Taxonomy [top]

Kingdom Phylum Class Order Family
Plantae Tracheophyta Pinopsida Pinales Cupressaceae

Scientific Name: Juniperus gamboana
Species Authority: Martínez
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: 2011-05-26
Assessor(s): Farjon, A.
Reviewer(s): Thomas, P. & Adams, R

Distribution data for Chiapas based on herbarium specimens are fairly complete, for Guatemala, no data were found but Adams (2011) mentions one locality in the Sierra de los Cuchumatanes. With this included, the area of occupancy is well under 500 km² (144 km² with a grid width of 3 km) and deforestation and conversion of lands to grazing pastures are inferred to cause a continuing decline (e.g. Adams, 2011, p. 174). The taxon must be very rare in Guatemala. On these grounds it meets the criteria for Endangered under B2.

Previously published Red List assessments:
1998 Vulnerable (VU)
1998 Vulnerable (V)

Geographic Range [top]

Range Description: Recorded from southern Mexico (Chiapas) and Guatemala (Huehuetenango).
Countries occurrence:
Guatemala; Mexico (Chiapas)
Estimated area of occupancy (AOO) - km2: 144
Continuing decline in area of occupancy (AOO): Yes
Estimated extent of occurrence (EOO) - km2: 8487
Number of Locations: 4
Lower elevation limit (metres): 1820
Upper elevation limit (metres): 2200
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: Small regional distribution; subpopulations are assumed to small and localized.
Current Population Trend: Decreasing
Additional data:
Continuing decline of mature individuals: Yes
Extreme fluctuations: No Population severely fragmented: Yes

Habitat and Ecology [top]

Habitat and Ecology: This species occurs in the understorey of, or mixed with other trees in Quercus-Pinus-Juniperus forests, bearing many epiphytes indicating frequent fog conditions, on often rocky soil types; also in open pine forest, e.g. with Pinus oocarpa, where J. gamboana attains greatest size. The known altitudinal range is 1,820-2,200 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: No uses have been recorded.

Threats [top]

Major Threat(s): Due to its very limited range (most collections known are from Chiapas, Mexico) in an area which suffers rapid deforestation, the species is likely to have suffered a significant reduction in its area of occupancy (AOO) as well as its overall numbers of mature trees. The situation in Guatemala with this species is poorly known, but it must be very rare as a search for herbarium specimen data yielded none from that country.

Conservation Actions [top]

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

Citation: Farjon, A. 2013. Juniperus gamboana. The IUCN Red List of Threatened Species 2013: e.T34136A2847462. . Downloaded on 05 October 2015.
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