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CEGL000552 Quercus garryana / Pseudoroegneria spicata Woodland
Type Concept Sentence: No Data Available
Common (Translated Scientific) Name: Oregon White Oak / Bluebunch Wheatgrass Woodland
Colloquial Name: No Data Available
Hierarchy Level: Association
Type Concept: This is a deciduous woodland association found along lower treeline in the eastern Cascades near the Columbia River gorge, primarily in Washington. This type appears on slopes or ridgetops that are the driest and hottest sites supporting trees. They generally are found between 610 and 760 m (2000-2500 feet) elevation. The existing vegetation is characterized by an open Quercus garryana layer occasionally with a few individual Pinus ponderosa trees. The tree canopy is mostly open and only rarely approaches being a closed stand when Quercus garryana clones merge. Purshia tridentata may be present but is never dominant. The herbaceous layer is graminoid-dominated primarily by Pseudoroegneria spicata and Bromus tectorum.
Diagnostic Characteristics: No Data Available
Rationale for Nominal Species or Physiognomic Features: No Data Available
Classification Comments: No Data Available
Similar NVC Types: No Data Available
note: No Data Available
Physiognomy and Structure: No Data Available
Floristics: The existing vegetation is characterized by an open Quercus garryana layer occasionally with a few individual Pinus ponderosa trees. The tree canopy is mostly open and only rarely approaches being a closed stand when Quercus garryana clones merge. Purshia tridentata may be present but is never dominant. The herbaceous layer is graminoid-dominated primarily by Pseudoroegneria spicata and Bromus tectorum.
Dynamics: No Data Available
Environmental Description: This is a deciduous woodland association found along lower treeline in the eastern Cascades near the Columbia River gorge, primarily in Washington. This type appears on slopes or ridgetops that are the driest and hottest sites supporting trees. They generally are found between 610 and 760 m (2000-2500 feet) elevation.
Geographic Range: This woodland is restricted to a narrow zone in two counties in Washington and two in Oregon.
Nations: US
States/Provinces: OR, WA
Plot Analysis Summary:
http://vegbank.org/natureserve/ELEMENT_GLOBAL.2.688184
Confidence Level: Low - Poorly Documented
Confidence Level Comments: No Data Available
Grank: G1G2
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 | CEGL000552 Oregon White Oak / Bluebunch Wheatgrass Woodland | CEGL000552 | 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: = Quercus garryana / Agropyron spicatum (Lillybridge et al. 1995) [QUGA/AGSP ASSOCIATION HOG111]
- 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.
- 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.
- Lillybridge, T. R., B. L. Kovalchik, C. K. Williams, and B. G. Smith. 1995. Field guide for forested plant associations of the Wenatchee National Forest. General Technical Report PNW-GTR-359. USDA Forest Service, Pacific Northwest Research Station, Portland, OR. 335 pp.
- ORNHP [Oregon Natural Heritage Program]. No date. Unpublished data files. Oregon Natural Heritage Program, The Nature Conservancy, Portland, OR.
- 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.
- Williams, C. K., and B. G. Smith. 1990. Forested plant associations of the Wenatchee National Forest. Unpublished draft prepared by the USDA Forest Service, Pacific Northwest Region, Portland, OR. 217 pp.