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CEGL007305 Tsuga heterophylla - (Pseudotsuga menziesii) / Tiarella trifoliata - Gymnocarpium dryopteris Forest
Type Concept Sentence: No Data Available
Common (Translated Scientific) Name: Western Hemlock - (Douglas-fir) / Threeleaf Foamflower - Western Oakfern Forest
Colloquial Name: No Data Available
Hierarchy Level: Association
Type Concept: The canopy is usually dominated by Tsuga heterophylla and Pseudotsuga menziesii, although the latter can be absent. Thuja plicata is usually prominent to codominant, and Abies grandis is often present to prominent. The shrub layer is poorly developed and usually has small amounts of Acer circinatum, Oplopanax horridus, and Vaccinium parvifolium. The herb layer tends to be well-developed and usually includes Tiarella trifoliata, Gymnocarpium dryopteris, Blechnum spicant, Linnaea borealis, Polystichum munitum (low percent cover), Athyrium filix-femina, and Cornus unalaschkensis. Tiarella trifoliata and Gymnocarpium dryopteris each occupy over 1% cover. This association occurs in the western Cascades and Olympic Mountains. It is found from low to middle elevations on valley bottoms, riverine terraces and floodplains, as well as on gentle toe slopes. Soils are typically subirrigated. This association occurs within a narrow environmental range in western Washington and has been impacted by logging.
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: No Data Available
Dynamics: No Data Available
Environmental Description: No Data Available
Geographic Range: No Data Available
Nations: US
States/Provinces: WA
Plot Analysis Summary:
http://vegbank.org/natureserve/ELEMENT_GLOBAL.2.979451
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.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.c Grand Fir - Douglas-fir East Cascades Forest Group | G212 | 1.B.2.Nb.3.c |
| Alliance | A3582 Western Hemlock - Grand Fir Cascadian Mesic Cove Forest Alliance | A3582 | 1.B.2.Nb.3.c |
| Association | CEGL007305 Western Hemlock - (Douglas-fir) / Threeleaf Foamflower - Western Oakfern Forest | CEGL007305 | 1.B.2.Nb.3.c |
Concept Lineage: No Data Available
Predecessors: No Data Available
Obsolete Names: No Data Available
Obsolete Parents: No Data Available
Synonomy: ? Tsuga heterophylla / Tiarella trifoliata (Topik et al. 1986)
= Tsuga heterophylla-(Pseudotsuga menziesii)/Tiarella trifoliata-Gymnocarpium dryopteris (Meidinger et al. 2005) [PNWCOAST_256]
= Tsuga heterophylla-(Pseudotsuga menziesii)/Tiarella trifoliata-Gymnocarpium dryopteris Forest (Crawford et al. 2009) [PNWCOAST_256]
= Tsuga heterophylla/Tiarella trifoliata-Gymnocarpium dryopteris Association (Henderson et al. 1992)
= Tsuga heterophylla-(Pseudotsuga menziesii)/Tiarella trifoliata-Gymnocarpium dryopteris (Meidinger et al. 2005) [PNWCOAST_256]
= Tsuga heterophylla-(Pseudotsuga menziesii)/Tiarella trifoliata-Gymnocarpium dryopteris Forest (Crawford et al. 2009) [PNWCOAST_256]
= Tsuga heterophylla/Tiarella trifoliata-Gymnocarpium dryopteris Association (Henderson et al. 1992)
- Crawford, R. C., C. B. Chappell, C. C. Thompson, and F. J. Rocchio. 2009. Vegetation classification of Mount Rainier, North Cascades, and Olympic national parks. Plant association descriptions and identification keys: Appendices A-G. Natural Resource Technical Report NPS/NCCN/NRTR--2009/D-586. National Park Service, Fort Collins, CO. 586 pp.
- Henderson, J. A., D. A. Peter, R. Lesher, and D. C. Shaw. 1992. Field guide to forested plant associations of the Mt. Baker-Snoqualmie National Forest. Technical Paper R6-ECOL-TP-028-91. USDA Forest Service, Pacific Northwest Region, Portland, OR. 196 pp.
- Meidinger, D., C. Chappell, C. Cadrin, G. Kittel, C. McCain, K. Boggs, J. Kagan, G. Cushon, A. Banner, and T. DeMeo. 2005. International Vegetation Classification of the Pacific Northwest: International correlation of temperate coastal forest plant associations of Oregon, Washington, British Columbia and Alaska. Contributors: B.C. Ministry of Forests, USDA Forest Service, B.C. Conservation Data Centre, Alaska Natural Heritage Program, Washington Natural Heritage Program, and Oregon Natural Heritage Information Center.
- Topik, C., N. M. Halverson, and D. G. Brockway. 1986. Plant associations and management guide for the western hemlock zone. R6-ECOL-230a-1986. USDA Forest Service, Gifford Pinchot National Forest, Pacific Northwest Region, Portland, OR. 137 pp.
- Western Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Boulder, CO.