Ontologia

Arisaema heterocephalum

Koidz.

ENLR Monde (IUCN)
  1. Plante
  2. Tracheophyta
  3. Liliopsida
  4. Alismatales
  5. Araceae
Pays · région · aire protégée · écorégion · biome

Graphe en cours d’indexation

Calcul du tissu écologique de Arisaema heterocephalum.

Le graphe apparaîtra automatiquement dès que le calcul est terminé (rafraîchissement toutes les 5s).

Liste rouge IUCN

EN · En dangercritères C2a(i); D↘Décroissante
Évaluation complète
Évaluation
2016 · v3.1
Altitude
– m
Profondeur
– m
État de la populationExpert
Total population is estimated to be less than 700 mature individuals (Ministry of the Environment 2015).

Menaces identifiées(4 menaces classées CMP-IUCN)

  • 5_2_1
    Intentional use (species is the target)
    Rapid DeclinesWhole (>90%)Ongoing
  • 7_2_10
    Large dams
    Rapid DeclinesMinority (<50%)Past, Unlikely to Return
  • 5_3_3
    Unintentional effects: (subsistence/small scale) [harvest]
    Slow, Significant DeclinesMajority (50-90%)Past, Likely to Return
  • 6_1
    Recreational activities
    Slow, Significant DeclinesMinority (<50%)Ongoing
Description complète des menacesExpert
Major current threats to this species are collection for cultivation and trampling by tourists (Kagoshima Prefecture 2003, Okinawa Prefectural Government 2006). Because the species does not form bulblets, growth rate is low and it is estimated that many of the individuals in the wild plant market are illegally collected.

Habitats préférentiels (classification IUCN)

  • 1_6Forest - Subtropical/Tropical Moist Lowland★
Mesures de conservation recommandéesExpert
Arisaema heterocephalum ssp. heterocephalum is listed on the 4th Red List of Japan, Vascular Plants (Ministry of the Environment 2012) as Endangered, while A. h. subsp. majus (treated here as a synonym of the nominate subspecies). and A. h. subsp. okinawaense are listed as Critically Endangered. The subspecies on Amami-Oshima and Tokunoshima Islands are designated as regional endangered wild fauna and flora by the ordinance of municipalities, and collection is prohibited. The habitat of A. h. subsp. okinawaense is designated as Prefectural Natural Monument and Prefectural Nature Conservation Area and development activities are restricted.
Actions de conservation (4)Expert
  • 1_1Site/area protection
  • 2_1Site/area management
  • 4_3Awareness & communications
  • 5_1_2National level
Stress écologiques (12)Expert
  • 1_1Ecosystem conversion
  • 1_1Ecosystem conversion
  • 1_1Ecosystem conversion
  • 1_2Ecosystem degradation
  • 1_2Ecosystem degradation
  • 1_2Ecosystem degradation
  • 2_1Species mortality
  • 2_1Species mortality
  • 2_1Species mortality
  • 2_2Species disturbance
  • 2_2Species disturbance
  • 2_2Species disturbance
Usage & commerce (1)Expert
  • 13Pets/display animals, horticulture
    nationalsubsistance
Priorités de recherche (3)Expert
  • 1_2Population size, distribution & trends
  • 2_1Species Action/Recovery Plan
  • 3_1Population trends
Niche IUCN globaleExpert

Royaumes biogéographiques

Indomalayan

Systèmes (terrestre/eau douce/marin)

Terrestrial

Formes de croissance

Forb or HerbGeophyte
Références bibliographiques (7)Expert
  1. IUCN. 2016. The IUCN Red List of Threatened Species. Version 2016-1. Available at: <a href="www.iucnredlist.org">www.iucnredlist.org</a>. (Accessed: 30 June 2016).
  2. Ministry of the Environment, Government of Japan. 2015. <i>Red Data Book 2014. Threatened Wildlife of Japan - Volume 8, Vascular Plants.</i> GYOSEI Corporation, Tokyo.
  3. Ministry of the Environment. 2012. 4th Red List of Japan, Vascular Plants. Available at: <a href="http://www.env.go.jp/press/file_view.php?serial=20557&hou_id=15619">http://www.env.go.jp/press/file_view.php?serial=20557&hou_id=15619</a>.
  4. Murata, J. 2011. <i></i>Arisaema<i> in Japan</i>. The Hokuryukan Co., LTD, Tokyo.
  5. Okinawa Prefectural Government. 2006. <i>Threatened Wildlife in Okinawa, 2nd Ed. (Fungi and Plants)</i>. Nature Conservation Division, Department of Cultural & Environmental Affairs, Okinawa Prefectural Government.
  6. Kagoshima Prefecture. 2003. <i>Kagoshima Red Data Book, Plants</i>. Kagoshima Environmental Research and Service, Kagoshima.
  7. Environment Agency of Japan. 2000. <i>The Threatened Wildlife of Japan, Red Data Book, 2nd ed. Vol. 8, Vascular Plants</i>. Japan Wildlife Research Center, Tokyo.
Évaluateurs & contributeurs (3)Expert
assessor
Ministry of the Environment, Japan
evaluator
Hilton-Taylor, C.
facilitators
Yoneda, K.

Ministry of the Environment, Japan 2016. Arisaema heterocephalum. The IUCN Red List of Threatened Species 2016: e.T54083150A54084055. Accessed on 05 May 2026.

Répartition mondiale (heatmap GBIF)Construction en cours

0 obs · 0 cellules
Construction par partitions temporelles GBIF0%

Source : GBIF — observations agrégées par hexagones 0.2° × 0.2° (~22km). Filtre qualité : précision coordonnée < 10 km. Coloration quantile (q50/70/90/99). Fond carte : OpenFreeMap · © OpenStreetMap.

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

iNaturalist

Bibliographie

BHLOpenAlex