Overview

Distribution

Range Description

This species occurs on the summits of La Trinidad and El Azul mountain ranges, in San Luis Potosí, at one locality in Querétaro, and also in Nuevo León, Mexico. The species is known from twenty localities.
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Ecology

Habitat

Habitat and Ecology

Habitat and Ecology
It is found in areas of disturbed grassland and chaparral of Quercus striatula and Agave asperrima on the tops of mountains. The soils are relatively deep-dark clay, with limestone outcrops.

The cladodes of this species die back in the winter months and regrow in the spring, this is an adaptation to freezing and the impacts of fires.

Systems
  • Terrestrial
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Conservation

Conservation Status

IUCN Red List Assessment


Red List Category
EN
Endangered

Red List Criteria
B1ab(iii,v)

Version
3.1

Year Assessed
2013

Assessor/s
Hernández, H.M., Gómez-Hinostrosa, C. & Goettsch, B.K.

Reviewer/s
Chanson, J.S.

Contributor/s

Justification
This species qualifies as Endangered because it has a small extent of occurrence (ca 4,500 km²), its population is severely fragmented, the quality of its habitat is expected to decline in the long term due to the intensification of human activities, and there is a reduction in the number of individuals due to collecting for medicinal use.

History
  • 2002
    Vulnerable
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Population

Population
The population size is less than 10,000 mature individuals. The population is split into three discrete subpopulations.

Population Trend
Decreasing
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Threats

Major Threats
The natural vegetation is almost totally modified, due to livestock raising. The species is under some pressure due to its medicinal uses.
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Management

Conservation Actions

Conservation Actions
This species is listed on CITES Appendix II. It occurs (45% of the known subpopulations) within a decreed protected area (Area Natural Protegida del Real de Guadalcázar). The effective conservation of this area would ensure the survival of the species. The medicinal value of the species has to be verified through scientific research. Its possible utilization could lead to its conservation through management.
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Wikipedia

Opuntia pachyrrhiza

Opuntia pachyrrhiza is a species of plant in the Cactaceae family. It is endemic to Mexico. Its natural habitat is subtropical or tropical dry lowland grassland. It is threatened by habitat loss.

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