Cryptocoryne yujii
Bastm.
Pays · région · aire protégée · écorégion · biome
Pas d'interactions documentées pour cette espèce.
Liste rouge IUCN
NT · Quasi menacéecritères B1ab(iii)+2ab(iii)?Inconnue- Évaluation
- 2023 · v3.1
- Altitude
- 0 – 185 m
- Profondeur
- – m
État de la populationTexte officiel évaluation IUCNExpert
There is no information available on the population size or trend of this species. The forest has been cleared in many sites where this species occurs and it is inferred that this will be causing a population decline. However, the species can persist in areas where primary forest has been replaced by secondary forest.
Menaces identifiées(6 menaces classées CMP-IUCN)
5_2_1Intentional use (species is the target)UnknownUnknownOngoing9_3_1Nutrient loadsSlow, Significant DeclinesMajority (50-90%)Ongoing9_3_2Soil erosion, sedimentationSlow, Significant DeclinesMajority (50-90%)Ongoing1_1Housing & urban areasVery Rapid DeclinesMajority (50-90%)Ongoing2_1_2Small-holder farmingVery Rapid DeclinesMajority (50-90%)Ongoing2_1_3Agro-industry farmingVery Rapid DeclinesMajority (50-90%)Ongoing
Description complète des menacesTexte détaillé évaluation IUCNExpert
The habitats and sites where this species occurs are threatened by factors which affect all plants occurring in flowing water bodies in the region, notably forest clearance, urbanisation, agricultural intensification and the secondary effects of these factors, particularly increased turbidity, pollution and casual habitat degradation. The species may be vulnerable to commercial collection.
Habitats préférentiels (classification IUCN)
5_1Wetlands (inland) - Permanent Rivers/Streams/Creeks (includes waterfalls)★
Mesures de conservation recommandéesStratégies de conservation IUCNExpert
There are no conservation actions in place specifically for this species and it is not known from any protected areas. There is an urgent need to survey all known subpopulations to derive an up-to-date assessment of the conservation status of known subpopulations.
Stress écologiques (11)Stresses Classification — IUCNExpert
1_1Ecosystem conversion1_1Ecosystem conversion1_1Ecosystem conversion1_2Ecosystem degradation1_2Ecosystem degradation2_1Species mortality2_1Species mortality2_1Species mortality2_1Species mortality2_1Species mortality2_1Species mortality
Usage & commerce (2)Use & Trade — IUCNExpert
13Pets/display animals, horticultureinternationalnational16Establishing ex-situ production *internationalnational
Priorités de recherche (5)Research Needed Classification — IUCNExpert
1_2Population size, distribution & trends1_5Threats1_6Actions3_1Population trends3_2Harvest level trends
Niche IUCN globaleRealms · Systems · LMEs · Growth forms · FAOs — biogéographie IUCNExpert
Royaumes biogéographiques
Indomalayan
Systèmes (terrestre/eau douce/marin)
Freshwater (=Inland waters)
Formes de croissance
Forb or HerbHydrophyte
Références bibliographiques (6)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).
- Bastmeijer, J.D. 2020. Crypts pages: <i>Cryptocoryne yujii</i>. Available at: <a href="https://crypts.home.xs4all.nl/Cryptocoryne/Gallery/yuj/yuj.html">https://crypts.home.xs4all.nl/Cryptocoryne/Gallery/yuj/yuj.html</a>
- Wongso, S., Bastmeijer, J.D., Budianto, H., Ipor, I.B., Rysbjerg Munk, K., Ørgaard, M. and Jacobsen, N. 2017. Six new <i>Cryptocoryne</i> taxa (Araceae) from Kalimantan, Borneo. <i>Willdenowia</i> 47: 325–339. https:// doi.org/10.3372/wi.47.47314
- Ipor, I.B., Tawan, C.S., Abai, J., Saupi, N. and Meekiong, K. 2009. Notes on occurrence and distribution of <i>Cryptocoryne</i> species in Sarawak, Malaysia. <i>Folia Malaysiana</i> 10(2): 115-138.
- Bastmeijer, J.D. 2002. <i>Cryptocoryne yujii</i> Bastmeijer (Araceae), eine neue Art aus Sarawak. <i>Aqua Planta</i> 27(4): 145-146.
- Wilstermann-Hildebrand, M. 2000-2021. Wasserkelche - Gattung <i>Cryptocoryne</i>. Available at: <a href="http://www.heimbiotop.de/cryptocoryne.html#cryptoyujii">http://www.heimbiotop.de/cryptocoryne.html#cryptoyujii</a>
Évaluateurs & contributeurs (2)Personnes ayant contribué à l'évaluation IUCNExpert
assessor
Lansdown, R.V.
evaluator
Jacobsen, N. & Bilz, M.
Lansdown, R.V. 2023. Cryptocoryne yujii. The IUCN Red List of Threatened Species 2023: e.T175658074A175658115. Accessed on 05 May 2026.
Répartition mondiale
Aucune observation géoréférencée avec précision suffisante (<10 km) dans GBIF pour cette espèce.