Ceratozamia zaragozae

Taxonomy

Assessment Information

Geographic Range

Population

Habitat and Ecology

Threats

Conservation Actions

Bibliography

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Taxonomy [top]

Kingdom	Phylum	Class	Order	Family
PLANTAE	TRACHEOPHYTA	CYCADOPSIDA	CYCADALES	ZAMIACEAE

Scientific Name:	Ceratozamia zaragozae
Species Authority:	Medellín-Leal

Assessment Information [top]

Red List Category & Criteria:

Critically Endangered A2acd; B1ab(iii,iv,v)+2ab(iii,iv,v); C1 ver 3.1

Year Published:

2010

Assessor/s:

Chemnick, J & Gregory, T.

Reviewer/s:

Donaldson, J.S. & Bösenberg, J.D.

Contributor/s:

Justification:
Qualifies for Critically Endangered based on extent of decline (95%) over the past 50 years, occurrence in a single location with a small extent of occurrence (45 km²) and area of occupancy (<10 km²) and small population size.

History:

2003	–	Critically Endangered (IUCN 2003)
2003	–	Critically Endangered
1997	–	Endangered (Walter and Gillett 1998)

Geographic Range [top]

Range Description:	This species is endemic to San Luis Potosí state, Mexico. Plants are found SW of Rio Verde, in the Capulin district.
Countries:	Native: Mexico (San Luis Potosí)
Range Map:	Click here to open the map viewer and explore range.

Population [top]

Population:	Plants are only known from the type locality, at which there are less than 50 plants.
Population Trend:	Decreasing

Habitat and Ecology [top]

Habitat and Ecology:	Plants grow in the Sierra de la Equiteria, in dry pine-oak forests on volcanic outcrops and in rhyolitic soils.
Systems:	Terrestrial

Threats [top]

Major Threat(s):	Plants have been severely affected by over-collection, to the point of being almost eradicated in certain areas.

Major Threat(s):

Plants have been severely affected by over-collection, to the point of being almost eradicated in certain areas.

Conservation Actions [top]

Conservation Actions:	This species is listed on Appendix I of the CITES Appendices.

Conservation Actions:

This species is listed on Appendix I of the CITES Appendices.

Bibliography [top]

	Donaldson, J.S. 2006. Notes. Donaldson, J.S. (ed.). 2003. Cycads. Status Survey and Conservation Action Plan. IUCN/SSC Cycad Specialist Group. IUCN, Gland, Switzerland and Cambridge, UK. Hill, K.D. and Stevenson, D.W. 1998-2006. The Cycad Pages. Available at: http://plantnet.rbgsyd.gov.au/PlantNet/cycad/. IUCN. 2010. IUCN Red List of Threatened Species (ver. 2010.3). Available at: http://www.iucnredlist.org. (Accessed: 2 September 2010). Jones, D.L. 1993. Cycads of the World. Reed, New Holland, Frenchs Forest, N.S.W., Australia. Whitelock, L.M. 2002. The Cycads. Timber Press, Portland, Oregon.

Donaldson, J.S. 2006. Notes.

Donaldson, J.S. (ed.). 2003. Cycads. Status Survey and Conservation Action Plan. IUCN/SSC Cycad Specialist Group. IUCN, Gland, Switzerland and Cambridge, UK.

Hill, K.D. and Stevenson, D.W. 1998-2006. The Cycad Pages. Available at: http://plantnet.rbgsyd.gov.au/PlantNet/cycad/.

IUCN. 2010. IUCN Red List of Threatened Species (ver. 2010.3). Available at: http://www.iucnredlist.org. (Accessed: 2 September 2010).

Jones, D.L. 1993. Cycads of the World. Reed, New Holland, Frenchs Forest, N.S.W., Australia.

Whitelock, L.M. 2002. The Cycads. Timber Press, Portland, Oregon.

Citation:	Chemnick, J & Gregory, T. 2010. Ceratozamia zaragozae. In: IUCN 2012. IUCN Red List of Threatened Species. Version 2012.2. <www.iucnredlist.org>. Downloaded on 21 May 2013.
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