NVCS

CEGL005515 Abies amabilis - Tsuga heterophylla / Rubus pedatus - Tiarella trifoliata var. unifoliata Forest

Type Concept Sentence: No Data Available

Common (Translated Scientific) Name: Pacific Silver Fir - Western Hemlock / Strawberry-leaf Raspberry - Oneleaf Foamflower Forest

Colloquial Name: No Data Available

Hierarchy Level: Association

Type Concept: This Pacific silver fir - western hemlock forest of Oregon and Washington has a canopy codominated by Abies amabilis and Tsuga heterophylla. Abies procera and Thuja plicata can also be prominent to codominant. Abies amabilis dominates tree regeneration and occupies over 10% total cover. Plots from the east Cascade contain Picea engelmannii in the canopy. A shrub layer is absent to sparse, frequently with Vaccinium alaskaense or Vaccinium parvifolium (the latter sometimes prominent). The diverse herb layer is characterized by Rubus pedatus, Streptopus lanceolatus var. curvipes, Blechnum spicant, and Tiarella trifoliata var. unifoliata, one or more of which is typically prominent. Achlys californica and/or Achlys triphylla is absent or very low in cover. In the western Cascades and rarely in the Olympics, this association occurs at middle elevations on mesic to moist sites, with well-drained soils, mostly on lower slopes.

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: OR, WA

Plot Analysis Summary: http://vegbank.org/natureserve/ELEMENT_GLOBAL.2.942429

Confidence Level: Low - Poorly Documented

Confidence Level Comments: No Data Available

Grank: G3G4

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.3 Western Hemlock - Sitka Spruce - Redwood Rainforest Macrogroup	M024	1.B.2.Nd.3
Group	1.B.2.Nd.3.d Pacific Silver Fir - Western Hemlock Rainforest Group	G241	1.B.2.Nd.3.d
Alliance	A3386 Pacific Silver Fir - Western Hemlock / Sweet After Death Forest Alliance	A3386	1.B.2.Nd.3.d
Association	CEGL005515 Pacific Silver Fir - Western Hemlock / Strawberry-leaf Raspberry - Oneleaf Foamflower Forest	CEGL005515	1.B.2.Nd.3.d

Concept Lineage: No Data Available

Predecessors: No Data Available

Obsolete Names: No Data Available

Obsolete Parents: No Data Available

Synonomy: ? Abies amabilis / Tiarella trifoliata - Streptopus roseus (Henderson et al. 1992)
>< Abies amabilis / Tiarella trifoliata (Brockway and Topik 1984)
>< Abies amabilis / Tiarella trifoliata (Kagan et al. 2004)
= Abies amabilis-Tsuga heterophylla/Rubus pedatus-Tiarella trifoliata var. unifoliata (Meidinger et al. 2005) [PNWCOAST_012]
= Abies amabilis-Tsuga heterophylla/Rubus pedatus-Tiarella trifoliata var. unifoliata Forest (Crawford et al. 2009) [PNWCOAST_012]
>< Pacific Silver Fir / Coolwort Foamflower Association (CF F1-52) ABAM/TIUN (Brockway et al. 1983)
>< Pacific silver fir / coolwort foamflower (ABAM/TIUN) (Hemstrom et al. 1982)

Concept Author(s): Meidinger et al. (2005)

Author of Description: Crawford et al. (2009)

Acknowledgements: No Data Available

Version Date: 05-10-16

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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.