Polaskia Chende

The IUCN Red List of Threatened Species™ ISSN 2307-8235 (online) IUCN 2008: T151722A554113

Polaskia chende

Assessment by: Arias, S., Valverde, T. & Zavala-Hurtado, A.

View on www.iucnredlist.org

Citation: Arias, S., Valverde, T. & Zavala-Hurtado, A. 2013. Polaskia chende. The IUCN Red List of Threatened Species 2013: e.T151722A554113. http://dx.doi.org/10.2305/IUCN.UK.2013- 1.RLTS.T151722A554113.en

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THE IUCN RED LIST OF THREATENED SPECIES™ Taxonomy

Kingdom Phylum Class Order Family

Plantae Tracheophyta Magnoliopsida Caryophyllales Cactaceae

Taxon Name: Polaskia chende (Rol-.Goss.) A.C.Gibson & K.E.Horak

Synonym(s): • Cereus chende Rol-.Goss.

Taxonomic Source(s): Hunt, D., Taylor, N. and Charles, G. (compilers and editors). 2006. The New Cactus Lexicon. dh Books, Milborne Port, UK. Assessment Information

Red List Category & Criteria: Least Concern ver 3.1

Year Published: 2013

Date Assessed: April 29, 2009

Justification: Polaskia chende is a relatively widespread and abundant species, experiencing no known direct threats or continued decline. Hence, it is listed as Least Concern. Geographic Range

Range Description: This species is endemic to the Mexican States of Oaxaca and Puebla, where it is limited to the Tehuacán- Cuicatlán region. It grows at elevations of 1,500 to 2,000 m asl (Arias et al. 1997).

Country Occurrence: Native: Mexico (Oaxaca, Puebla)

© The IUCN Red List of Threatened Species: Polaskia chende – published in 2013. 1 http://dx.doi.org/10.2305/IUCN.UK.2013-1.RLTS.T151722A554113.en Population The density of the species varies throughout its range from five to 62 individuals per hectare (Mandujano et al. 2004). Current Population Trend: Stable

Habitat and Ecology (see Appendix for additional information) The species occurs in xerophyllous scrub and riparian vegetation. It flowers between August and January (Arias et al. 1997). Studies comparing the genetic variability between managed and wild populations of P. chende show that there are no significant differences, showing that management can be effective for the conservation of the genetic variability of the species (Blancas et al. 2006).

Systems: Terrestrial

Use and Trade (see Appendix for additional information) The fruits are edible and consumed locally (Arias et al. 1997). Threats There are no major threats to the species. Many subpopulations are stable because the species is locally managed and preserved for its edible fruits, however, other subpopulations may be affected by land use change and fragmentation.

Conservation Actions (see Appendix for additional information) The species occurs within the Tehuacán-Cuicatlán Biosphere Reserve (Mandujano et al. 2004). Credits

Assessor(s): Arias, S., Valverde, T. & Zavala-Hurtado, A.

Reviewer(s): Superina, M. & Goettsch, B.K.

Facilitators(s) and Goettsch, B.K. Compiler(s):

© The IUCN Red List of Threatened Species: Polaskia chende – published in 2013. 2 http://dx.doi.org/10.2305/IUCN.UK.2013-1.RLTS.T151722A554113.en Bibliography Arias, M.S., Gama, S. and Guzmán, U. 1997. Flora del Valle de Tehuacán-Cuicatlán. Fasículo 14. Cactaceae A.L. Juss. Instituto de Biología, UNAM, Mexico.

Blancas, J.J., F. Parra, J.D. Lucio, M.E. Ruíz-Durán, E. Pérez-Negrón, A. Otero-Arnaiz, N. Pérez-Nasser & A. Casas. 2006. Manejo tradicional y conservación de la biodiversidad de Polaskia spp. (Cactaceae) en México. Zonas Áridas 10.

IUCN. 2013. IUCN Red List of Threatened Species (ver. 2013.1). Available at: http://www.iucnredlist.org. (Accessed: 12 June 2013).

Mandujano, M. del C., J. Golubov, C. Rodríguez-Ortega, J. Reyes, G. Aguilar & M. Rojas-Arechiga. 2004. Estructura poblacionla y distribución de poblaciones de Polaskia chende (Gosselin) Backeb., en un municipio dentro de la Reserva de la Biosfera de Tehuacán-Cuicatlán. Cactáceas y Suculentas Mexicanas 49(2): 36-60.

Citation Arias, S., Valverde, T. & Zavala-Hurtado, A. 2013. Polaskia chende. The IUCN Red List of Threatened Species 2013: e.T151722A554113. http://dx.doi.org/10.2305/IUCN.UK.2013-1.RLTS.T151722A554113.en

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External Resources For Images and External Links to Additional Information, please see the Red List website.

Habitats (http://www.iucnredlist.org/technical-documents/classification-schemes)

Major Season Suitability Habitat Importance? 3. Shrubland -> 3.5. Shrubland - Subtropical/Tropical Dry Resident Suitable Yes

Use and Trade (http://www.iucnredlist.org/technical-documents/classification-schemes)

End Use Local National International Food - human Yes No No

Conservation Actions in Place (http://www.iucnredlist.org/technical-documents/classification-schemes)

Conservation Actions in Place In-Place Land/Water Protection and Management

Occur in at least one PA: Yes

In-Place Education

Included in international legislation: Yes

Subject to any international management/trade controls: Yes

Research Needed (http://www.iucnredlist.org/technical-documents/classification-schemes)

Research Needed 1. Research -> 1.2. Population size, distribution & trends

1. Research -> 1.3. Life history & ecology

Additional Data Fields

Distribution Estimated extent of occurrence (EOO) (km²): 10000

Lower elevation limit (m): 1500

Upper elevation limit (m): 2000

© The IUCN Red List of Threatened Species: Polaskia chende – published in 2013. 5 http://dx.doi.org/10.2305/IUCN.UK.2013-1.RLTS.T151722A554113.en The IUCN Red List of Threatened Species™ ISSN 2307-8235 (online) IUCN 2008: T151722A554113

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