Aeranthes ramosa

Rolfe

Plante

VULR Monde (IUCN)

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

Pas d'interactions documentées pour cette espèce.

Liste rouge IUCN

VU · Vulnérablecritères A4c; B2ab(i,ii,iii,iv,v)↘Décroissante

Évaluation complète

Évaluation: 2025 · v3.1
Altitude: 530 – 1500 m
Profondeur: – m

État de la populationTexte officiel évaluation IUCNExpert

The population of Aeranthes ramosa is currently thought to be decreasing since the species' habitat is threatened by forest clearing due to mining activities, and forest degradation by selective logging, timber harvesting for small-scale subsistence use, and slash-and-burn agricultural practices (tavy). The number of individuals of A. ramosa is not known and cannot be estimated since the species is an epiphyte on the trunk or branches of trees in humid, and subhumid forests.

Menaces identifiées(4 menaces classées CMP-IUCN)

5_2_1
Intentional use (species is the target)
Negligible declinesMinority (<50%)Ongoing
2_1_1
Shifting agriculture
Very Rapid DeclinesMinority (<50%)Ongoing
3_2
Mining & quarrying
Very Rapid DeclinesMajority (50-90%)Ongoing
5_3_3
Unintentional effects: (subsistence/small scale) [harvest]
Ongoing

Description complète des menacesTexte détaillé évaluation IUCNExpert

The species is threatened by intense human pressure such as forests clearing (mining activities), forest degradation (selective logging, small-scale agriculture, timber harvesting for subsistence, and slash-and-burn agriculture practices (tavy). Aeranthes ramosa is also threatened by illegal collection in the field.

Habitats préférentiels (classification IUCN)

1_6Forest - Subtropical/Tropical Moist Lowland
1_9Forest - Subtropical/Tropical Moist Montane

Mesures de conservation recommandéesStratégies de conservation IUCNExpert

Twelve occurrences have been recorded in six protected areas, the Protected Harmonious Landscape of the Anjozorobe-Angavo Complex, the Tampoketsa Analamaitso Special Reserve, the Protected Harmonious Landscape of the Loky-Manambato, the Makira Natural Park, the Analamazaotra National Park, and the Natural Resources Reserve of the Ankeniheny-Zahamena Corridor (CAZ). The species is included in Appendix II of CITES. It has been also brought to cultivation at Ambalabe, Ambatovy and Antananarivo shade houses.

Actions de conservation (5)Conservation Actions Classification Scheme — IUCNExpert

1_2Resource & habitat protection
2_1Site/area management
3_4_1Captive breeding/artificial propagation
3_4_2Genome resource bank
4_3Awareness & communications

Stress écologiques (12)Stresses Classification — IUCNExpert

1_1Ecosystem conversion
1_1Ecosystem conversion
1_2Ecosystem degradation
1_2Ecosystem degradation
1_2Ecosystem degradation
1_2Ecosystem degradation
2_1Species mortality
2_1Species mortality
2_1Species mortality
2_2Species disturbance
2_2Species disturbance
2_2Species disturbance

Usage & commerce (1)Use & Trade — IUCNExpert

13Pets/display animals, horticulture
internationalnationalsubsistance

Priorités de recherche (7)Research Needed Classification — IUCNExpert

1_2Population size, distribution & trends
1_3Life history & ecology
1_4Harvest, use & livelihoods
1_5Threats
3_1Population trends
3_2Harvest level 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 (6)Sources scientifiques de l'évaluation IUCNExpert

IUCN. 2025. The IUCN Red List of Threatened Species. Version 2025-1. Available at: <a href="www.iucnredlist.org">www.iucnredlist.org</a>. (Accessed: 27 March 2025).
IUCN Standards and Petitions Committee. 2022. Guidelines for Using the IUCN Red List Categories and Criteria. Version 15. Prepared by the Standards and Petitions Committee. Available at: <a href="https://nc.iucnredlist.org/redlist/content/attachment_files/RedListGuidelines.pdf">https://nc.iucnredlist.org/redlist/content/attachment_files/RedListGuidelines.pdf</a>.
GeoCAT. 2022. Geospatial conservation assessment tool (GeoCAT). Available at: <a href="http://geocat.kew.org">http://geocat.kew.org</a>.
Madagascar Catalogue. 2022. Aeranthes ramosa Rolfe. St Louis, U.S.A. and Antananarivo, Madagascar. Missouri Botanical Garden. Available at: <a href="http://legacy.tropicos.org/Name/23502540?projectid=17">http://legacy.tropicos.org/Name/23502540?projectid=17</a>. (Accessed: 2022).
Cribb, P. and Hermans, J. 2009. Field Guide to the Orchids of Madagascar. Royal Botanic Gardens, Kew.
Du Puy, D., Hermans, J and Hermans, C. 1999. The Orchids of Madagascar. Royal Botanic Gardens, Kew.

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

assessor

Ramandimbisoa, B., Ravololomanana, N., Stévart, T., Faranirina, L., Andriamahefarivo, L., Rabarimanarivo, M., Rajaovelona, L.R., Andriambololonera, S. & Droissart, V.

evaluator

Manjato, N., Rakotoarinivo, M., Rakotonasolo, F. & Razafindrahaja, V.

Ramandimbisoa, B., Ravololomanana, N., Stévart, T., Faranirina, L., Andriamahefarivo, L., Rabarimanarivo, M., Rajaovelona, L.R., Andriambololonera, S. & Droissart, V. 2025. Aeranthes ramosa. The IUCN Red List of Threatened Species 2025: e.T70102132A70117682. Accessed on 05 May 2026.