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CEGL000884 Pinus ponderosa - Quercus garryana / Symphoricarpos albus Woodland
Type Concept Sentence: No Data Available
Common (Translated Scientific) Name: Ponderosa Pine - Oregon White Oak / Common Snowberry Woodland
Colloquial Name: No Data Available
Hierarchy Level: Association
Type Concept: This association is an open woodland typified by large fire-resistant trees, found on the eastern edge of the Columbia River Gorge and at drier areas in western Oregon. It has only been found east of the Cascades in Washington and may occur California. Elevations range from 150-1100 m (500-3600 feet). Stands occur on all aspects with slopes averaging 27%. Soils are unknown, but probably well-drained. The tree canopy is dominated by Pinus ponderosa and Quercus garryana with 18% and 7% mean cover, respectively. The shrub layer includes sparse cover of Symphoricarpos albus (7%) and Purshia tridentata (3%). Mean cover of forbs includes Lupinus spp. (3%) and Collomia grandiflora (2%).
Diagnostic Characteristics: No Data Available
Rationale for Nominal Species or Physiognomic Features: No Data Available
Classification Comments: Two similar but drier types, ~Pinus ponderosa - Quercus garryana / Purshia tridentata Woodland (CEGL000883)$$ and Pinus ponderosa - Quercus garryana / Bunchgrass Woodland (not in USNVC), have been described from Oregon. Since both are so rare, this association includes any type in ~Quercus garryana - Pinus ponderosa / Carex geyeri Woodland Alliance (A3327)$$) from western Oregon and Washington. This type has not been found west of the Cascades in Washington (C. Chappell, WANHP, pers. comm.).
Similar NVC Types: No Data Available
note: No Data Available
Physiognomy and Structure: No Data Available
Floristics: The tree canopy is dominated by Pinus ponderosa and Quercus garryana with 18% and 7% mean cover, respectively. The shrub layer includes sparse cover of Symphoricarpos albus (7%) and Purshia tridentata (3%). Mean cover of forbs includes Lupinus spp. (3%) and Collomia grandiflora (2%).
Dynamics: No Data Available
Environmental Description: Stands occur on all aspects with slopes averaging 27%. Elevations range from 150-1100 m (500-3600 feet). Soils are unknown, but probably well-drained.
Geographic Range: This woodland association exists in the eastern Cascades in an area north and south of the Columbia River Gorge, where Quercus garryana expanded from the west. Similar stands may occur in California.
Nations: US
States/Provinces: CA?, OR, WA
Plot Analysis Summary:
http://vegbank.org/natureserve/ELEMENT_GLOBAL.2.686597
Confidence Level: Low - Poorly Documented
Confidence Level Comments: No Data Available
Grank: G2G3
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.Nd Vancouverian Forest & Woodland Division | D192 | 1.B.2.Nd |
| Macrogroup | 1.B.2.Nd.1 Southern Vancouverian Dry Foothill Forest & Woodland Macrogroup | M886 | 1.B.2.Nd.1 |
| Group | 1.B.2.Nd.1.b Oregon White Oak - Ponderosa Pine - Douglas-fir Forest & Woodland Group | G206 | 1.B.2.Nd.1.b |
| Alliance | A3327 Oregon White Oak - Ponderosa Pine / Geyer''s Sedge Woodland Alliance | A3327 | 1.B.2.Nd.1.b |
| Association | CEGL000884 Ponderosa Pine - Oregon White Oak / Common Snowberry Woodland | CEGL000884 | 1.B.2.Nd.1.b |
Concept Lineage: No Data Available
Predecessors: No Data Available
Obsolete Names: No Data Available
Obsolete Parents: No Data Available
Synonomy: = Pinus ponderosa - Quercus garryana / Symphoricarpos albus Association (John and Tart 1986)
- Atzet, T., and L. A. McCrimmon. 1990. Preliminary plant associations of the southern Oregon Cascade Mountain Province. USDA Forest Service, Pacific Northwest Region, Siskiyou National Forest, Grants Pass, OR. 330 pp.
- John, T., and D. Tart. 1986. Forested plant associations of the Yakima Drainage within the Yakama Indian Reservation. Review copy prepared for the Yakama Indian Nation - BIA-SCS.
- 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.
- WNHP [Washington Natural Heritage Program]. 2018. Unpublished data files. Washington Natural Heritage Program, Department of Natural Resources, Olympia, WA.
- Western Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Boulder, CO.