Martellidendron hornei
(Balf.f.) Callm. & Chassot
Pays · région · aire protégée · écorégion · biome
Graphe en cours d’indexation
Calcul du tissu écologique de Martellidendron hornei.
Le graphe apparaîtra automatiquement dès que le calcul est terminé (rafraîchissement toutes les 5s).
Liste rouge IUCN
VU · Vulnérablecritères A2c; D2→Stable- Évaluation
- 2011 · v3.1
- Altitude
- 0 – 600 m
- Profondeur
- – m
État de la populationTexte officiel évaluation IUCNExpert
It has been estimated that between 2,500 and 10,000 mature individuals of M. hornei exist in the wild (RDLP workshop 2006). The exact number of mature individuals was not determined. The largest group of the species consists of about 150 individuals.
In 1899, M. hornei was described to often occur in huge numbers in damp forests and was an essential feature of the Seychelles landscape (Diels 1922). Nowadays, it is mainly found in small groups, which are mostly confined to river ravines and on slopes where is good access to water (Carlström 1996, Dogley and Matatiken 2006). Based on this clear historical comparison it is obvious, that there has been a massive population reduction in the last 100 years (during the last three generations). It is not possible to quantify this reduction, but it can be suspected that it is at least 30% in the last 100 years. Wetland clearance for cultivation may have been the main reason for this reduction.
In 1899, M. hornei was described to often occur in huge numbers in damp forests and was an essential feature of the Seychelles landscape (Diels 1922). Nowadays, it is mainly found in small groups, which are mostly confined to river ravines and on slopes where is good access to water (Carlström 1996, Dogley and Matatiken 2006). Based on this clear historical comparison it is obvious, that there has been a massive population reduction in the last 100 years (during the last three generations). It is not possible to quantify this reduction, but it can be suspected that it is at least 30% in the last 100 years. Wetland clearance for cultivation may have been the main reason for this reduction.
Menaces identifiées(3 menaces classées CMP-IUCN)
2_1_3Agro-industry farmingPast, Unlikely to Return5_3_5Motivation Unknown/UnrecordedPast, Unlikely to Return8_2Problematic native species/diseasesOngoing
Description complète des menacesTexte détaillé évaluation IUCNExpert
The species preferred habitat type is heavily invaded by introduced species such as Paraserianthes falcataria and other invasive creepers. The species has a restricted range. Additionally the degree of isolation of the different groups may be of concern.
Habitats préférentiels (classification IUCN)
1_6Forest - Subtropical/Tropical Moist Lowland★5_1Wetlands (inland) - Permanent Rivers/Streams/Creeks (includes waterfalls)
Mesures de conservation recommandéesStratégies de conservation IUCNExpert
The species is present in the Morne Seychellois National Park, Praslin National Park and Curieuse Marine National Park. Large parts of the species habitat are legally protected by the “State Land and River Reserve act” (Laws of Seychelles 1991).
Actions de conservation (1)Conservation Actions Classification Scheme — IUCNExpert
5_1_2National level
Stress écologiques (4)Stresses Classification — IUCNExpert
1_1Ecosystem conversion1_2Ecosystem degradation1_2Ecosystem degradation1_2Ecosystem degradation
Priorités de recherche (2)Research Needed Classification — IUCNExpert
1_2Population size, distribution & trends1_5Threats
Niche IUCN globaleRealms · Systems · LMEs · Growth forms · FAOs — biogéographie IUCNExpert
Royaumes biogéographiques
Afrotropical
Systèmes (terrestre/eau douce/marin)
Terrestrial
Formes de croissance
Tree - size unknown
Références bibliographiques (8)Sources scientifiques de l'évaluation IUCNExpert
- IUCN. 2011. IUCN Red List of Threatened Species (ver. 2011.2). Available at: <a href="http://www.iucnredlist.org">http://www.iucnredlist.org</a>. (Accessed: 10 November 2011).
- Dogley, D. and Matatiken, D. 2006. <i>Guide to Endemic Palms and Screw Pines of the Seychelles Granitic Islands</i>. Plant Conservation Action Group, Victoria.
- National Statistics Bureau. 2005. Statistical Abstract 2004. Government of Seychelles, Mahé, Seychelles.
- Carlström, A. 1996. Areas of Special Conservation Value for the Plants of the Granitic Seychelles. Report to the Ministry of Foreign Affairs, Division of Environment, Victoria, Seychelles.
- Carlström, A. 1996. Endemic and Threatened Plant Species on the Granitic Seychelles. Report to the Ministry of Foreign Affairs, Division of Environment, Victoria, Seychelles.
- Laws of Seychelles. 1991. Breadfruit and other Trees (protection) Act 1917; Chapter 18, Revised Edition. SPACE The Government Printer, Victoria, Seychelles.
- Robertson, S.A. 1989. <i>Flowering plants of the Seychelles</i>. Royal Botanic Gardens, Kew, UK.
- Diels, L. 1922. <i>Beiträge zur Erkenntnis der Vegetation und der Flora der Seychellen. Wissenschaftliche Ergebnisse der Deutschen Tiefsee-Expedition auf dem Dampfer “Valdivia” 1898–1899, Zweiter Band, Erster Teil, Dritte Lieferung. IV</i>. Gustav Fischer Verlag, Jena, Germany.
Évaluateurs & contributeurs (2)Personnes ayant contribué à l'évaluation IUCNExpert
assessor
Ismail, S., Huber, M.J. & Mougal, J.
evaluator
Gibbs, D. & Lutz, M.L.
Ismail, S., Huber, M.J. & Mougal, J. 2011. Martellidendron hornei. The IUCN Red List of Threatened Species 2011: e.T30508A9555288. Accessed on 05 May 2026.
Distribution mondiale
Calcul de la distribution GBIF· ~10–60 s
Phénologie
Calcul du calendrier d'apparition· ~5–30 s
Consulter sur les bases externes
Note nomenclaturale & synonymesDétails taxonomiques + synonymes CoLExpert
Note nomenclaturale
TAXREF v18 — INPN/MNHNSynonymes (1)— redirigent vers cette page
- Pandanus horneiBalf.f.
Sources : Catalogue of Life Cross-References (synonymes) · TAXREF v18 INPN/MNHN (commentaires FR).