Dioon spinulosum

Taxonomy

Assessment Information

Geographic Range

Population

Habitat and Ecology

Threats

Conservation Actions

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Taxonomy [top]

Kingdom	Phylum	Class	Order	Family
PLANTAE	TRACHEOPHYTA	CYCADOPSIDA	CYCADALES	ZAMIACEAE

Scientific Name:	Dioon spinulosum
Species Authority:	Dyer ex Eichl.

Assessment Information [top]

Red List Category & Criteria:

Endangered A2acd ver 3.1

Year Published:

2010

Assessor/s:

Vovides, A. Chemnick, J. & Gregory, T.

Reviewer/s:

Donaldson, J.S. & Bösenberg, J.D.

Contributor/s:

Justification:
Data from known populations indicates a decline of between 50% and 90% in different subpopulations, with an estimated overall decline of 70% over the past 2 generations, which results a status of EN (criterion A)

History:

2003	–	Vulnerable (IUCN 2003)
2003	–	Vulnerable
1997	–	Rare (Walter and Gillett 1998)

Geographic Range [top]

Range Description:	This species occurs in the Oaxaca and Veracruz states of Mexico. They are found near the towns of Ciudad Aleman, Tuxtepec and Ojitlan, on the lowlands and hills at the foot of the Sierra de Oaxaca.
Countries:	Native: Mexico (Oaxaca, Veracruz)
Range Map:	Click here to open the map viewer and explore range.

Population [top]

Population:	This species occurs in at least three locations
Population Trend:	Decreasing

Habitat and Ecology [top]

Habitat and Ecology:	This species is found growing in lowland tropical evergreen rainforest on limestone hills and cliffs.
Systems:	Terrestrial

Threats [top]

Major Threat(s):	This species is affected by severe habitat destruction as a result of farming, ranching and creation of reservoirs. There has been severe over-collection in the past.

Major Threat(s):

This species is affected by severe habitat destruction as a result of farming, ranching and creation of reservoirs. There has been severe over-collection in the past.

Conservation Actions [top]

Conservation Actions:	This species is listed on Appendix II of the CITES Appendices. Plants are protected by local communities.

Conservation Actions:

This species is listed on Appendix II of the CITES Appendices. Plants are protected by local communities.

Citation:	Vovides, A. Chemnick, J. & Gregory, T. 2010. Dioon spinulosum. In: IUCN 2012. IUCN Red List of Threatened Species. Version 2012.2. <www.iucnredlist.org>. Downloaded on 18 June 2013.
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