Juniperus jaliscana 

Scope: Global
Language: English

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Taxonomy [top]

Kingdom Phylum Class Order Family
Plantae Tracheophyta Pinopsida Pinales Cupressaceae

Scientific Name: Juniperus jaliscana Martínez
Common Name(s):
Spanish Cedro
Taxonomic Source(s): Farjon, A. 2010. A Handbook of the World's Conifers. Koninklijke Brill, Leiden.

Assessment Information [top]

Red List Category & Criteria: Endangered B1ab(ii,iii,v)+2ab(ii,iii,v) ver 3.1
Year Published: 2013
Date Assessed: 2011-05-27
Assessor(s): Farjon, A.
Reviewer(s): Adams, R & Thomas, P.
Known from two locations, which are ca. 250 km apart. At the locality in Durango, no collections have been made since the 1940s; all other verified collections are from near Cuale, Jalisco, between 1944 and 1991. The area of occupancy is based on these collections, using a grid width of 2 km which is reasonable as the species apparently occurs along a few km of road between Cuale and Talpa de Allende, and possibly further from the road where collections are less likely to be made. A continuing decline is inferred from reports observing cutting and land clearing for pasture (Adams 2011). This species therefore meets the criteria for Endangered under B1 and B2
Previously published Red List assessments:

Geographic Range [top]

Range Description:Endemic to Mexico: southern Durango, northwestern Jalisco, only known from two localities in Pueblo Nuevo, the Sierra Madre Occidental and Cuale in Jalisco.
Countries occurrence:
Mexico (Durango, Jalisco)
Additional data:
Estimated area of occupancy (AOO) - km2:20Continuing decline in area of occupancy (AOO):Yes
Estimated extent of occurrence (EOO) - km2:3108
Number of Locations:2
Lower elevation limit (metres):430
Upper elevation limit (metres):2670
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:No specific information about population size is currently available.
Current Population Trend:Decreasing
Additional data:
Continuing decline of mature individuals:Yes
Population severely fragmented:Yes

Habitat and Ecology [top]

Habitat and Ecology:The ecology of this species is not well known. Some specimens have been collected in goat pasture, with the grasses frequently burned, on steep, weathered granitic slopes, i.e. disturbed secondary vegetation. The altitudinal range is reported to be from 430 m to 2,670(?) m. The divergent altitudes of the two localities are remarkable; whereby it must be stated that the high altitude was reported for the locality that has not been relocated.
Continuing decline in area, extent and/or quality of habitat:Yes
Generation Length (years):30

Use and Trade [top]

Use and Trade: No specific uses have been recorded.

Threats [top]

Major Threat(s): This species is only known from two localities, one of which, (the place in Durango where C.E. Blanco collected it), has not been found back recently nor traced on the map. Juniperus jaliscana occurs in grazed secondary vegetation as well as in woods (at the higher altitude in Durango). It is listed as Endangered even though it is likely that a thorough exploration of the relevant regions would turn out more individuals or even populations

Conservation Actions [top]

Conservation Actions: This species has not been recorded from any protected area.

Citation: Farjon, A. 2013. Juniperus jaliscana. The IUCN Red List of Threatened Species 2013: e.T31086A2802346. . Downloaded on 25 April 2018.
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