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CEGL000209 Pinus ponderosa - Pseudotsuga menziesii / Arctostaphylos patula Woodland
Type Concept Sentence: No Data Available
Common (Translated Scientific) Name: Ponderosa Pine - Douglas-fir / Greenleaf Manzanita Woodland
Colloquial Name: No Data Available
Hierarchy Level: Association
Type Concept: This association grows on southeastern to western aspects in the Siskiyou Mountains between 1350-1645 m of elevation. Stands are found on moderate to steep slopes, from midslope to ridgetops. Soils are metavolcanics, schists, granodiorite and peridotite. Pinus ponderosa and Pseudotsuga menziesii are the dominant trees in the overstory with average covers of 35% and 16%, respectively. Pinus lambertiana and Calocedrus decurrens are also present but at lower cover values. The shrub layer averages 65% total cover, with Arctostaphylos nevadensis being the most constant. Arctostaphylos patula occurs near or within stands of this type. Forb and grass cover totals 40%.
Diagnostic Characteristics: No Data Available
Rationale for Nominal Species or Physiognomic Features: No Data Available
Classification Comments: Arctostaphylos patula is used to differentiate stands of this type from a slightly warmer and drier type, ~Pinus ponderosa / Arctostaphylos patula - Arctostaphylos viscida Forest (CEGL000061)$$.
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: This association is only known from the Siskiyou mountains of Oregon, and possibly occurs in adjacent California.
Nations: US
States/Provinces: CA?, OR
Plot Analysis Summary:
http://vegbank.org/natureserve/ELEMENT_GLOBAL.2.687016
Confidence Level: Low
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.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.2 Incense-cedar - Jeffrey Pine - Sierra White Fir Forest Macrogroup | M023 | 1.B.2.Nd.2 |
| Group | 1.B.2.Nd.2.a Incense-cedar - Sugar Pine - Sierra White Fir Forest & Woodland Group | G344 | 1.B.2.Nd.2.a |
| Alliance | A3673 Ponderosa Pine - Incense-cedar - Douglas-fir Forest Alliance | A3673 | 1.B.2.Nd.2.a |
| Association | CEGL000209 Ponderosa Pine - Douglas-fir / Greenleaf Manzanita Woodland | CEGL000209 | 1.B.2.Nd.2.a |
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.