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Utah Juniper - Juniperus osteosperma

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Global Rank: G5
State Rank: S4
* (see State Rank Reason below)

Agency Status
USFWS:
USFS:
BLM:
MNPS Threat Rank:

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State Rank Reason (see State Rank above)
See rank details
  • Details on Status Ranking and Review
    Utah Juniper (Juniperus osteosperma) Conservation Status Review
    Review Date = 05/24/2012
    Population Size

    Score1 - Moderate: Generally 10,000-100,000 individuals.

    Comment

    Range Extent

    Score1 - Peripheral, Disjunct or Sporadic Distribution in MT: Widespread species that is peripheral, disjunct or sporadically distributed within MT such that it occurs in <5% of the state (<7,500 sq. miles or the combined area of Beaverhead and Ravalli Counties) or is restricted to 4-5 sub-basins.

    Comment

    Area of Occupancy

    Score1 - Moderate: Generally occurring in 11-25 Subwatersheds (6th Code HUC’s).

    Comment

    Trends

    Score0 - Stable or Increasing: Population size, range, and/or available habitat stable, increasing or fluctuating in the recent past (approximately 30 years).

    Comment

    Threats

    Score0 - Low: Impacts, if any, to the species are expected to be minor or insignificant (affecting <10% of populations) in severity, scope and immediacy.

    Comment

    Intrinsic Vulnerability

    Score0 - Low Vulnerability: Species does not have any unusual or specific life history or biological attributes or limted reproductive potential which makes it susceptible to extirpation from stochastic events or other adverse impacts to its habitat and thus slow to recover.

    Comment

    Environmental Specificity

    Score1 - Moderate: Species is restricted to a specific habitat that is more widely distributed or to several restricted habitats and is typically dependent upon relatively unaltered, good-quality habitat (C Values of 5-7).

    Comment

    Raw Conservation Status Score

    Score 4 total points scored out of a possible 19.

 
General Description
Erect shrub or small tree up to 6 m with stringy, grey-brown bark and spreading or ascending branches. Leaves opposite or in whorls of 3, scale-like, 1–2 mm long, yellowish with denticulate margins; juvenile leaves needle-like, 3–5 mm long. Seed cones maturing in 1 to 2 years, 1-seeded, blue-brown, 6–8 mm long (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Range Comments
Big Horn and Carbon counties; MT and WY south to CA, AZ, and NM (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Summary of Observations Submitted for Montana
Number of Observations: 51

(Click on the following maps and charts to see full sized version) Map Help and Descriptions
Relative Density

Recency

 

(Records associated with a range of dates are excluded from time charts)



Habitat
Limestone or calcareous sandstone outcrops, slopes and ridges; valleys to montane (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

References
  • Additional ReferencesLegend:   View WorldCat Record   View Online Publication
    Do you know of a citation we're missing?
    • Lesica, P. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX.
    • Little, E.L., Jr. 1979. Checklist of United States trees (native and naturalized). Agriculture Handbook No. 541. U.S. Forest Service, Washington, D.C. 375 pp.
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Citation for data on this website:
Utah Juniper — Juniperus osteosperma.  Montana Field Guide.  Montana Natural Heritage Program.  Retrieved on December 20, 2014, from http://FieldGuide.mt.gov/speciesDetail.aspx?elcode=PGCUP050A0
 
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