Cycas taiwaniana
Carruth.
1 photo · Licences CC (Wikimedia Commons / iNaturalist)Click pour agrandir
Pays · région · aire protégée · écorégion · biome
Graphe en cours d’indexation
Calcul du tissu écologique de Cycas taiwaniana.
Le graphe apparaîtra automatiquement dès que le calcul est terminé (rafraîchissement toutes les 5s).
Liste rouge IUCN
EN · En dangercritères A2cd+4cd↘Décroissante- Évaluation
- 2023 · v3.1
- Altitude
- – m
- Profondeur
- – m
État de la populationTexte officiel évaluation IUCNExpert
No accurate information on population numbers is available for Cycas taiwaniana. It is however regarded as extremely rare in the wild and is classified as a 'plant species with extremely small populations' in China (Xi et al. 2022). Xi et al. (2022) record 12 subpopulations with an ongoing decline in the size of the population.
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 been severely depleted by collection from the wild. Habitat destruction has also had a major effect on the population. Surviving subpopulations are fragmentary and in remote sites and although probably reasonably secure by virtue of inaccessibility, must still be regarded as under threat.
Habitats préférentiels (classification IUCN)
1_6Forest - Subtropical/Tropical Moist Lowland1_9Forest - Subtropical/Tropical Moist Montane2_1Savanna - Dry
Mesures de conservation recommandéesStratégies de conservation IUCNExpert
This species is listed in Appendix II of the CITES Appendices. Xi et al. (2022) list ten reserves where the species is thought to have originally occurred but only three where subpopulations are now known to occur: the Bawangling Mountain National Nature Reserve, Hainan; Diaoluoshan Mountain National Nature Reserve, Hainan; and Yinggeling Mountain National Nature Reserve, Hainan.
Actions de conservation (1)Conservation Actions Classification Scheme — IUCNExpert
1_1Site/area protection
Stress écologiques (4)Stresses Classification — IUCNExpert
1_1Ecosystem conversion1_2Ecosystem degradation2_1Species mortality2_3_8Other
Usage & commerce (1)Use & Trade — IUCNExpert
13Pets/display animals, horticultureinternationalnational
Priorités de recherche (1)Research Needed Classification — IUCNExpert
1_1Taxonomy
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 (9)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).
- Calonje, M., Stevenson, D. and Osborne, R. 2022. The World List of Cycads. Available at: <a href="https://cycadlist.org/index.php">https://cycadlist.org/index.php</a>. (Accessed: 2022).
- Xi, H., Wang, Y., Pan, Y., Xu, T., Zhan, Q., Liu, J., Feng, X. and Gong, X. 2022. Resources and protection of <i>Cycas</i> plants in China. <i>Biodiversity Science</i> 30: 21495.
- Wang, X-H., Wu, W. and Jian, S-G. 2019. Transcriptome analysis of two radiated <i>Cycas</i> species and the subsequent species delimitation of the <i>Cycas taiwaniana</i> complex. <i>Applications in Plant Sciences</i> 7(10): e11292.
- Zheng, Y., Liu, J., Feng, X. and Gong, X. 2017. The distribution, diversity, and conservation status of <i>Cycas</i> in China. <i>Ecology and Evolution</i> 7: 3212-3224.
- Hill, K.D. 2008. The genus <i>Cycas</i> (Cycadaceae) in China. <i>Telopea</i> 12(1): 71-118.
- Chen, J. and Stevenson, D.W. 2006. Flora of China. Available at: <a href="www.efloras.org">www.efloras.org</a>.
- Whitelock, L.M. 2002. <i>The Cycads</i>. Timber Press, Portland, Oregon.
- Wang, F., Liang H., Tanqing, C. and Dingyue, W. (eds ). 1996. <i>Cycads in China</i>. Guangdong Science and Technology Press, Guangdong, China.
Évaluateurs & contributeurs (3)Personnes ayant contribué à l'évaluation IUCNExpert
assessor
Bösenberg, J.D.
contributor
Lindstrom, A. & Hill, K.D.
evaluator
Donaldson, J.S.
Bösenberg, J.D. 2023. Cycas taiwaniana. The IUCN Red List of Threatened Species 2023: e.T238708222A69827031. 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
Note nomenclaturale & synonymesDétails taxonomiques + synonymes CoLExpert
Note nomenclaturale
TAXREF v18 — INPN/MNHNSynonymes (7)— redirigent vers cette page
- Cycas hainanensisC.J.Chen
- Cycas hainanensis subsp. hainanensis
- Cycas lingshuiensisG.A.Fu
- Cycas lingshuigensisG. A. Fu
- Cycas revoluta var. taiwaniana(Carruth.) J.Schust.
- Cycas shanyaensisG.A.Fu
- Cycas shanyagensisG. A. Fu
Sources : Catalogue of Life Cross-References (synonymes) · TAXREF v18 INPN/MNHN (commentaires FR).