Navia scopulorum
L.B.Sm.
Pays · région · aire protégée · écorégion · biome
Graphe en cours d’indexation
Calcul du tissu écologique de Navia scopulorum.
Le graphe apparaîtra automatiquement dès que le calcul est terminé (rafraîchissement toutes les 5s).
Liste rouge IUCN
DD · Données insuffisantes?Inconnue- Évaluation
- 2013 · v3.1
- Altitude
- 1100 – 1700 m
- Profondeur
- – m
État de la populationTexte officiel évaluation IUCNExpert
The species has been reported to form dense clumps in rock crevices and on cliffs on the Toron Tepui, at ca 1,700 m asl. However there are no precise data about the size and dynamics of the population at present (Smith and downs 1974, Berry et al. 1997).
Menaces identifiées(5 menaces classées CMP-IUCN)
12_1Other threatUnknownUnknownOngoing5_2_1Intentional use (species is the target)UnknownUnknownOngoing1_3Tourism & recreation areasOngoing6_1Recreational activitiesOngoing7_1_3Trend Unknown/UnrecordedOngoing
Description complète des menacesTexte détaillé évaluation IUCNExpert
Due to the inaccessibility of both the steep slopes and high summits of the Tepui Mountains, much of the natural habitat is intact. However, there have been many anthropogenic changes and human impact has recently increased in the region. Human-induced fires at the base of the mountains have destroyed vegetation in extensive areas. Fires can reach the forest and rock outcrops on the slopes or even the summits and after fires, heavy rains may remove the soil substratum on soil islands on rocks and in crevices and ledges, preventing recolonization of the native flora. Many Bromeliaceae appear to be sensitive to fires (Benzing 2000, Versieux and Wendt 2007). Canaima, the largest National Park in Venezuela and where the taxon was collected is affected by rapidly growing mass tourism, which is favoured by road construction, illegal airstrips and helicopter flights into previously inaccessible areas. At present it is not known whether these processes are affecting the species' status and health, but it should be considered that small populations with low genetic variability are much more sensitive to natural fluctuations and stochastic events and much more prone to extinction (Cavallari et al. 2006).
Habitats préférentiels (classification IUCN)
1_9Forest - Subtropical/Tropical Moist Montane3_7Shrubland - Subtropical/Tropical High Altitude6Rocky areas (eg. inland cliffs, mountain peaks)
Mesures de conservation recommandéesStratégies de conservation IUCNExpert
There are no known conservation measures specifically for this species, but the species was collected within the Canaima National Park, which is the largest National Park in Venezuela. All Tepuis above 800 m are now designated protected conservation areas as natural monuments. Botanical surveys should be carried out to determine the current species' range, the size and trends of the populations. Samples of seed should be collected and stored as an ex situ conservation measure.
Actions de conservation (5)Conservation Actions Classification Scheme — IUCNExpert
2_1Site/area management3_4_1Captive breeding/artificial propagation3_4_2Genome resource bank4_3Awareness & communications5_2Policies and regulations
Stress écologiques (9)Stresses Classification — IUCNExpert
1_1Ecosystem conversion1_2Ecosystem degradation1_2Ecosystem degradation2_1Species mortality2_2Species disturbance2_2Species disturbance2_3_5Inbreeding2_3_7Reduced reproductive success2_3_8Other
Priorités de recherche (4)Research Needed Classification — IUCNExpert
1_2Population size, distribution & trends1_3Life history & ecology1_5Threats3_1Population trends
Niche IUCN globaleRealms · Systems · LMEs · Growth forms · FAOs — biogéographie IUCNExpert
Royaumes biogéographiques
Neotropical
Systèmes (terrestre/eau douce/marin)
Terrestrial
Formes de croissance
Forb or HerbLithophyte
Références bibliographiques (9)Sources scientifiques de l'évaluation IUCNExpert
- IUCN. 2013. IUCN Red List of Threatened Species (ver. 2013.1). Available at: <a href="http://www.iucnredlist.org">http://www.iucnredlist.org</a>. (Accessed: 12 June 2013).
- Funk, V., Hollowell, T., Berry, P., Kelloff, C. and Alexander, S.N. 2007. <i>Checklist of the Plants of the Guiana Shield (Venezuela: Amazonas, Bolivar, Delta Amacuro; Guyana, Surinam, French Guiana)</i>. Department of Botany, National Museum of Natural History, Washington, D.C.
- Cavallari, M.M., Forzza, R.C., Veasey, E.A., Zucchi, M.I. and Oliveira, G.C. 2006. Genetic variation in three Endangered species of <i>Encholirium</i> (Bromeliaceae) from Cadeia do Espinhaço, Brazil, selected using RAPD markers. <i>Biodiversity and Conservation</i> 15(14): 4357-4373.
- Rull, V. 2004. An evaluation of the lost world and vertical displacement hypotheses in the Chimanta Massif, Venezuelan Guyana. <i>Global Ecology and Biogeography</i> 13: 141-148.
- Oliva-Esteva, F. 2002. <i>Bromeliaceae III</i>. Oliva-Esteve Editions, Caracas.
- Huber, O. 2000. Pantepui region of Venezuela. Smithonian Institute.
- Steyermark, J.A., Berry, P.E., Holst, B.K. and Yatskievych, K. (eds). 1997. <i>Flora of the Venezuelan Guayana. Volume 3. ARALIACEAE-CACTACEAE</i>.In: J.A. Steyermark, P.E. Berry, K. Yatskievych and B.K. Holst (eds), pp. 774. Missouri Botanical Garden Press, St Louis.
- Holst, B.K. 1994. Checklist of Venezuelan Bromeliaceae with notes on species distribution by state and levels of endemism. <i>Selbyana</i> 15: 132-149.
- Smith, L.B. and Downs, R.J. 1974. <i>Flora Neotropica, Pitcairnoideae (Bromeliaceae)</i>. Hafner Press, New York.
Évaluateurs & contributeurs (2)Personnes ayant contribué à l'évaluation IUCNExpert
assessor
Romand-Monnier, F. & Contu, S.
evaluator
Scott, J.A.
Romand-Monnier, F. & Contu, S. 2013. Navia scopulorum. The IUCN Red List of Threatened Species 2013: e.T44392112A44498990. Accessed on 05 May 2026.
Distribution mondiale
Calcul de la distribution GBIF· ~10–60 s
Phénologie
Calcul du calendrier d'apparition· ~5–30 s