Cycas macrocarpa
Griff.
Pays · région · aire protégée · écorégion · biome
Graphe en cours d’indexation
Calcul du tissu écologique de Cycas macrocarpa.
Le graphe apparaîtra automatiquement dès que le calcul est terminé (rafraîchissement toutes les 5s).
Liste rouge IUCN
VU · Vulnérablecritères A2cd+4cd↘Décroissante- Évaluation
- 2023 · v3.1
- Altitude
- 200 – 600 m
- Profondeur
- – m
État de la populationTexte officiel évaluation IUCNExpert
This is a widely scattered species, not forming dense stands. Fairly large sub-populations occur within the limestone Vang Vieng massif in Laos. The overall population size has not been determined. The population is assessed as declining due to extensive clearing of habitat for agriculture with past decline exceeding 30% over the past 50 years (one generation is c. 30 years) and ongoing decline estimated to be between 30 and 50%, when including the next two generations.
Menaces identifiées(2 menaces classées CMP-IUCN)
2_1_2Small-holder farmingOngoing5_2_1Intentional use (species is the target)Ongoing
Description complète des menacesTexte détaillé évaluation IUCNExpert
This species has suffered extensive habitat destruction due to agriculture, which is still ongoing. As with some species within this genus, it is also susceptible to over collecting for ornamental purposes.
Habitats préférentiels (classification IUCN)
1_6Forest - Subtropical/Tropical Moist Lowland6Rocky areas (eg. inland cliffs, mountain peaks)
Mesures de conservation recommandéesStratégies de conservation IUCNExpert
This species is listed in Appendix II of the CITES Appendices. It is still fairly common, and many subpopulations are within protected areas. An education and awareness programme as well as the long-term monitoring of subpopulations will support the conservation of this species.
Actions de conservation (2)Conservation Actions Classification Scheme — IUCNExpert
1_2Resource & habitat protection4_3Awareness & communications
Stress écologiques (3)Stresses Classification — IUCNExpert
1_1Ecosystem conversion1_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 & trends3_1Population trends
Niche IUCN globaleRealms · Systems · LMEs · Growth forms · FAOs — biogéographie IUCNExpert
Royaumes biogéographiques
Indomalayan
Systèmes (terrestre/eau douce/marin)
Terrestrial
Formes de croissance
CycadTree - large
Références bibliographiques (8)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).
- Averyanov, L.V., Nguyen, T.H., Sinh, K.N., Pham, T.V., Lamxay, V., Bounphanmy, S., Lorphengsy, S., Phan, L.K., Lanorsavanh, S. and Chantthavongsa, K. 2014. Gymnosperms of Laos. <i>Nordic Journal of Botany</i> 32(6): 765-805. doi: 10.1111/njb.00498.
- Palm and Cycad Societies of Australia. 2013. The Rediscovery of <i>Cycas macrocarpa</i>. Available at: <a href="http://www.pacsoa.org.au/wiki/Cycas_macrocarpa#The_Rediscovery_of_Cycas_macrocarpa">http://www.pacsoa.org.au/wiki/Cycas_macrocarpa#The_Rediscovery_of_Cycas_macrocarpa</a>.
- Bonta, M. and Osborne, R. 2007. Cycads in the vernacular: A compendium of local names. Proceedings of the 7th International Conference on Cycad Biology, Xalapa, Mexico, January 2005. Memoirs of the New York Botanical Garden 97: 143-175.
- Lindström, A.J. and Hill, K.D. 2002. New species and a new record of <i>Cycas</i> (Cycadaceae) from Thailand. <i>Brittonia</i> 54(4): 298-304.
- Whitelock, L.M. 2002. <i>The Cycads</i>. Timber Press, Portland, Oregon.
- Hill, K.D. and Yang, S.-L. 1999. The genus <i>Cycas</i> (Cycadaceae) in Thailand. <i>Brittonia</i> 51(1): 48-73.
- Hill, K.D. and Stevenson, D.W. 1998 - 2006. The Cycad Pages. Available at: <a href="http://plantnet.rbgsyd.nsw.gov.au/PlantNet/cycad/index.html">http://plantnet.rbgsyd.nsw.gov.au/PlantNet/cycad/index.html</a>.
Évaluateurs & contributeurs (3)Personnes ayant contribué à l'évaluation IUCNExpert
assessor
Bösenberg, J.D.
contributor
Hill, K.D. & Lindstrom, A.
evaluator
Donaldson, J.S.
Bösenberg, J.D. 2023. Cycas macrocarpa. The IUCN Red List of Threatened Species 2023: e.T42057A68904566. 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