystem conversion1_1Ecosystem conversion1_2Ecosystem degradation1_2Ecosystem degradation1_2Ecosystem degradation1_2Ecosystem degradation2_1Species mortality2_1Species mortality2_2Species disturbance2_2Species disturbance2_2Species disturbance2_2Species disturbance2_3_8Other
Usage & commerce (2)Use & Trade — IUCNExpert
1Food - humansubsistance17Other (free text)internationalnational
Priorités de recherche (4)Research Needed Classification — IUCNExpert
1_2Population size, distribution & trends1_5Threats3_1Population trends3_4Habitat trends
Niche IUCN globaleRealms · Systems · LMEs · Growth forms · FAOs — biogéographie IUCNExpert
Royaumes biogéographiques
Systèmes (terrestre/eau douce/marin)
Formes de croissance
Références bibliographiques (21)Sources scientifiques de l'évaluation IUCNExpert
- Genesys Global Portal on Plant Genetic Resources. 2019. Genesys. Available at: <a href="https://www.genesys-pgr.org/welcome">https://www.genesys-pgr.org/welcome</a>. (Accessed: 4 February 2019).
- Protected Planet. 2019. Protected Planet: The World Database on Protected Areas (WDPA). Cambridge, UK Available at: <a href="www.protectedplanet.net">www.protectedplanet.net</a>. (Accessed: 2019).
- IUCN. 2019. The IUCN Red List of Threatened Species. Version 2019-3. Available at: <a href="www.iucnredlist.org">www.iucnredlist.org</a>. (Accessed: 10 December 2019).
- Board of Trustees, RBG Kew. 2019. Plants of the World Online Portal. Richmond, UK Available at: <a href="http://www.plantsoftheworldonline.org">http://www.plantsoftheworldonline.org</a>.
- WCSP. 2019. World Checklist of Selected Plant Families. Available at: <a href=" http://apps.kew.org/wcsp/"> http://apps.kew.org/wcsp/</a>.
- USDA, Agricultural Research Service, National Plant Germplasm System. 2019. Germplasm Resources Information Network (GRIN-Taxonomy). Beltsville, Maryland Available at: <a href="https://npgsweb.ars-grin.gov/gringlobal/taxon/taxonomysearch.aspx">https://npgsweb.ars-grin.gov/gringlobal/taxon/taxonomysearch.aspx</a>. (Accessed: January 2019).
- Conservatoire et Jardin Botaniques de la Ville de Genève and South African National Biodiversity Institute. 2019. African Plant Database (version 3.4.0). Pretoria Available at: <a href="http://www.ville-ge.ch/musinfo/bd/cjb/africa/">http://www.ville-ge.ch/musinfo/bd/cjb/africa/</a>. (Accessed: 2019).
- Omosowon, S. 2018. 'The Enantiophyllum Clade of Dioscorea in Africa: Systematics, Distribution and Conservation Assessment' (Unpublished doctoral thesis). Department of Life Sciences, Imperial College London.
- Magwé-Tindo, J., Zapfack, L. and Sonké, B. 2018. Guinea yam (<i>Dioscorea</i> spp., Dioscoreaceae) wild relatives identified using whole plastome phylogenetic analyses. <i>Taxon</i> 67(5): 905-915.
- BGCI. 2018. Botanic Gardens Conservation International (BGCI) - Plant Search. Available at: <a href="https://www.bgci.org/plant_search.php">https://www.bgci.org/plant_search.php</a>.
- GBIF. 2018. Global Biodiversity Information Facility. Available at: <a href="http://data.gbif.org/species/">http://data.gbif.org/species/</a>.
- Yasuoka, H. 2013. Dense wild yam patches established by hunter-gatherer camps: beyond the wild yam question, toward the historical ecology of rainforests. <i>Human Ecology</i> 41(3): 465-475.
- Vincent, H., Wiersema, J., Kell, S., Fielder, H., Dobbie, S., Castañeda-Álvareza, N.P., Guarino, L., Eastwood, R., Leόn, B. and Maxted, N. 2013. A prioritized crop wild relative inventory to help underpin global food security. <i>Biological Conservation</i> 167: 265–275.
- 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.
- FAO. 2009. International Treaty on Plant Genetic Resources for Food and Agriculture (ITPGRFA) [Online]. Rome: Food and Agriculture Organisation. Available at: <a href="ftp://ftp.fao.org/docrep/fao/011/i0510e/i0510e.pdf">ftp://ftp.fao.org/docrep/fao/011/i0510e/i0510e.pdf</a>. (Accessed: 18/12/2012).
- Dansi, A., Mignouna, H.D., Zoundjihékpon, J., Sangaré, A., Asiedu, R., and Quin, F.M. 1999. Morphological diversity, cultivar groups and possible descent in the cultivated yams (<i>Dioscorea cayanensis/D. rotundata</i>) complex in Benin. <i> Genet. Resour. Crop Evol.</i> 6: 371-388.
- Nkounkou, J.S. 1993. La section <i>Enantiophyllum</i> Uline du genre <i>Dioscorea</i> L. en Afrique centrale. <i>Belgian Journal of Botany</i> 126(1): 45-70.
- Burkill, H.M. 1985. <i>The useful plants of west tropical Africa: Volume 1, Families A-D</i>. Royal Botanic Gardens, Kew, Richmond, United Kingdom.
- Burkill, H.M. 1985. <i>The Useful Plants of West Tropical Africa</i>. Royal Botanic Gardens, Kew.
- Miège, J. 1968. Dioscoreaceae. In: Hepper, F. N. (ed.), <i>Flora of west tropical Africa, 2nd edn.</i>, pp. 144-154. Crown Agents, London.
- Burkill, I.H. and Perrier, H. 1950. Dioscoréacées. In: H. Humbert (ed.), <i>Flore de Madagascar et des Comores. Vol. 44</i>, Typographie Firmin-Didot et cie, Paris.
Évaluateurs & contributeurs (4)Personnes ayant contribué à l'évaluation IUCNExpert
Omosowon, S., Allen, R., Plummer, J. & Wilkin, P. 2019. Dioscorea burkilliana. The IUCN Red List of Threatened Species 2019: e.T20743157A20755911. Accessed on 05 May 2026.