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CEGL005519 Abies amabilis - Tsuga mertensiana / Streptopus lanceolatus var. curvipes Forest
Type Concept Sentence: No Data Available
Common (Translated Scientific) Name: Pacific Silver Fir - Mountain Hemlock / Rosy Twisted-stalk Forest
Colloquial Name: No Data Available
Hierarchy Level: Association
Type Concept: This Pacific silver fir - mountain hemlock forest of British Columbia and Washington has a tree canopy that is usually dominated by Abies amabilis, and Tsuga mertensiana is always at least prominent to codominant. Callitropsis nootkatensis, Abies lasiocarpa, Abies procera, and Pseudotsuga menziesii may be prominent. The shrub layer varies from absent to well-developed. Vaccinium alaskaense or Vaccinium membranaceum can be dominant; however, the plots sampled all had sparse shrubs. An herb layer is always present and the characteristic species are Rubus pedatus, Streptopus lanceolatus var. curvipes, and Tiarella trifoliata var. unifoliata. One of the latter two species is always at least prominent in the understory and diagnostic. Tiarella trifoliata is the most common herb with Valeriana sitchensis, Rubus lasiococcus, and Veratrum viride frequent. In the Olympic Mountains and western Cascade Range, this association occurs in upper montane forest zones. Sites are generally moist but can be slightly dry. Many natural-origin stands occur on protected lands; however, some non-protected stands are subject to logging and development.
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 tree canopy is usually dominated by Abies amabilis, and Tsuga mertensiana is always at least prominent to codominant. Callitropsis nootkatensis (= Cupressus nootkatensis), Abies lasiocarpa, Abies procera, and Pseudotsuga menziesii may be prominent. The shrub layer varies from absent to well-developed. Vaccinium alaskaense or Vaccinium membranaceum can be dominant; however, the plots sampled all had sparse shrubs. An herb layer is always present and the characteristic species are Rubus pedatus, Streptopus lanceolatus var. curvipes, and Tiarella trifoliata var. unifoliata. One of the latter two species is always at least prominent in the understory and diagnostic. Tiarella trifoliata is the most common herb with Valeriana sitchensis, Rubus lasiococcus, and Veratrum viride frequent.
Dynamics: No Data Available
Environmental Description: No Data Available
Geographic Range: No Data Available
Nations: CA,US
States/Provinces: BC, WA
Plot Analysis Summary:
http://vegbank.org/natureserve/ELEMENT_GLOBAL.2.942432
Confidence Level: Low - Poorly Documented
Confidence Level Comments: No Data Available
Grank: G4
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.4 California Red Fir - Mountain Hemlock - Sierra Lodgepole Pine Forest Macrogroup | M025 | 1.B.2.Nd.4 |
| Group | 1.B.2.Nd.4.c Mountain Hemlock - Pacific Silver Fir - Alaska-cedar Wood Group | G849 | 1.B.2.Nd.4.c |
| Alliance | A3723 Mountain Hemlock - Pacific Silver Fir Forest & Woodland Alliance | A3723 | 1.B.2.Nd.4.c |
| Association | CEGL005519 Pacific Silver Fir - Mountain Hemlock / Rosy Twisted-stalk Forest | CEGL005519 | 1.B.2.Nd.4.c |
Concept Lineage: No Data Available
Predecessors: No Data Available
Obsolete Names: No Data Available
Obsolete Parents: No Data Available
Synonomy: = Abies amabilis-Tsuga mertensiana/Streptopus lanceolatus var. curvipes (Meidinger et al. 2005) [PNWCOAST_019]
= Abies amabilis-Tsuga mertensiana/Streptopus lanceolatus var. curvipes Forest (Crawford et al. 2009)
> Tsuga mertensiana/Tiarella unifoliata-Streptopus roseus Association (Henderson et al. 1992)
? Tsuga mertensiana/Tiarella unifoliata-Streptopus roseus-NWW (Henderson et al. 1992)
? Tsuga mertensiana/Vaccinium alaskaense-Streptopus roseus Association (Henderson et al. 1992)
? Tsuga mertensiana/Vaccinium alaskaense-Streptopus roseus-NWW (Henderson et al. 1992)
? Tsuga mertensiana/Vaccinium membranaceum-Streptopus roseus Association (Henderson et al. 1992)
? Tsuga mertensiana/Vaccinium membranaceum-Streptopus roseus-NWW (Henderson et al. 1992)
? MH mm 1 /03 (Banner et al. 1993)
? MH mm 1 /05 (Banner et al. 1993)
? MH mm 2 /05 (Banner et al. 1993)
= Abies amabilis-Tsuga mertensiana/Streptopus lanceolatus var. curvipes Forest (Crawford et al. 2009)
> Tsuga mertensiana/Tiarella unifoliata-Streptopus roseus Association (Henderson et al. 1992)
? Tsuga mertensiana/Tiarella unifoliata-Streptopus roseus-NWW (Henderson et al. 1992)
? Tsuga mertensiana/Vaccinium alaskaense-Streptopus roseus Association (Henderson et al. 1992)
? Tsuga mertensiana/Vaccinium alaskaense-Streptopus roseus-NWW (Henderson et al. 1992)
? Tsuga mertensiana/Vaccinium membranaceum-Streptopus roseus Association (Henderson et al. 1992)
? Tsuga mertensiana/Vaccinium membranaceum-Streptopus roseus-NWW (Henderson et al. 1992)
? MH mm 1 /03 (Banner et al. 1993)
? MH mm 1 /05 (Banner et al. 1993)
? MH mm 2 /05 (Banner et al. 1993)
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- 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.