Angraecum astroarche

Ridl.

Plante

EXLR Monde (IUCN)

Filtrer le graphe par contexte spatialPays · région · aire protégée · écorégion · biome

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Calcul du tissu écologique de Angraecum astroarche.

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Liste rouge IUCN

EX · Éteinte

Évaluation complète

Évaluation: 2018 · v3.1
Altitude: 900 – 900 m
Profondeur: – m

État de la populationTexte officiel évaluation IUCNExpert

The population of Angraecum astroarche is thought to have declined because the species habitat has been degraded by selective logging. Angraecum astroarche was known from one subpopulation in the northern part of São Tomé Island. The species is presumed to be extinct.

Menaces identifiées(3 menaces classées CMP-IUCN)

2_1_1
Shifting agriculture
Past, Unlikely to Return
2_1_2
Small-holder farming
Past, Unlikely to Return
5_3_3
Unintentional effects: (subsistence/small scale) [harvest]
Past, Unlikely to Return

Description complète des menacesTexte détaillé évaluation IUCNExpert

Angraecum astroarche was threatened by shifting agriculture and selective logging for construction of houses and domestic use. No plants are known from any protected areas. The species is only known from the type specimen collected in 1888 at Nova Moca. Since then, there have been no further collections of the species despite intensive field surveys made in the region.

Habitats préférentiels (classification IUCN)

1_6Forest - Subtropical/Tropical Moist Lowland

Mesures de conservation recommandéesStratégies de conservation IUCNExpert

Angraecum astroarche resembles Diaphananthe rutila and could therefore be confused with it. Additional surveys are needed to see if the species can be relocated at Nova Moca.

Actions de conservation (6)Conservation Actions Classification Scheme — IUCNExpert

1_1Site/area protection
1_2Resource & habitat protection
3_4_1Captive breeding/artificial propagation
3_4_2Genome resource bank
4_1Formal education
4_3Awareness & communications

Stress écologiques (9)Stresses Classification — IUCNExpert

1_2Ecosystem degradation
1_2Ecosystem degradation
1_2Ecosystem degradation
2_2Species disturbance
2_2Species disturbance
2_2Species disturbance
2_3_7Reduced reproductive success
2_3_7Reduced reproductive success
2_3_7Reduced reproductive success

Priorités de recherche (5)Research Needed Classification — IUCNExpert

1_2Population size, distribution & trends
1_3Life history & ecology
1_5Threats
3_1Population trends
3_4Habitat trends

Niche IUCN globaleRealms · Systems · LMEs · Growth forms · FAOs — biogéographie IUCNExpert

Royaumes biogéographiques

Afrotropical

Systèmes (terrestre/eau douce/marin)

Terrestrial

Formes de croissance

Epiphyte

Références bibliographiques (4)Sources scientifiques de l'évaluation IUCNExpert

IUCN. 2018. The IUCN Red List of Threatened Species. Version 2018-1. Available at: <a href="www.iucnredlist.org">www.iucnredlist.org</a>. (Accessed: 28 June 2018).
IUCN Standards and Petitions Subcommittee. 2016. Guidelines for Using the IUCN Red List Categories and Criteria. Version 12. Prepared by the Standards and Petitions Subcommittee. Available at: <a href="http://www.iucnredlist.org/documents/RedListGuidelines.pdf">http://www.iucnredlist.org/documents/RedListGuidelines.pdf</a>.
Droissart, V. 2009. Etude taxonomique et biogéographique des plantes endémiques d’Afrique centrale atlantique: le cas des Orchidaceae. Laboratoire de Botanique systématique et de Phytosociologie, Université Libre de Bruxelles.
Stévart, T. and de Oliveira, F. 2000. <i>Guide des orchidées de São Tomé et Príncipe</i>. ECOFAC, São Tomé.

Évaluateurs & contributeurs (2)Personnes ayant contribué à l'évaluation IUCNExpert

assessor

Simo-Droissart, M., Stévart, T. & Droissart, V.

evaluator

Lowry II, P.P., Schatz, G.E., Onana, J.-M. & Rankou, H.

Simo-Droissart, M., Stévart, T. & Droissart, V. 2018. Angraecum astroarche. The IUCN Red List of Threatened Species 2018: e.T87583728A87739867. Accessed on 05 May 2026.