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CEGL000548 Quercus garryana / Carex inops ssp. inops - Camassia quamash Woodland
Type Concept Sentence: No Data Available
Common (Translated Scientific) Name: Oregon White Oak / Long-stolon Sedge - Small Camas Woodland
Colloquial Name: No Data Available
Hierarchy Level: Association
Type Concept: This woodland association occurs in western Washington around the Puget Sound area, and the description provided here is compiled from known occurrences in this area. It is found from 45 to 427 m (150-1400 feet) elevation on slopes with sunny aspects (southeast to west). Slope steepness is variable (0-82% slope, mean 21%), and sites include shallow soils over rock outcrops, bedrock, or on deep-soil, coarse-textured, gravelly outwash plains. These are dry to very dry sites that appear to be relatively nitrogen-rich. Topopositions include mid, upper and ridgetop slopes. This association includes woodlands or forests dominated by Quercus garryana. The understory is dominated by herbaceous vegetation; most commonly Carex inops ssp. inops and the non-native Poa pratensis are codominant. Elymus glaucus is usually present and often codominant as well. Festuca idahoensis ssp. roemeri, Festuca rubra, Dactylis glomerata, and Agrostis capillaris can also be prominent to codominant. A relatively low-growing shrub layer varies from absent to prominent. Symphoricarpos albus var. laevigatus, Mahonia aquifolium, Cytisus scoparius, and Amelanchier alnifolia are usually present. A variety of native and non-native forbs can be present. The most abundant native forb in terms of cover is Camassia quamash, though it is not consistently present. Achillea millefolium var. occidentalis, Ranunculus occidentalis var. occidentalis, and Galium aparine are usually present. The diagnostic characteristics of this woodland (tree cover >25%) include dominance by Quercus garryana with an herbaceous-dominated understory and significant native understory component. Carex inops usually codominates, and Camassia quamash or Ranunculus occidentalis var. occidentalis are usually present.
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: This information is compiled from the known occurrences in Washington; additional data from British Columbia needs to be incorporated. This association includes woodlands or forests dominated by Quercus garryana. The understory is dominated by herbaceous vegetation; most commonly Carex inops ssp. inops and the non-native Poa pratensis are codominant. Elymus glaucus is usually present and often codominant as well. Excellent-condition occurrences usually have some Festuca idahoensis ssp. roemeri (= Festuca roemeri). Festuca rubra, Dactylis glomerata, and Agrostis capillaris can also be prominent to codominant. A relatively low-growing shrub layer varies from absent to prominent. Symphoricarpos albus var. laevigatus, Mahonia aquifolium, Cytisus scoparius, and Amelanchier alnifolia are usually present. A variety of native and non-native forbs can be present. The most abundant native forb in terms of cover is Camassia quamash, though it is not consistently present. Achillea millefolium var. occidentalis, Ranunculus occidentalis var. occidentalis, and Galium aparine are usually present. State-sensitive Sericocarpus rigidus (= Aster curtus) occurs in this association in the South Puget Sound area. Many unlisted plant species associated with this vegetation are probably declining in the Puget Trough.
Dynamics: This association is fire-associated. In the presettlement landscape (with more frequent fires), these sites probably supported some oak savanna, some grassland vegetation, and perhaps some vegetation similar in physiognomy and composition to the existing vegetation. In the absence of fire or active management, most of these stands are being invaded by Pseudotsuga menziesii trees and/or shrubs, such as Symphoricarpos albus var. laevigatus and Cytisus scoparius, and are likely to convert to ~Quercus garryana / Symphoricarpos albus / Carex inops ssp. inops Woodland (CEGL003358)$$, ~Quercus garryana / Symphoricarpos albus / Polystichum munitum Forest (CEGL003353)$$, or non-native understory vegetation. Stands on shallow soils appear more resistant to successional changes leading to conversion to Pseudotsuga menziesii forest.
Environmental Description: This association occurs at 45 to 427 m (150-1400 feet) elevation on slopes with sunny aspects (southeast to west) with 0-82% slope (mean 21) and shallow soils over rock outcrops, bedrock, or on deep-soil, coarse-textured, gravelly outwash plains. These are dry to very dry sites that appear to be relatively nitrogen-rich. Topopositions include mid, upper and ridgetop slopes. Annual precipitation is 76-135 cm (30-53 inches) (mean 114 cm [45 inches]).
Geographic Range: This woodland association occurs in western Washington around the Puget Sound area.
Nations: CA?,US
States/Provinces: BC?, WA
Plot Analysis Summary:
http://vegbank.org/natureserve/ELEMENT_GLOBAL.2.689662
Confidence Level: Moderate
Confidence Level Comments: No Data Available
Grank: G1
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 | A3328 Oregon White Oak - Douglas-fir / Pacific Poison-oak Forest & Woodland Alliance | A3328 | 1.B.2.Nd.1.b |
| Association | CEGL000548 Oregon White Oak / Long-stolon Sedge - Small Camas Woodland | CEGL000548 | 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 / Carex inops - (Camassia quamash) (Chappell 2006b) [15 plots]
- 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.
- Chappell, C. B. 2006b. Upland plant associations of the Puget Trough ecoregion, Washington. Natural Heritage Report 2006-01. Washington Department of Natural Resources, Natural Heritage Program, Olympia, WA. [http://www.dnr.wa.gov/nhp/refdesk/communities/pdf/intro.pdf]
- Franklin, J. F., and C. T. Dyrness. 1973. Natural vegetation of Oregon and Washington. General Technical Report PNW-8. USDA Forest Service, Pacific Northwest Forest and Range Experiment Station, Portland, OR. 417 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.