Print Report
CEGL000087 Pseudotsuga menziesii - Tsuga heterophylla / Notholithocarpus densiflorus - Umbellularia californica Forest
Type Concept Sentence: No Data Available
Common (Translated Scientific) Name: Douglas-fir - Western Hemlock / Tanoak - California Laurel Forest
Colloquial Name: No Data Available
Hierarchy Level: Association
Type Concept: This association of the Siskiyou Mountains grows between 45-595 m of elevation on mostly east-facing slopes. Stands tend to grow on the lower slope positions in deep, moist soils. Pseudotsuga menziesii and Tsuga heterophylla dominate the tree canopy, with Umbellularia californica and Notholithocarpus densiflorus in the subcanopy. The herbaceous layer is dense, with the majority of the cover from Oxalis oregana and Polystichum munitum.
Diagnostic Characteristics: No Data Available
Rationale for Nominal Species or Physiognomic Features: No Data Available
Classification Comments: This association is based on ecological plot data from 15 stands.
Similar NVC Types: No Data Available
note: No Data Available
Physiognomy and Structure: No Data Available
Floristics: Pseudotsuga menziesii and Tsuga heterophylla dominate the tree canopy, with Umbellularia californica and Notholithocarpus densiflorus (= Lithocarpus densiflorus) in the subcanopy. The herbaceous layer is dense, with the majority of the cover from Oxalis oregana and Polystichum munitum.
Dynamics: No Data Available
Environmental Description: This association of the Siskiyou Mountains grows between 45-595 m of elevation on mostly east-facing slopes. Stands tend to grow on the lower slope positions in deep, moist soils.
Geographic Range: This association is only known from the Siskiyou Mountains in southwestern Oregon, and possibly adjacent northern California.
Nations: US
States/Provinces: CA?, OR
Plot Analysis Summary:
http://vegbank.org/natureserve/ELEMENT_GLOBAL.2.684367
Confidence Level: Low - Poorly Documented
Confidence Level Comments: No Data Available
Grank: G3
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.1 Warm Temperate Forest & Woodland Formation | F018 | 1.B.1 |
| Division | 1.B.1.Nc Californian Forest & Woodland Division | D007 | 1.B.1.Nc |
| Macrogroup | 1.B.1.Nc.1 California Live Oak - California Laurel - Western Cypress species Forest & Woodland Macrogroup | M009 | 1.B.1.Nc.1 |
| Group | 1.B.1.Nc.1.c Douglas-fir - Tanoak - Pacific Madrone Forest Group | G208 | 1.B.1.Nc.1.c |
| Alliance | A0106 Douglas-fir - Tanoak Forest Alliance | A0106 | 1.B.1.Nc.1.c |
| Association | CEGL000087 Douglas-fir - Western Hemlock / Tanoak - California Laurel Forest | CEGL000087 | 1.B.1.Nc.1.c |
Concept Lineage: No Data Available
Predecessors: No Data Available
Obsolete Names: No Data Available
Obsolete Parents: No Data Available
Synonomy: No Data Available
- Atzet, T., and D. L. Wheeler. 1984. Preliminary plant associations of the Siskiyou Mountains Province, Siskiyou National Forest. USDA Forest Service, Pacific Northwest Region, Portland, OR.
- 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.
- 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.
- Western Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Boulder, CO.