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CEGL000480 Thuja plicata / Taxus brevifolia / Asarum caudatum Forest
Type Concept Sentence: No Data Available
Common (Translated Scientific) Name: Western Red-cedar / Pacific Yew / British Columbia Wild Ginger Forest
Colloquial Name: No Data Available
Hierarchy Level: Association
Type Concept: This plant association occurs within the Pacific maritime-influenced climatic regions of the northern Rocky Mountains in the northern Idaho Batholith and Bitterroot Mountains ecoregional sections, within the Clearwater River sub-basin of Idaho. The association occurs on warm, moist, gentle north- to east-facing slopes at 915-1525 m (3000-5000 feet) elevation. These highly productive sites often support rapidly growing, large-diameter Abies grandis and Pseudotsuga menziesii. Giant Thuja plicata are prominent in mid- to late-seral stands. The association is characterized by the abundance of Taxus brevifolia in the understory tall-shrub or low-tree canopy. Paxistima myrsinites and Lonicera utahensis are often present. Associated herbaceous species include Anemone piperi, Asarum caudatum, Clintonia uniflora, Coptis occidentalis, Goodyera oblongifolia, Maianthemum stellatum, Tiarella trifoliata, Trillium ovatum, and Viola orbiculata.
Diagnostic Characteristics: No Data Available
Rationale for Nominal Species or Physiognomic Features: No Data Available
Classification Comments: The association is classified by Cooper et al. (1987) as a phase of the Thuja plicata / Asarum caudatum plant association. Crawford and Johnson (1985) argue that these stands should be treated as an association (as it is here) rather than a phase of the broader association.
Similar NVC Types: No Data Available
note: No Data Available
Physiognomy and Structure: No Data Available
Floristics: These highly productive sites often support rapidly growing, large-diameter Abies grandis and Pseudotsuga menziesii. Giant Thuja plicata are prominent in mid- to late-seral stands. The association is characterized by the abundance of Taxus brevifolia in the understory tall-shrub or low-tree canopy. Paxistima myrsinites and Lonicera utahensis are often present. Associated herbaceous species include Anemone piperi, Asarum caudatum, Clintonia uniflora, Coptis occidentalis, Goodyera oblongifolia, Maianthemum stellatum (= Smilacina stellata), Tiarella trifoliata, Trillium ovatum, and Viola orbiculata.
Dynamics: No Data Available
Environmental Description: This plant association occurs within the Pacific maritime-influenced climatic regions of the northern Rocky Mountains in the northern Idaho Batholith and Bitterroot Mountains ecoregional sections, within the Clearwater River sub-basin of Idaho. The association occurs on warm, moist, gentle north- to east-facing slopes at 915-1525 m (3000-5000 feet) elevation.
Geographic Range: The association is estimated to occur over an area of approximately 3000 square miles. It is restricted to relatively moist, mesic sites within the Pacific maritime-influenced region of the northern Rocky Mountains of Idaho.
Nations: US
States/Provinces: ID
Plot Analysis Summary:
http://vegbank.org/natureserve/ELEMENT_GLOBAL.2.683297
Confidence Level: Low
Confidence Level Comments: No Data Available
Grank: G2
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.b Western Red-cedar - Western Hemlock Central Rocky Mountain Forest Group | G217 | 1.B.2.Nb.3.b |
| Alliance | A3613 Western Hemlock - Western Red-cedar Warm-Mesic Central Rocky Mountain Forest & Woodland Alliance | A3613 | 1.B.2.Nb.3.b |
| Association | CEGL000480 Western Red-cedar / Pacific Yew / British Columbia Wild Ginger Forest | CEGL000480 | 1.B.2.Nb.3.b |
Concept Lineage: No Data Available
Predecessors: No Data Available
Obsolete Names: No Data Available
Obsolete Parents: No Data Available
Synonomy: ? Thuja plicata / Asarum caudatum Habitat Type (Cooper et al. 1987)
- 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.
- Cooper, S. V., K. E. Neiman, R. Steele, and D. W. Roberts. 1987. Forest habitat types of northern Idaho: A second approximation. General Technical Report INT-236.USDA Forest Service, Intermountain Research Station, Ogden, UT. 135 pp. [reprinted in 1991]
- Crawford, R. C., and F. D. Johnson. 1985. Pacific yew dominance in tall forests, a classification dilemma. Canadian Journal of Botany 63:592-602.
- Western Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Boulder, CO.