Cryptocoryne erwinii
Wongso & Ipor
Pays · région · aire protégée · écorégion · biome
Graphe en cours d’indexation
Calcul du tissu écologique de Cryptocoryne erwinii.
Le graphe apparaîtra automatiquement dès que le calcul est terminé (rafraîchissement toutes les 5s).
Liste rouge IUCN
CR · En danger critiquecritères B1ab(iii,v)+2ab(iii,v)↘Décroissante- Évaluation
- 2023 · v3.1
- Altitude
- 60 – 60 m
- Profondeur
- – m
État de la populationTexte officiel évaluation IUCNExpert
Since the species was discovered in 2015, the population has declined dramatically and is now estimated to number only 500 individuals.
Menaces identifiées(5 menaces classées CMP-IUCN)
2_3_2Small-holder grazing, ranching or farmingRapid DeclinesWhole (>90%)Ongoing5_2_1Intentional use (species is the target)UnknownWhole (>90%)Ongoing5_3_5Motivation Unknown/UnrecordedUnknownWhole (>90%)Ongoing9_3_1Nutrient loadsSlow, Significant DeclinesWhole (>90%)Ongoing9_3_2Soil erosion, sedimentationSlow, Significant DeclinesWhole (>90%)Ongoing
Description complète des menacesTexte détaillé évaluation IUCNExpert
Most of the natural habitat in the area in which this species was found is privately owned by indigenous people and involves a combination of Shorea forest and small scale agriculture. Remaining patches of semi-natural habitat in the area are extremely vulnerable to damage and degradation, the secondary effects of forest clearance such as increased turbidity and pollution, as well as intensification of land-use. There is also a risk to this species from over-collection.
Habitats préférentiels (classification IUCN)
1_8Forest - Subtropical/Tropical Swamp★5_1Wetlands (inland) - Permanent Rivers/Streams/Creeks (includes waterfalls)★
Mesures de conservation recommandéesStratégies de conservation IUCNExpert
There are no specific conservation measures in place for this species and it is not known from any protected areas. There is an urgent need for surveys to document the extent and conservation condition of the known population and to investigate other water courses within the area to try find other extant subpopulations.
Actions de conservation (4)Conservation Actions Classification Scheme — IUCNExpert
1_1Site/area protection1_2Resource & habitat protection3_1_1Harvest management3_1_2Trade management
Stress écologiques (11)Stresses Classification — IUCNExpert
1_1Ecosystem conversion1_1Ecosystem conversion1_2Ecosystem degradation1_2Ecosystem degradation1_2Ecosystem degradation1_2Ecosystem degradation2_1Species mortality2_1Species mortality2_1Species mortality2_1Species mortality2_1Species mortality
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 (2)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).
- 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
Évaluateurs & contributeurs (2)Personnes ayant contribué à l'évaluation IUCNExpert
assessor
Lansdown, R.V.
evaluator
Jacobsen, N. & Wongso, S.
Lansdown, R.V. 2023. Cryptocoryne erwinii. The IUCN Red List of Threatened Species 2023: e.T175652391A175652887. Accessed on 05 May 2026.
Distribution mondiale
Calcul de la distribution GBIF· ~10–60 s
Phénologie
Calcul du calendrier d'apparition· ~5–30 s