Cycas riuminiana
Porte ex Regel
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Pays · région · aire protégée · écorégion · biome
Graphe en cours d’indexation
Calcul du tissu écologique de Cycas riuminiana.
Le graphe apparaîtra automatiquement dès que le calcul est terminé (rafraîchissement toutes les 5s).
Liste rouge IUCN
EN · En dangercritères A4acd↘Décroissante- Évaluation
- 2023 · v3.1
- Altitude
- 615 – 800 m
- Profondeur
- – m
État de la populationTexte officiel évaluation IUCNExpert
This species is found in five separate localities. The largest subpopulation is found on Mount Arayat, with smaller subpopulations in the other known localities. Based on molecular evidence, there is insignificant genetic diversity among the individuals in Pampanga, Bataan, and Batangas, thus suggesting that despite the geographical separation, these individuals belong to only one subpopulation. The population is estimated to number between 1,000 and 1,500 mature individuals; while ongoing threats are estimated to be causing an ongoing decline of 50% over three generations.
Menaces identifiées(6 menaces classées CMP-IUCN)
1_1Housing & urban areasOngoing1_3Tourism & recreation areasOngoing2_1_1Shifting agricultureOngoing4_2Utility & service linesOngoing5_2_1Intentional use (species is the target)Ongoing6_1Recreational activitiesOngoing
Description complète des menacesTexte détaillé évaluation IUCNExpert
The type locality of Cycas riuminiana is highly threatened by the development of an exclusive residential resort area. A telecommunications tower was also built at the peak of the mountain. Expansion of agricultural lands is also a threat. In the horticultural trade, the species is popular because of its slender trunk. Most of the mature plants on Mount Arayat have been removed.
Habitats préférentiels (classification IUCN)
1_6Forest - Subtropical/Tropical Moist Lowland6Rocky areas (eg. inland cliffs, mountain peaks)
Mesures de conservation recommandéesStratégies de conservation IUCNExpert
This species is listed in Appendix II of the CITES Appendices. The largest subpopulation is found within the Mount Arayat National Park. Recently, the various stakeholders developed a conservation and management plan for the species. It is also found in another protected area, Sierra Madre Wilderness Area. The other known localities are not protected.
Actions de conservation (11)Conservation Actions Classification Scheme — IUCNExpert
1_1Site/area protection1_2Resource & habitat protection2_1Site/area management3_1_1Harvest management3_1_2Trade management3_2Species recovery3_4_2Genome resource bank4_2Training4_3Awareness & communications5_4_2National level6_1Linked enterprises & livelihood alternatives
Stress écologiques (9)Stresses Classification — IUCNExpert
1_1Ecosystem conversion1_1Ecosystem conversion1_1Ecosystem conversion1_2Ecosystem degradation1_2Ecosystem degradation1_2Ecosystem degradation1_2Ecosystem degradation2_1Species mortality2_2Species disturbance
Usage & commerce (2)Use & Trade — IUCNExpert
13Pets/display animals, horticultureinternationalnationalsubsistance17Other (free text)subsistance
Priorités de recherche (6)Research Needed Classification — IUCNExpert
1_2Population size, distribution & trends1_3Life history & ecology1_4Harvest, use & livelihoods1_5Threats1_6Actions3_1Population trends
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 (8)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).
- Madulid, D.A. and Agoo, E.M.G. 2009. Taxonomy and conservation of Philippine cycads. <i>Blumea</i> 54: 99-102.
- Hill, K.D. and Stanberg, L.C. 2009. Notes on <i>Cycas truncata</i> de Laub. and related matters. <i>Telopea</i> 12(3): 447-450.
- Lindström, A.J., Hill, K.D. and Stanberg, L.C. 2008. The genus <i>Cycas</i> (Cycadaceae) in The Philippines. <i>Telopea</i> 12(1): 119-145.
- Donaldson, J.S. (ed.). 2003. <i>Cycads. Status Survey and Conservation Action Plan</i>. IUCN/SSC Cycad Specialist Group. IUCN, Gland, Switzerland and Cambridge, UK.
- Jones, D.L. 2002. <i>Cycads of the World (2nd edition)</i>. Smithsonian Institute Press, Washington, DC.
- Whitelock, L.M. 2002. <i>The Cycads</i>. Timber Press, Portland, Oregon.
- Hill, K.D. and Stevenson, D.W. 1998-2006. The Cycad Pages. Available at: <a href="http://plantnet.rbgsyd.gov.au/PlantNet/cycad/">http://plantnet.rbgsyd.gov.au/PlantNet/cycad/</a>.
Évaluateurs & contributeurs (3)Personnes ayant contribué à l'évaluation IUCNExpert
assessor
Bösenberg, J.D.
contributor
Agoo, E.M.G., Madulid, D.A., Linis, V.C. & Sambale, E.
evaluator
Donaldson, J.S.
Bösenberg, J.D. 2023. Cycas riuminiana. The IUCN Red List of Threatened Species 2023: e.T239047689A69155789. 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 (8)— redirigent vers cette page
- Cycas chamberlainiiW.H.Br. & Kienholz
- Cycas circinalis f. apertorumJ.Schust.
- Cycas circinalis f. chamberlainii(W.H.Br. & Kienholz) J.Schust.
- Cycas circinalis subsp. riuminiana(Porte ex Regel) J.Schust.
- Cycas circinalis subsp. riuminianaL.
- Cycas circinalis var. curraniiJ.Schust.
- Cycas circinalis var. riuminiana(Porte ex Regel) J.Schust.
- Cycas truncatade Laub.
Sources : Catalogue of Life Cross-References (synonymes) · TAXREF v18 INPN/MNHN (commentaires FR).