Ontologia

Beaucarnea purpusii

Rose

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

Graphe en cours d’indexation

Calcul du tissu écologique de Beaucarnea purpusii.

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

Liste rouge IUCN

EN · En dangercritères B1ab(i,ii,iii,v)+2ab(i,ii,iii,v)↘Décroissante
Évaluation complète
Évaluation
2020 · v3.1
Altitude
1700 – 2300 m
Profondeur
– m
État de la populationExpert
The current population trend is considered to be declining due to illegal looting and habitat threats. The population size has been reduced by at least 30% in the last three generations. Furthermore, a 20% reduction in mature individuals may occur in the next 100 years. Hernández-Sandoval and collaborators reported that local people cut the inflorescence and use it as a Christmas tree. This activity is drastically affecting the crossed pollination, seed production and population renewal in the wild populations. Additionally, it is really hard to find seedlings and young plants of B. purpusii. In fact, seed germination percentage is 38%, one of the lowest rate in the whole genus and the lowest rate of growth (Hernández et al. 2009). The authors found about 50 individual/ha between 1988 and 2008 and observed only one new young individual in this period.

Menaces identifiées(5 menaces classées CMP-IUCN)

  • 1_1
    Housing & urban areas
    Very Rapid DeclinesUnknownOngoing
  • 2_1_3
    Agro-industry farming
    Very Rapid DeclinesMajority (50-90%)Ongoing
  • 2_3_3
    Agro-industry grazing, ranching or farming
    Very Rapid DeclinesMajority (50-90%)Ongoing
  • 5_2_1
    Intentional use (species is the target)
    Very Rapid DeclinesUnknownOngoing
  • 7_1_1
    Increase in fire frequency/intensity
    Very Rapid DeclinesUnknownOngoing
Description complète des menacesExpert
Among the factors that seriously threaten Beaucarnea purpusii are overexploitation of its seeds, seedlings and adult individuals, their slow growth, and especially the loss of its habitat (Hernández-Sandoval, 2012). The extensive change in land use for the expansion of the agricultural frontier, cattle ranching and urban settlements has caused a continuing decline in the EOO, AOO, and habitat quality. Additionally, this species occurs in exposed areas where frequent fires with greater intensity occur every year, causing direct mortality. Another threat is the high levels of looting.

Habitats préférentiels (classification IUCN)

  • 3_5Shrubland - Subtropical/Tropical Dry★
Mesures de conservation recommandéesExpert
Beaucarnea purpusii occurs in the Biosphere Reserve "Tehuacán-Cuicatlán". This species was assessed as Vulnerable in 1997 (Walter and Gillett 1998). Beaucarnea purpusii is listed on the CITES Appendix II, in order to control the trade and avoid its incompatible use with species survival (CITES Checklist website 2019). At national level, B. purpusii is the only species of the genus that is included in the category of "Danger of extinction (P)" in the Official Mexican Standard NOM-059-SEMARNAT-2010 (BGCI 2019, SEMARNAT 2010). Additionally,  the species is known from four ex situ collections (BGCI 2019). There remains much work to do to preserve this species and commercialize it with minimal impact on wild populations. On the one hand, research on in vitro regeneration has been succesful and can be a plant source in the trade market to diminish the population pressure on wild specimens (Vadillo et al. 2016). On the other hand, there is a need for tools that can provide an integrated assessment of human impacts on this species range and that can support decision making related to the site/area protection. Therefore, it would be beneficial to recommend sustainable production activities and livelihood alternatives to the destruction of the species habitat. In addition, it is recommended to improve monitoring of the habitat, population, harvest level and trade trends. With respect to the research needed, a detailed study of B. purpusii and B. stricta would be convenient in order to clearly differentiate them, as many herbarium specimens have been wrongly labeled as one or the other species. They are morphologically similar and occur in the same area, so a detail study of their reproductive characters is neccesary (Rojas-Piña pers. comm. 2019).
Actions de conservation (1)Expert
  • 6_1Linked enterprises & livelihood alternatives
Stress écologiques (15)Expert
  • 1_1Ecosystem conversion
  • 1_1Ecosystem conversion
  • 1_1Ecosystem conversion
  • 1_2Ecosystem degradation
  • 1_2Ecosystem degradation
  • 1_2Ecosystem degradation
  • 1_2Ecosystem degradation
  • 1_2Ecosystem degradation
  • 2_1Species mortality
  • 2_1Species mortality
  • 2_1Species mortality
  • 2_1Species mortality
  • 2_1Species mortality
  • 2_2Species disturbance
  • 2_2Species disturbance
Usage & commerce (1)Expert
  • 13Pets/display animals, horticulture
    internationalnationalsubsistance
Priorités de recherche (5)Expert
  • 1_1Taxonomy
  • 3_1Population trends
  • 3_2Harvest level trends
  • 3_3Trade trends
  • 3_4Habitat trends
Niche IUCN globaleExpert

Royaumes biogéographiques

Neotropical

Systèmes (terrestre/eau douce/marin)

Terrestrial

Formes de croissance

Succulent - tree
Références bibliographiques (10)Expert
  1. IUCN. 2020. The IUCN Red List of Threatened Species. Version 2020-1. Available at: <a href="www.iucnredlist.org">www.iucnredlist.org</a>. (Accessed: 19 March 2020).
  2. CITES. 2019. CITES Species Database. Available at: <a href="http://speciesplus.net/">http://speciesplus.net/</a>.
  3. BGCI. 2019. Botanic Gardens Conservation International: Threat Search. Richmond Available at: <a href="http://www.bgci.org/threat_search.php">http://www.bgci.org/threat_search.php</a>. (Accessed: 2019).
  4. BGCI. 2018. Botanic Gardens Conservation International (BGCI) - Plant Search. Available at: <a href="https://www.bgci.org/plant_search.php">https://www.bgci.org/plant_search.php</a>.
  5. Rojas-Piña, V. and Alvarado-Cárdenas, L. 2016. <i>Beaucarnea olsonii</i> (Ruscaceae), a new species of ponytail palm from southwestern Puebla, Mexico. <i>Phytotaxa </i> 286(1): 13-22.
  6. Vadillo-Pro M., L. Hernández-Sandoval, G. Malda-Barrera, M. L. Osorio-Rosales, and M. Mata-Rosas. 2016. In vitro regeneration from longitudinal sections of seedlings of Beaucarnea purpusii Rose, an endemic and endangered species. <i>HortScience</i> 51(3): 279-284.
  7. Hernández-Sandoval, L., Osorio, M.L., Orellana, R., Martínez, M., Pérez, M.A., Contreras, A., Malda, G., Espadas, C., Almanza, K.E., Castillo, H.A. and Félix, A. 2012. Manejo y conservación de las especies con valor comercial de pata de elefante (Beaucarnea). Universidad Autónoma de Querétaro, Querétaro..
  8. Bachman, S., Moat, J., Hill, A. W., de Torre, J. & Scott, B. 2011. Supporting Red List threat assessments with GeoCAT: Geospatial conservation assessment tool. . <i>ZooKeys</i> 150: 117-126.
  9. NORMA Oficial Mexicana: NOM-059-SEMARNAT. 2010. Protección ambiental-Especies nativas de México de flora y fauna silvestres-Categorías de riesgo y especificaciones para su inclusión, exclusión o cambio-Lista de especies en riesgo.
  10. Walter K. S. and Gillett H. J. (eds). (1998) 1997. <i>IUCN Red List of Threatened Plants.</i> Compiled by the World Conservation Monitoring Centre. IUCN, World Conservation Union., Gland, Switzerland-Cambridge, UK.
Évaluateurs & contributeurs (2)Expert
assessor
Martínez Salas, E., Samain, M.-S. & Fuentes, A.C.D.
evaluator
Oldfield, S., Piña, V.R. & Hernández Sandoval, L.

Martínez Salas, E., Samain, M.-S. & Fuentes, A.C.D. 2020. Beaucarnea purpusii. The IUCN Red List of Threatened Species 2020: e.T162240208A162240880. 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

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Observations & statuts

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Cartographie

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Bibliographie

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