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CEGL000274 Abies grandis / Holodiscus discolor Forest
Type Concept Sentence: No Data Available
Common (Translated Scientific) Name: Grand Fir / Oceanspray Forest
Colloquial Name: No Data Available
Hierarchy Level: Association
Type Concept: This is an evergreen conifer forest association restricted to the eastern Cascades near the Columbia River Gorge. These are mostly snow-free sites generally found on exposed, south-facing slopes or ridgetops between 760 and 1220 m (2500-4000 feet) elevation. The name of the type reflects its potential vegetation. The existing vegetation is dominated by Pseudotsuga menziesii often with Abies grandis in the main canopy. Pinus ponderosa can be important in some stands, and Quercus garryana and Larix occidentalis can be present. The tree canopy is mostly open and could be considered a woodland in some stands. The undergrowth is characterized by a mid to tall-shrub layer. Holodiscus discolor and Rosa gymnocarpa shrubs are always present and often with high cover. Symphoricarpos mollis, Corylus cornuta and Acer circinatum shrubs are present and sometimes abundant. The herbaceous layer is patchy and dominated by forbs, primarily Trientalis borealis ssp. latifolia, Moehringia macrophylla, or Achlys triphylla.
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 existing vegetation is dominated by Pseudotsuga menziesii often with Abies grandis in the main canopy. Pinus ponderosa can be important in some stands, and Quercus garryana and Larix occidentalis can be present. The tree canopy is mostly open and could be considered a woodland in some stands. The undergrowth is characterized by a mid to tall-shrub layer. Holodiscus discolor and Rosa gymnocarpa shrubs are always present and often with high cover. Symphoricarpos mollis, Corylus cornuta and Acer circinatum shrubs are present and sometimes abundant. The herbaceous layer is patchy and dominated by forbs, primarily Trientalis borealis ssp. latifolia (= Trientalis latifolia), Moehringia macrophylla (= Arenaria macrophylla), or Achlys triphylla.
Dynamics: No Data Available
Environmental Description: Stands occur on mostly snow-free sites generally found on exposed, south-facing slopes or ridgetops between 760 and 1220 m (2500-4000 feet) elevation.
Geographic Range: It is restricted to the Grand Fir Zone in and around the Columbia River Gorge.
Nations: US
States/Provinces: OR, WA
Plot Analysis Summary:
http://vegbank.org/natureserve/ELEMENT_GLOBAL.2.683320
Confidence Level: Low
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 | A3583 Grand Fir - Douglas-fir Mesic Cascadian Forest Alliance | A3583 | 1.B.2.Nb.3.c |
| Association | CEGL000274 Grand Fir / Oceanspray Forest | CEGL000274 | 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: = Abies grandis / Holodiscus discolor (Topik et al. 1988) [(p.75)]
= Abies grandis / Holodiscus discolor (Topik 1989)
= Abies grandis / Holodiscus discolor (Topik 1989)
- 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., K. Neiman, and R. Steele. 1985. Forest habitat types of northern Idaho. Editorial draft. Unpublished report prepared for USDA Forest Service, Intermountain Forest and Range Experiment Station, and Region One, Missoula, MT. 295 pp.
- Johnson, C. G., Jr., and S. A. Simon. 1987. Plant associations of the Wallowa-Snake Province Wallowa-Whitman National Forest. Technical Paper R6-ECOL-TP-255A-86. USDA Forest Service, Pacific Northwest Region, Wallowa-Whitman National Forest. 399 pp. plus appendices.
- Kagan, J. S., J. A. Christy, M. P. Murray, and J. A. Titus. 2004. Classification of native vegetation of Oregon. January 2004. Oregon Natural Heritage Information Center, Portland. 52 pp.
- Steele, R., R. D. Pfister, R. A. Ryker, and J. A. Kittams. 1981. Forest habitat types of central Idaho. General Technical Report INT-114. USDA Forest Service, Intermountain Forest and Range Experiment Station, Ogden, UT. 138 pp.
- Topik, C. 1989. Plant associations and management guide for the Abies grandis zone Gifford Pinchot National Forest. R6-ECOL-TP-006-88. USDA Forest Service, Pacific Northwest Region, Portland, OR. 110 pp.
- Topik, C., N. M. Halverson, and T. High. 1988. Plant associations and management guide of the ponderosa pine, Douglas-fir, and grand fir zone, Mt. Hood National Forest. R6-ECOL-TP-004-88. USDA Forest Service, Pacific Northwest Region, Portland, OR. 136 pp.
- 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.
- Williams, C. K., and T. R. Lillybridge. 1985. Forested plant associations of the Colville National Forest. Draft. Unpublished field guide prepared for USDA Forest Service.