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CEGL002601 Abies grandis / Bromus vulgaris Forest
Type Concept Sentence: No Data Available
Common (Translated Scientific) Name: Grand Fir / Columbia Brome Forest
Colloquial Name: No Data Available
Hierarchy Level: Association
Type Concept: This Abies grandis forest occurs in the Ochoco and Blue mountains of northeastern Oregon, and is distinctive because of the lack a shrub layer. Average elevation is 1710 m (5600 feet). North aspects are typical and slope steepness is highly variable. Soils include sandy loam, fine loamy sand, silt loam, and silt over igneous parent material and a mantle of ash. Abies grandis generally dominates the tree layer with cover ranging 7-85% and averaging about 50%. Other trees include Pseudotsuga menziesii and Larix occidentalis with cover of 0-25% and 0-20%, respectively. Shrub cover is insignificant. The herbaceous layer is dominated by graminoid cover of Bromus vulgaris and Carex geyeri. Other herbaceous species include Mitella stauropetala, Galium triflorum, and Osmorhiza berteroi. Understory taxa are similar to ~Abies grandis / Acer glabrum Forest (CEGL000267)$$, except for the absence of Acer glabrum and no shrub layer to speak of.
Diagnostic Characteristics: No Data Available
Rationale for Nominal Species or Physiognomic Features: No Data Available
Classification Comments: This association is referred to by Hall (1973) as "white fir - twinflower - forb" (Abies concolor - Linnaea borealis - forb).
Similar NVC Types: No Data Available
note: No Data Available
Physiognomy and Structure: No Data Available
Floristics: Abies grandis generally dominates the tree layer with cover ranging 7-85% and averaging about 50%. Other trees include Pseudotsuga menziesii and Larix occidentalis with cover of 0-25% and 0-20%, respectively. Shrub cover is insignificant. The herbaceous layer is dominated by graminoid cover of Bromus vulgaris (15-24%) and Carex geyeri (1-6%). Cover of other herbaceous species includes Mitella stauropetala (2-7%), Galium triflorum (1-12%), and Osmorhiza berteroi (= Osmorhiza chilensis) (1-8%). Understory taxa are similar to ~Abies grandis / Acer glabrum Forest (CEGL000267)$$, except for the absence of Acer glabrum and no shrub layer to speak of.
Dynamics: No Data Available
Environmental Description: Average elevation is 1710 m (5600 feet). North aspects are typical and slope steepness is highly variable. Soils include sandy loam, fine loamy sand, silt loam, and silt over igneous parent material and a mantle of ash.
Geographic Range: This forest occurs in the Ochoco and Blue mountains of northeastern Oregon,
Nations: US
States/Provinces: OR
Plot Analysis Summary:
http://vegbank.org/natureserve/ELEMENT_GLOBAL.2.688931
Confidence Level: Low
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.3 Western Hemlock - Grand Fir - Western Larch Mesic Lower Montane Forest Macrogroup | M500 | 1.B.2.Nb.3 |
| Group | 1.B.2.Nb.3.a Grand Fir - Douglas-fir - Western Larch Central Rocky Mountain Forest Group | G211 | 1.B.2.Nb.3.a |
| Alliance | A3362 Grand Fir - Douglas-fir Central Rocky Mountain Forest & Woodland Alliance | A3362 | 1.B.2.Nb.3.a |
| Association | CEGL002601 Grand Fir / Columbia Brome Forest | CEGL002601 | 1.B.2.Nb.3.a |
Concept Lineage: No Data Available
Predecessors: No Data Available
Obsolete Names: No Data Available
Obsolete Parents: No Data Available
Synonomy: = Abies grandis / Bromus vulgaris Plant Association (Johnson and Clausnitzer 1992)
? White fir - twinflower - forb (Abies concolor - Linnaea borealis - forb) (Hall 1973)
? White fir - twinflower - forb (Abies concolor - Linnaea borealis - forb) (Hall 1973)
- 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.
- Hall, F. C. 1973. Plant communities of the Blue Mountains in eastern Oregon and southeastern Washington. R6 Area Guide 3-1. USDA Forest Service, Pacific Northwest Region, Portland, OR. 62 pp.
- 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.
- Western Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Boulder, CO.