Costus osae
Maas & H.Maas
Pays · région · aire protégée · écorégion · biome
Graphe en cours d’indexation
Calcul du tissu écologique de Costus osae.
Le graphe apparaîtra automatiquement dès que le calcul est terminé (rafraîchissement toutes les 5s).
Liste rouge IUCN
VU · Vulnérablecritères D1↘Décroissante- Évaluation
- 2015 · v3.1
- Altitude
- 50 – 900 m
- Profondeur
- – m
État de la populationTexte officiel évaluation IUCNExpert
This assessor has observed subpopulations at two localities, Quebrada Aquabuena near Rincon and the Rio Bonito/Quebrada Negra areas of the Parque Nacional Piedras Blancas. At the first site, visited in 2013, there was a sizeable subpopulation, estimated to be at least 50 mature individuals which had blanketed a small area. In the other area, visited in 2005 and again in 2011, the plants were more isolated with only three to five plants seen together at a given site. In several trips to the Osa Peninsula, this assessor has not seen this species in the southern part of the Peninsula or in the western part near Drake or the San Pedrillo area of the Corcovado National Park, nor have collections been recorded in those parts of the Golfo Dulce region. Based on these observations and communication from Reinaldo Aquilar who lives in the area, this assessor estimates a total population size of 300-500 mature individuals that is decreasing to some extent, but not quantifiable.
Menaces identifiées(3 menaces classées CMP-IUCN)
11_1Habitat shifting & alterationUnknownUnknownOngoing2_1_2Small-holder farmingUnknownUnknownOngoing2_3_2Small-holder grazing, ranching or farmingUnknownUnknownOngoing
Description complète des menacesTexte détaillé évaluation IUCNExpert
There is some threat of habitat loss, especially in the unprotected part of its area of occupancy (AOO) between Rancho Quemado and Rincon, on the Osa Peninsula of Costa Rica. This species is more likely than others to be affected by disturbance and wild populations could be especially hard hit by the effects of global warming as it seems to be especially sensitive to habitat change (R. Aquilar pers. comm. 2015). The area around Rancho Quemado is likely to be experiencing a reduction in numbers due to habitat loss but other areas are currently protected.
Habitats préférentiels (classification IUCN)
1_6Forest - Subtropical/Tropical Moist Lowland★
Mesures de conservation recommandéesStratégies de conservation IUCNExpert
Some subpopulations occur within existing protected areas but are not actively managed. The subpopulations located in the protected areas of Corcovado National Park and Piedras Blancas National Park should be actively monitored. This species is found in the living collections of several large botanical gardens and is propagated and cultivated as a popular ornamental plant, but nearly all of these are clones from a single collection and there is no current conservation of the genetic diversity of the species. Seeds from different subpopulations should be deposited in genebanks to preserve the genetic diversity.
Actions de conservation (1)Conservation Actions Classification Scheme — IUCNExpert
3_4_2Genome resource bank
Usage & commerce (1)Use & Trade — IUCNExpert
13Pets/display animals, horticultureinternational
Niche IUCN globaleRealms · Systems · LMEs · Growth forms · FAOs — biogéographie IUCNExpert
Royaumes biogéographiques
Neotropical
Systèmes (terrestre/eau douce/marin)
Terrestrial
Formes de croissance
Geophyte
Références bibliographiques (2)Sources scientifiques de l'évaluation IUCNExpert
- IUCN. 2015. The IUCN Red List of Threatened Species. Version 2015-4. Available at: <a href="www.iucnredlist.org">www.iucnredlist.org</a>. (Accessed: 19 November 2015).
- Maas, P.J.M. and Maas-van de Kamer, H. 1997. Two new species of <i>Costus</i> (Costaceae) from Costa Rica. <i>Brittonia</i> 49(2): 274-279.
Évaluateurs & contributeurs (3)Personnes ayant contribué à l'évaluation IUCNExpert
assessor
Skinner, D.
contributor
Magos Brehm, J.
evaluator
Magos Brehm, J.
Skinner, D. 2015. Costus osae. The IUCN Red List of Threatened Species 2015: e.T56347828A56353118. Accessed on 05 May 2026.
Distribution mondiale
Calcul de la distribution GBIF· ~10–60 s
Phénologie
Calcul du calendrier d'apparition· ~5–30 s