Cryptocoryne auriculata
Engl.
Pays · région · aire protégée · écorégion · biome
Graphe en cours d’indexation
Calcul du tissu écologique de Cryptocoryne auriculata.
Le graphe apparaîtra automatiquement dès que le calcul est terminé (rafraîchissement toutes les 5s).
Liste rouge IUCN
VU · Vulnérablecritères B1ab(iii)+2ab(iii)↘Décroissante- Évaluation
- 2023 · v3.1
- Altitude
- 10 – 150 m
- Profondeur
- – m
État de la populationTexte officiel évaluation IUCNExpert
In areas where this species occurs, subpopulations tend to occur as separate patches, all of which are small and involve few plants. Extensive surveys of streams in the Lanjak Entimau Wildlife Sanctuary resulted in location of subpopulations in three streams, two of which supported only small, scattered subpopulations, with abundant plants in the third. It occurred as one or two scattered plants at one other site and single patches in the remainder. The population trend is inferred to be declining with an inferred continuing decline in the number of mature individuals.
Menaces identifiées(8 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%)Ongoing2_1_2Small-holder farmingVery Rapid DeclinesMajority (50-90%)Ongoing2_1_3Agro-industry farmingVery Rapid DeclinesMajority (50-90%)Ongoing2_3_2Small-holder grazing, ranching or farmingVery Rapid DeclinesMajority (50-90%)Ongoing2_3_3Agro-industry grazing, ranching or farmingVery Rapid DeclinesMajority (50-90%)Ongoing5_4_4Unintentional effects: (large scale) [harvest]Very Rapid DeclinesMajority (50-90%)Ongoing
Description complète des menacesTexte détaillé évaluation IUCNExpert
Most of the sites where this species occurs are not protected and are already suffering or threatened by the factors affecting all lowland river systems in Borneo: the primary and secondary effects of forest degradation and clearance, direct habitat destruction and pollution. It occurs in one strictly protected area, however, even here it is vulnerable to illegal 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 measures in place for this species. This species occurs in Lanjak Entimau Wildlife Sanctuary which is strictly protected and where the risk of habitat destruction should be limited. There is an urgent need to visit known populations to assess the current threat level to the species and habitat, as well as to assess potential for protection of more populations.
Actions de conservation (1)Conservation Actions Classification Scheme — IUCNExpert
1_2Resource & habitat protection
Stress écologiques (14)Stresses Classification — IUCNExpert
1_1Ecosystem conversion1_1Ecosystem conversion1_1Ecosystem conversion1_1Ecosystem conversion1_2Ecosystem degradation1_2Ecosystem degradation2_1Species mortality2_1Species mortality2_1Species mortality2_1Species mortality2_1Species mortality2_1Species mortality2_1Species mortality2_2Species disturbance
Usage & commerce (2)Use & Trade — IUCNExpert
13Pets/display animals, horticultureinternational16Establishing ex-situ production *international
Priorités de recherche (5)Research Needed Classification — IUCNExpert
1_2Population size, distribution & trends1_5Threats1_6Actions3_1Population trends3_4Habitat 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 (4)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).
- Ipor, I.B., Tawan, C.S. & K. Meekiong. 2010. Notes on occurrence of Cryptocoryne auriculata Engler in Lanjak Entimau Wildlife Sanctuary. In: Mohamed, A.M., I.B. Ipor, Meekiong K., Ampeng, A., Sapuan A. & A. Latiff (ed.), Proceeding on Seminar of Biodiversity of Eastern Lanjak Entimau Wildlife Sanctuary, pp. 111-114. Kuala Lumpur.
- Mohidin, J. 2004. Ecology of Cryptocoryne auriculata Engler in Pakan, Sibu, Sarawak. University Sains Malaysia.
- Jacobsen, N. 1985. The <i>Cryptocoryne</i> (Araceae) of Borneo. <i>Nordic Journal of Botany </i> 5: 31-50.
Évaluateurs & contributeurs (2)Personnes ayant contribué à l'évaluation IUCNExpert
assessor
Lansdown, R.V.
evaluator
Jacobsen, N. & Wongso, S.
Lansdown, R.V. 2023. Cryptocoryne auriculata. The IUCN Red List of Threatened Species 2023: e.T175651160A175651164. Accessed on 05 May 2026.
Distribution mondiale
Calcul de la distribution GBIF· ~10–60 s
Phénologie
Calcul du calendrier d'apparition· ~5–30 s