Anadelphia polychaeta
Clayton
Pays · région · aire protégée · écorégion · biome
Graphe en cours d’indexation
Calcul du tissu écologique de Anadelphia polychaeta.
Le graphe apparaîtra automatiquement dès que le calcul est terminé (rafraîchissement toutes les 5s).
Liste rouge IUCN
EN · En dangercritères B2ab(iii)↘Décroissante- Évaluation
- 2019 · v3.1
- Altitude
- 0 – 50 m
- Profondeur
- – m
État de la populationTexte officiel évaluation IUCNExpert
The overall population size of this species is unknown due to lack of available information. It is known only from six collections made between 1950 and 1985 and one collection from 1994. Although Berghen (collector number 7540) described it as frequent in 1985 in Santiaba Mandjak, Senegal it is suspected that it might not be the case anymore as no recent collections from this species were found, and a population decline is suspected, based on habitat loss.
Menaces identifiées(3 menaces classées CMP-IUCN)
1_1Housing & urban areasRapid DeclinesMinority (<50%)Ongoing2_1_2Small-holder farmingUnknownMajority (50-90%)Ongoing2_3_2Small-holder grazing, ranching or farmingUnknownUnknownOngoing
Description complète des menacesTexte détaillé évaluation IUCNExpert
This grass grows in humid coastal grasslands which are threatened by agriculture, fishing and livestock grazing (Adams 1993). The coastal areas of Guinea are high populated with more than 400 inhabitants per km2 living around the coastal cities of Conakry, Kamsar and Kindia compared to less than 20 inhabitants per km2 in rural areas (USAID 2007), while in Senegal 80% of the population is concentrated within 200 km from the coast (UNEP 2008). Satellite imagery shows urban development, rice cultivation and other agriculture in Senegal where this species was previously collected, and it is possible that its distribution within the area is much more restricted now. In Guinea, it is also visible from satellite imagery large cultivated areas in Youkounkoun, as well as in Isles Tristao although at a smaller scale.
Habitats préférentiels (classification IUCN)
4_6Grassland - Subtropical/Tropical Seasonally Wet/Flooded
Mesures de conservation recommandéesStratégies de conservation IUCNExpert
This species is known to occur in Iles Tristao Ramsar Site (IUCN and UNEP-WCMC 2018). However, small villages and agriculture are visible from satellite imagery inside this area. No information on ex situ conservation measures was found. Research is recommended to establish the current population size, distribution and trends.
Actions de conservation (4)Conservation Actions Classification Scheme — IUCNExpert
1_1Site/area protection3_4_1Captive breeding/artificial propagation3_4_2Genome resource bank4_3Awareness & communications
Stress écologiques (12)Stresses Classification — IUCNExpert
1_1Ecosystem conversion1_1Ecosystem conversion1_2Ecosystem degradation1_2Ecosystem degradation1_2Ecosystem degradation1_3Indirect ecosystem effects1_3Indirect ecosystem effects2_1Species mortality2_1Species mortality2_2Species disturbance2_2Species disturbance2_2Species disturbance
Priorités de recherche (2)Research Needed Classification — IUCNExpert
1_2Population size, distribution & 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
AnnualForb or HerbGraminoid
Références bibliographiques (10)Sources scientifiques de l'évaluation IUCNExpert
- IUCN. 2019. The IUCN Red List of Threatened Species. Version 2019-2. Available at: <a href="www.iucnredlist.org">www.iucnredlist.org</a>. (Accessed: 04 July 2019).
- GBIF. 2018. Global Biodiversity Information Facility. Available at: <a href="http://data.gbif.org/species/">http://data.gbif.org/species/</a>.
- IUCN and UNEP-WCMC. 2018. The World Database on Protected Areas (WDPA). Cambridge, U.K. Available at: <a href="www.protectedplanet.net">www.protectedplanet.net</a>.
- Dinerstein, E., Olson, D., Joshi, A., Vynne, C., Burgess, N.D., Wikramanayake, E., Hahn, N., Palminteri, S., Hedao, P., Noss, R., Hansen, M., Locke, H., Ellis, E.C., Jones, B., Barber, C.V., Hayes, R., Kormos, C., Martin, V., Crist, E., Sechrest, W., Price, L., Baillie, J.E.M., Weeden, D., Suckling, K., Davis, C., Sizer, N., Moore, R., Thau, D., Birch, T., Potapov, P., Turubanova, S., Tyukavina, A., Souza, N., Pintea, L., Brito, J.C., Llewellyn, O.A., Miller, A.G., Patzelt, A., Ghazanfar, S.A., Timberlake, J., Klöser, H., Shennan-Farpón, Y., Kindt, R., Lillesø, J.-P.B., Breugel, P., Graudal, L., Voge, M., Al-Shammari, K.F. and Saleem, M. 2017. An ecoregion-based approach to protecting half the terrestrial realm. <i>BioScience</i> bix014.
- 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.
- Lisowski, S. 2009. <i>Flore (Angiospermes) de la République de Guinée</i>. Jardin Botanique National de Belgique, Meise.
- UNEP. 2008. <i>Africa: Atlas of Our Changing Environment</i>. Division of Early Warning and Assessment (DEWA) and United Nations Environment Programme (UNEP), Nairobi, Kenya.
- USAID. 2007. Guinea Biodiversity and Tropical Forests 118/119 Assessment. United States Agency for International Development.
- Adams, W.M. 1993. Indigenous use of wetlands and sustainable development in West Africa. <i>The Geographical Journal</i> 159(2): 209-218.
- Clayton, W.D. 1966. Studies in the Gramineae: X. <i>Kew Bulletin</i> 20(2): 275-285.
Évaluateurs & contributeurs (5)Personnes ayant contribué à l'évaluation IUCNExpert
assessor
Canteiro, C. & Cheek, M.
contributor
Joachim, M.
evaluator
Diop, F.N.
facilitators
Hargreaves, S. & Clarkson, J.
institutions
Royal Botanic Gardens, Kew
Canteiro, C. & Cheek, M. 2019. Anadelphia polychaeta. The IUCN Red List of Threatened Species 2019: e.T132415703A137289728. Accessed on 05 May 2026.
Distribution mondiale
Calcul de la distribution GBIF· ~10–60 s
Phénologie
Calcul du calendrier d'apparition· ~5–30 s