Print Report

CEGL005511 Abies amabilis - Pseudotsuga menziesii / Achlys triphylla Forest

Type Concept Sentence: No Data Available

Common (Translated Scientific) Name: Pacific Silver Fir - Douglas-fir / Sweet After Death Forest

Colloquial Name: No Data Available

Hierarchy Level:  Association

Type Concept: This Pacific silver fir - Douglas-fir forest of Oregon and Washington has a canopy dominated by Pseudotsuga menziesii, Tsuga heterophylla, and/or Abies amabilis. Abies amabilis has over 10% total cover and dominates or codominates tree regeneration. Abies procera is sometimes prominent. The shrub layer varies from sparse to moderate, and when more developed is dominated by Acer circinatum. Mahonia nervosa and Vaccinium membranaceum are often present. The well-developed herb layer is dominated or codominated by Achlys californica and/or Achlys triphylla. Clintonia uniflora, Cornus unalaschkensis, and Linnaea borealis are usually present. At Mount Rainier and in the eastern and northern Olympics, this association occurs at middle elevations. Sites have deep, well-drained soils and are environmentally moderate. Aspects tend to be southerly. 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 canopy is dominated by Pseudotsuga menziesii, Tsuga heterophylla, and/or Abies amabilis. Abies amabilis has over 10% total cover and dominates or codominates tree regeneration. Abies procera is sometimes prominent. The shrub layer varies from sparse to moderate, and when more developed is dominated by Acer circinatum. Mahonia nervosa (= Berberis nervosa) and Vaccinium membranaceum are often present. The well-developed herb layer is dominated or codominated by Achlys californica and/or Achlys triphylla. Clintonia uniflora, Cornus unalaschkensis, and Linnaea borealis are usually present.

Dynamics:  No Data Available
Environmental Description:  At Mount Rainier and in the eastern and northern Olympics, this association occurs at middle elevations. Sites have deep, well-drained soils and are environmentally moderate. Aspects tend to be southerly. Many natural-origin stands occur on protected lands; however, some non-protected stands are subject to logging and development.
Geographic Range: This forest occurs in Oregon and Washington.

Nations: US

States/Provinces:  OR, WA


Confidence Level: Low - Poorly Documented

Confidence Level Comments: No Data Available
Grank: GNR

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 CEGL005511 Pacific Silver Fir - Douglas-fir / Sweet After Death Forest CEGL005511 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 / Acer circinatum (Lillybridge et al. 1995) [ABAM/ACCI ASSOCIATION CFS621]
? Abies amabilis / Acer circinatum-PNW (Lillybridge et al. 1995)
? Abies amabilis / Achlys triphylla - Tiarella unifoliata (Henderson et al. 1989)
? Abies amabilis / Achlys triphylla / Clintonia uniflora (Brockway and Topik 1984)
= Abies amabilis-Pseudotsuga menziesii/Achlys triphylla (Meidinger et al. 2005) [PNWCOAST_006]
= Abies amabilis-Pseudotsuga menziesii/Achlys triphylla Forest (Crawford et al. 2009)
? Abies amabilis/Acer circinatum Association (Kovalchik 2001)
< Abies amabilis/Achlys triphylla Association (Henderson et al. 1992)
< Abies amabilis/Achlys triphylla Community Type (Henderson et al. 1979)
? Abies amabilis/Rosa gymnocarpa/Achlys triphylla-PNW (Atzet et al. 1996)
? Pacific Silver Fir / Vanillaleaf - Queencup Beadlily (CF F2-53) ABAM/ACTR-CLUN (Brockway et al. 1983)
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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