Dioon angustifolium

Miq.

Plante

VULR Monde (IUCN)

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

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Calcul du tissu écologique de Dioon angustifolium.

Le graphe apparaîtra automatiquement dès que le calcul est terminé (rafraîchissement toutes les 5s).

Liste rouge IUCN

VU · Vulnérablecritères A2cd+4cd↘Décroissante

Évaluation complète

Évaluation: 2022 · v3.1
Altitude: 200 – 1500 m
Profondeur: – m

État de la populationTexte officiel évaluation IUCNExpert

Most of the plants are concentrated in two subpopulations with in excess of 10,000 mature individuals in each.

Menaces identifiées(2 menaces classées CMP-IUCN)

2_1_2
Small-holder farming
Slow, Significant DeclinesMajority (50-90%)Ongoing
5_2_1
Intentional use (species is the target)
Slow, Significant DeclinesMinority (<50%)Ongoing

Description complète des menacesTexte détaillé évaluation IUCNExpert

This species is vulnerable to extinction due to the change of land use and habitat destruction as a result of farming practices. The removal of plants for the horticultural trade is an additional threat.

Habitats préférentiels (classification IUCN)

1_5Forest - Subtropical/Tropical Dry
3_5Shrubland - Subtropical/Tropical Dry
6Rocky areas (eg. inland cliffs, mountain peaks)

Mesures de conservation recommandéesStratégies de conservation IUCNExpert

This species is listed in Appendix II of CITES. This species is not known to occur in a protected area. Identification of suitable sites for conservation and monitoring of populations is needed. An education and awareness programme will also support the conservation of this species.

Actions de conservation (2)Conservation Actions Classification Scheme — IUCNExpert

1_1Site/area protection
4_3Awareness & communications

Stress écologiques (3)Stresses Classification — IUCNExpert

1_1Ecosystem conversion
1_2Ecosystem degradation
2_1Species mortality

Usage & commerce (1)Use & Trade — IUCNExpert

13Pets/display animals, horticulture
internationalnationalsubsistance

Priorités de recherche (5)Research Needed Classification — IUCNExpert

1_2Population size, distribution & trends
1_3Life history & ecology
1_4Harvest, use & livelihoods
1_5Threats
1_6Actions

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

Royaumes biogéographiques

NearcticNeotropical

Systèmes (terrestre/eau douce/marin)

Terrestrial

Formes de croissance

CycadTree - large

Références bibliographiques (5)Sources scientifiques de l'évaluation IUCNExpert

IUCN. 2023. The IUCN Red List of Threatened Species. Version 2023-1. Available at: <a href="www.iucnredlist.org">www.iucnredlist.org</a>. (Accessed: 07 December 2023).
IUCN. 2022. The IUCN Red List of Threatened Species. Version 2022-1. Available at: <a href="www.iucnredlist.org">www.iucnredlist.org</a>. (Accessed: 21 July 2022).
Gonzales Astorga, J., Vovides, A.P., Cruz-Angon, A., Octavio-Aguilar, P. and Iglesias, C. 2005. Allozyme Variation in the Three Extant Populations of the Narrowly Endemic Cycad Dioon angustifolium Miq. (Zamiaceae) from North-eastern Mexico. Annals of Botany 95: 999-1007.
Jones, D.L. 2002. Cycads of the World. Smithsonian Institution Press, Washington, DC.
De Luca, P., Sabato, S. and Vazquez Torres, M. 1982. Distribution and variation of Dion edule (Zamiaceae). Brittonia 34(3): 355-362.

Évaluateurs & contributeurs (3)Personnes ayant contribué à l'évaluation IUCNExpert

assessor

Chemnick, J. & Gregory, T.

contributor

Morales, S.

evaluator

Bösenberg, J.D.

⚠ 1 erratum publié après l'évaluation.

Chemnick, J. & Gregory, T. 2022. Dioon angustifolium (errata version published in 2023). The IUCN Red List of Threatened Species 2022: e.T178868A243384900. Accessed on 05 May 2026.