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CEGL000160 Pinus contorta / Purshia tridentata / Festuca idahoensis Woodland
Type Concept Sentence: No Data Available
Common (Translated Scientific) Name: Lodgepole Pine / Antelope Bitterbrush / Idaho Fescue Woodland
Colloquial Name: No Data Available
Hierarchy Level: Association
Type Concept: This association thrives along the eastern flanks of the Cascade Range of central Oregon. Pinus contorta var. latifolia dominates the overstory and is considered climax. A component of Pinus ponderosa may exist as understory in higher elevation stands. Purshia tridentata is the sole dominating shrub except where a shallow water table occurs. Associated shrubs may include Ribes cereum var. cereum and Arctostaphylos uva-ursi. The herb layer is typified by Festuca idahoensis with lesser amounts of Carex rossii, Achnatherum occidentale, Elymus elymoides, Penstemon cinicola, and Lupinus caudatus. Occurrences are supported by generally low-gradient slopes at elevations between 1280-1740 m (4200-5700 feet). Soils are loamy coarse sand to sandy loams over pumice. Fire maintains Pinus contorta var. latifolia forests in this area.
Diagnostic Characteristics: No Data Available
Rationale for Nominal Species or Physiognomic Features: No Data Available
Classification Comments: There is only one source (Volland 1976) that has documented this type. However, it appears distinctive, restricted to the Mazama pumice zone.
Similar NVC Types: No Data Available
note: No Data Available
Physiognomy and Structure: No Data Available
Floristics: Pinus contorta var. latifolia dominates the overstory at 35-60% cover and is considered climax. A component of Pinus ponderosa may exist as understory in higher elevation stands. Purshia tridentata is the sole dominating shrub (0-25% cover) except where a shallow water table occurs. Associated shrubs may include Ribes cereum var. cereum and Arctostaphylos uva-ursi. The herb layer is typified by Festuca idahoensis (5-30% cover) with lesser amounts of Carex rossii, Achnatherum occidentale (= Stipa occidentalis), Elymus elymoides (= Sitanion hystrix), Penstemon cinicola, and Lupinus caudatus.
Dynamics: Fire maintains Pinus contorta var. latifolia forests in this area.
Environmental Description: This association thrives along the eastern flanks of the Cascade Range of central Oregon. Occurrences are supported by generally low-gradient slopes at elevations between 1280-1740 m (4200-5700 feet). Soils are loamy coarse sand to sandy loams over pumice. Fire maintains Pinus contorta var. latifolia forests in this area.
Geographic Range: This association is found along the eastern flanks of the Cascade Range of central Oregon. Similar types have been described in California, but this type has not.
Nations: US
States/Provinces: OR
Plot Analysis Summary:
http://vegbank.org/natureserve/ELEMENT_GLOBAL.2.688487
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.Nb Rocky Mountain Forest & Woodland Division | D194 | 1.B.2.Nb |
| Macrogroup | 1.B.2.Nb.5 Subalpine Fir - Engelmann Spruce - Whitebark Pine Rocky Mountain Forest Macrogroup | M020 | 1.B.2.Nb.5 |
| Group | 1.B.2.Nb.5.a Lodgepole Pine Rocky Mountain Forest & Woodland Group | G220 | 1.B.2.Nb.5.a |
| Alliance | A4079 Lodgepole Pine Rocky Mountain Woodland Alliance | A4079 | 1.B.2.Nb.5.a |
| Association | CEGL000160 Lodgepole Pine / Antelope Bitterbrush / Idaho Fescue Woodland | CEGL000160 | 1.B.2.Nb.5.a |
Concept Lineage: No Data Available
Predecessors: No Data Available
Obsolete Names: No Data Available
Obsolete Parents: No Data Available
Synonomy: = Lodgepole Pine / Bitterbrush / Fescue (Volland 1985)
- 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.
- 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.
- 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.
- Volland, L. A. 1985. Plant associations of the central Oregon pumice zone. USDA Forest Service R6-ECOL-104-1985. Pacific Northwest Region, Portland, OR. 138 pp.
- Western Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Boulder, CO.