Caldesia grandis
Sam.
Pays · région · aire protégée · écorégion · biome
Pas d'interactions documentées pour cette espèce.
Liste rouge IUCN
LC · Préoccupation mineure↘Décroissante- Évaluation
- 2011 · v3.1
- Altitude
- – m
- Profondeur
- – m
État de la populationTexte officiel évaluation IUCNExpert
This species is confined to mountainous bogs and marshes in China and the eastern Himalayas. In China it occurs as small subpopulations in restricted habitats. There is no information on population trends in other countries of its range. However, since several studies reveal a clear negative trend in China, it is estimated that the global population may be also declining. The subpopulation in Taiwan has less than 50 individuals (Gituru et al. 2002).
Menaces identifiées(3 menaces classées CMP-IUCN)
7_3Other ecosystem modificationsRapid DeclinesMajority (50-90%)Ongoing6_1Recreational activitiesSlow, Significant DeclinesMajority (50-90%)Ongoing6_3Work & other activitiesSlow, Significant DeclinesMajority (50-90%)Ongoing
Description complète des menacesTexte détaillé évaluation IUCNExpert
The diminished populations of this species could be attributed to several factors including habitat degradation due to human activities, low seed set, little seed bank contribution to population growth and maintenance, a restricted habitat and poor competitive abilities.
Habitats préférentiels (classification IUCN)
5_4Wetlands (inland) - Bogs, Marshes, Swamps, Fens, Peatlands★5_7Wetlands (inland) - Permanent Freshwater Marshes/Pools (under 8ha)★
Mesures de conservation recommandéesStratégies de conservation IUCNExpert
It has been described as a vulnerable aquatic species in China (Yu et al. 1998). Its status in India is unknown. More research is needed to determine global population trends, habitat quality and threats to this species.
Stress écologiques (3)Stresses Classification — IUCNExpert
1_2Ecosystem degradation1_2Ecosystem degradation1_2Ecosystem degradation
Usage & commerce (2)Use & Trade — IUCNExpert
13Pets/display animals, horticulturesubsistance16Establishing ex-situ production *
Priorités de recherche (5)Research Needed Classification — IUCNExpert
1_2Population size, distribution & trends1_5Threats2_1Species Action/Recovery Plan3_1Population trends3_4Habitat trends
Niche IUCN globaleRealms · Systems · LMEs · Growth forms · FAOs — biogéographie IUCNExpert
Royaumes biogéographiques
Indomalayan
Systèmes (terrestre/eau douce/marin)
TerrestrialFreshwater (=Inland waters)
Formes de croissance
Hydrophyte
Références bibliographiques (9)Sources scientifiques de l'évaluation IUCNExpert
- IUCN. 2011. IUCN Red List of Threatened Species (ver. 2011.1). Available at: <a href="http://www.iucnredlist.org">http://www.iucnredlist.org</a>. (Accessed: 30 June 2017).
- WCSPF. 2010. World Checklist of Selected Plant Families. Available at: <a href="http://www.kew.org/wcsp/">http://www.kew.org/wcsp/</a>.
- International Plants Name Index. 2009. The International Plants Name Index. Available at: <a href="http://www.ipni.org/index.html">http://www.ipni.org/index.html</a>. (Accessed: 20 January).
- Zheng, X.W., Pan, H.Y., Wang, Y.G. and Chen, J.K. 2007. Chemical analysis of diterpenoids in <i>Caldesia grandis</i> and its chemotaxonomic implication. <i>Acta Phytotaxonomica Sinica</i> 45(4): 570-575.
- Chen, J.M., Gituru, W.R. and Wang, Q.F. 2007. Quantitative Estimates of Outcrossing Rates in a Natural Population of <i>Caldesia grandis</i> (Alismataceae). <i>Wuhan University Journal of Natural Sciences</i> 12(2): 337-342.
- Chen, J.M. and Wang, Q.F. 2005. Genetic diversity and structure in a natural <i>Caldesia grandis</i> population. <i>Biodiversity Science</i> 13(5): 398-406.
- Gituru, W.R., Wang, Q.F., Wang, Y. and Guo, Y.H. 2002. Pollination ecology, breeding system, and conservation of <i>Caldesia grandis</i> (Alismataceae), an endangered marsh plant in China. <i>Botanical Bulletin of Academia Sinica</i> 43: 231-240.
- Yu, D., Chomg, Y., Tu, M., Wamg, X. and Zhou, X. 1998. Study on the threatened aquatic higher plant species of China. <i>Chinese Biodiversity</i> 6(1): 13-21.
- Lin, Q. and Liu, K.M. 1997. Notes relating to flora of Hunan. II. Caryphyllaceae, Fagaceae, Umbelliferae, Rubiaceae, Compositae, Alismataceae. <i>Bulletin of Botanical Research</i> 17: 47-50.
Évaluateurs & contributeurs (2)Personnes ayant contribué à l'évaluation IUCNExpert
assessor
Zhuang, X.
evaluator
Juffe Bignoli, D., Bounphanmy, S., Meng, M., Homsombath, K. & Nophasead, L.
Zhuang, X. 2011. Caldesia grandis. The IUCN Red List of Threatened Species 2011: e.T168703A6527763. Accessed on 05 May 2026.
Répartition mondiale
Aucune observation géoréférencée avec précision suffisante (<10 km) dans GBIF pour cette espèce.