Dioon spinulosum
Dyer ex Eichler
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Pays · région · aire protégée · écorégion · biome
Graphe en cours d’indexation
Calcul du tissu écologique de Dioon spinulosum.
Le graphe apparaîtra automatiquement dès que le calcul est terminé (rafraîchissement toutes les 5s).
Liste rouge IUCN
EN · En dangercritères A2acd+4acd; B1ab(iii,v)↘Décroissante- Évaluation
- 2022 · v3.1
- Altitude
- 30 – 300 m
- Profondeur
- – m
État de la populationTexte officiel évaluation IUCNExpert
This species occurs in at least three locations and it is estimated that there are about 5,000 plants in the wild. Other estimates suggest that there are 25,000 plants in the wild. (Haynes 2012).
Menaces identifiées(5 menaces classées CMP-IUCN)
2_3_2Small-holder grazing, ranching or farmingRapid DeclinesMajority (50-90%)Ongoing5_2_1Intentional use (species is the target)Rapid DeclinesMajority (50-90%)Ongoing2_1_2Small-holder farmingOngoing2_3_3Agro-industry grazing, ranching or farmingOngoing7_2_11Dams (size unknown)Ongoing
Description complète des menacesTexte détaillé évaluation IUCNExpert
This species is affected by severe habitat destruction as a result of farming, ranching, limestone extraction and creation of reservoirs. There has also been severe over-collection in the past.
Habitats préférentiels (classification IUCN)
1_6Forest - Subtropical/Tropical Moist Lowland
Mesures de conservation recommandéesStratégies de conservation IUCNExpert
This species is listed in Appendix II of CITES. Plants are protected by local communities. An education and awareness programme as well as the long-term monitoring of the population will support the conservation of this species.
Actions de conservation (1)Conservation Actions Classification Scheme — IUCNExpert
4_3Awareness & communications
Stress écologiques (9)Stresses Classification — IUCNExpert
1_1Ecosystem conversion1_1Ecosystem conversion1_1Ecosystem conversion1_1Ecosystem conversion1_2Ecosystem degradation1_2Ecosystem degradation1_2Ecosystem degradation1_2Ecosystem degradation2_1Species mortality
Usage & commerce (1)Use & Trade — IUCNExpert
13Pets/display animals, horticultureinternationalnational
Priorités de recherche (2)Research Needed Classification — IUCNExpert
1_2Population size, distribution & trends1_6Actions
Niche IUCN globaleRealms · Systems · LMEs · Growth forms · FAOs — biogéographie IUCNExpert
Royaumes biogéographiques
Neotropical
Systèmes (terrestre/eau douce/marin)
Terrestrial
Formes de croissance
CycadTree - large
Références bibliographiques (7)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).
- Chemnick, J. 2012. <i>Dioon spinulosum</i> in habitat. <i>The Cycad Newsletter</i> 35(1): 9-10.
- Haynes, J. 2012. Taxonomy, morphology, biogeography, evolution, life history, conservation status, ethnobotany, & vernacular names of <i>Dioon spinulosum</i> Dyer ex Eichler. <i>The Cycad Newsletter</i> 35(1): 5-7.
- Whitelock, L.M. 2002. <i>The Cycads</i>. Timber Press, Portland, Oregon.
- Hill, K.D. and Stevenson, D.W. 1998-2006. The Cycad Pages. Available at: <a href="http://plantnet.rbgsyd.gov.au/PlantNet/cycad/">http://plantnet.rbgsyd.gov.au/PlantNet/cycad/</a>.
- Tang, W. 1997. Focus on <i>Dioon spinulosum</i>. <i>Encephalartos</i> 50: 4-11.
Évaluateurs & contributeurs (3)Personnes ayant contribué à l'évaluation IUCNExpert
assessor
Vovides, A.P., Chemnick, J. & Gregory, T.
contributor
Donaldson, J.S. & Morales, S.
evaluator
Bösenberg, J.D.
⚠ 1 erratum publié après l'évaluation.
Vovides, A.P., Chemnick, J. & Gregory, T. 2022. Dioon spinulosum (errata version published in 2023). The IUCN Red List of Threatened Species 2022: e.T42149A243387612. 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
Observations & statuts
Cartographie