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CEGL002622 Juniperus occidentalis / Purshia tridentata / Festuca idahoensis - Pseudoroegneria spicata Wooded Grassland
Type Concept Sentence: No Data Available
Common (Translated Scientific) Name: Western Juniper / Antelope Bitterbrush / Idaho Fescue - Bluebunch Wheatgrass Wooded Grassland
Colloquial Name: No Data Available
Hierarchy Level: Association
Type Concept: This community exists as a savanna with scattered Juniperus occidentalis. The vegetation is dominated by Juniperus occidentalis trees with 3-40% cover. A shrub layer of Purshia tridentata with 6-20% cover is present. The graminoid layer is composed of Festuca idahoensis and Pseudoroegneria spicata with <1-35%, and <1-25% cover, respectively. Stands are found in east-central Oregon at elevations of 915-1510 m (3000-4950 feet) and may also occur in California. Sites occur on all aspects with slopes typically less than 30%, often at or near ridgetops. Soils are coarse sandy loams to loams with a stony character, usually derived from pumice or basalt.
Diagnostic Characteristics: No Data Available
Rationale for Nominal Species or Physiognomic Features: No Data Available
Classification Comments: This association is an aggregation of Johnson and Clausnitzer''s (1992) Juniperus occidentalis / Purshia tridentata / Festuca idahoensis - Agropyron spicatum and Volland''s (1976) Juniper / Bitterbrush / Bunchgrass communities.
Similar NVC Types: No Data Available
note: No Data Available
Physiognomy and Structure: No Data Available
Floristics: No Data Available
Dynamics: No Data Available
Environmental Description: No Data Available
Geographic Range: This association is fairly widespread in central Oregon, and is scattered from northeastern Oregon to southern Oregon. Stands likely occur in California, Nevada and possibly Idaho.
Nations: US
States/Provinces: CA?, OR
Plot Analysis Summary:
http://vegbank.org/natureserve/ELEMENT_GLOBAL.2.686444
Confidence Level: Low - Poorly Documented
Confidence Level Comments: No Data Available
Grank: G3
Greasons: No Data Available
| Type | Name | Database Code | Classification Code |
|---|---|---|---|
| Class | 1 Forest & Woodland Class | C01 | 1 |
| Subclass | 1.B Temperate & Boreal Forest & Woodland Subclass | S15 | 1.B |
| Formation | 1.B.2 Cool Temperate Forest & Woodland Formation | F008 | 1.B.2 |
| Division | 1.B.2.Nc Western North American Pinyon - Juniper Woodland & Scrub Division | D010 | 1.B.2.Nc |
| Macrogroup | 1.B.2.Nc.1 Singleleaf Pinyon - Utah Juniper - Western Juniper Intermountain Woodland Macrogroup | M896 | 1.B.2.Nc.1 |
| Group | 1.B.2.Nc.1.b Western Juniper Open Woodland Group | G248 | 1.B.2.Nc.1.b |
| Alliance | A3500 Western Juniper Grassy Open Woodland Alliance | A3500 | 1.B.2.Nc.1.b |
| Association | CEGL002622 Western Juniper / Antelope Bitterbrush / Idaho Fescue - Bluebunch Wheatgrass Wooded Grassland | CEGL002622 | 1.B.2.Nc.1.b |
Concept Lineage: No Data Available
Predecessors: No Data Available
Obsolete Names: No Data Available
Obsolete Parents: No Data Available
Synonomy: > Juniperus occidentalis / Purshia tridentata / Festuca idahoensis - Agropyron spicatum (Johnson and Clausnitzer 1992)
> Juniper / Bitterbrush / Bunchgrass (Volland 1976)
> Juniper / Bitterbrush / Bunchgrass (Volland 1976)
- Bourgeron, P. S., and L. D. Engelking, editors. 1994. A preliminary vegetation classification of the western United States. Unpublished report. The Nature Conservancy, Western Heritage Task Force, Boulder, CO. 175 pp. plus appendix.
- Johnson, C. G., and R. R. Clausnitzer. 1992. Plant associations of the Blue and Ochoco mountains. R6-ERW-TP-036-92. USDA Forest Service, Pacific Northwest Region, Wallowa-Whitman National Forest. 163 pp. plus appendices.
- Kagan, J. S., J. A. Christy, M. P. Murray, and J. A. Titus. 2004. Classification of native vegetation of Oregon. January 2004. Oregon Natural Heritage Information Center, Portland. 52 pp.
- Segura-Bustamante, M. 1970. Ecology of bitterbrush (Purshia tridentata (Pursh) DC) in the Silver Lake Deer Winter Range, Oregon. Unpublished dissertation, Oregon State University, Corvallis. 342 pp.
- Volland, L. A. 1976. Plant communities of the central Oregon pumice zone. USDA Forest Service R-6 Area Guide 4-2. Pacific Northwest Region, Portland, OR. 113 pp.
- Western Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Boulder, CO.