Juniperus saltillensis 


Taxonomy [top]

Kingdom Phylum Class Order Family
Plantae Tracheophyta Pinopsida Pinales Cupressaceae

Scientific Name: Juniperus saltillensis
Species Authority: M.T.Hall
Taxonomic Source(s): Farjon, A. 2010. A Handbook of the World's Conifers. Koninklijke Brill, Leiden.

Assessment Information [top]

Red List Category & Criteria: Endangered B2ab(ii,iii,v) ver 3.1
Year Published: 2013
Date Assessed: 2011-05-31
Assessor(s): Farjon, A.
Reviewer(s): Adams, R & Thomas, P.
This species has a wide range (extent of occurrence) largely due to two or three outlying localities; the main distribution is in a much more limited area around the borders of Nuevo León, Zacatecas and Coahuila. Here almost all herbarium collections were made since 1940. The increasing pressure on this subpopulation due to ‘range improvement’ is interpreted as causing continuous decline. The area of occupancy is probably smaller than here calculated because it often occurs as widely scattered shrubs (severely fragmented) in open landscapes.
Previously published Red List assessments:
1998 Lower Risk/least concern (LR/lc)

Geographic Range [top]

Range Description: Endemic to Mexico: Chihuahua, Coahuila, Nuevo León and Zacatecas.
Countries occurrence:
Mexico (Chihuahua, Coahuila, Nuevo León, Zacatecas)
Estimated area of occupancy (AOO) - km2: 368
Number of Locations: 8-10
Lower elevation limit (metres): 1800
Upper elevation limit (metres): 2900
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: This can be an aggressive species that moves into disturbed habitat. However, due to cutting for fuel and some fence posts (larger trees), goat browsing of seedlings and the general state of habitat degradation in the deserts of Mexico, it is in overall decline, especially near towns. It may be more stable in less disturbed areas
Current Population Trend: Decreasing
Additional data:
Continuing decline of mature individuals: Yes
Population severely fragmented: Yes

Habitat and Ecology [top]

Habitat and Ecology: Juniperus saltillensis is sometimes an understorey shrub in Pinyon-Juniper woodland or open Pinus-Quercus or Quercus forest, with Pinus cembroides, Juniperus spp., and Acacia sp., or occurs in the ecotone to Bouteloua grassland with e.g. Opuntia sp., Agave sp., and Ephedra sp.; predominantly on limestone in the semi-arid zone (rainshadow) of mountain ranges. The altitudinal range is from 1,800 m to 2,900 m a.s.l.
Systems: Terrestrial
Continuing decline in area, extent and/or quality of habitat: Yes
Generation Length (years): 30

Use and Trade [top]

Use and Trade: May be used for fence posts and firewood

Threats [top]

Major Threat(s): This species occurs partly in areas with grassland and trees/shrubs that are subject to clearing for pasture improvement (Adams 2011) and is likely to be in decline in these situations. Intensive grazing is likely to negatively impact regeneration in the open pasture and restrict opportunities to within thorny shrubbery

Conservation Actions [top]

Conservation Actions: This species is in need of protection from grazing cattle and other animals.

Citation: Farjon, A. 2013. Juniperus saltillensis. The IUCN Red List of Threatened Species 2013: e.T42250A2966947. . Downloaded on 01 December 2015.
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