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CEGL000818 Bothriochloa pertusa Polynesian Ruderal Grassland
Type Concept Sentence: No Data Available
Common (Translated Scientific) Name: Pitted Beardgrass Polynesian Ruderal Grassland
Colloquial Name: No Data Available
Hierarchy Level: Association
Type Concept: This woodland has diverse tree species with highly variable heights and diameters within stands, but is usually underlain by a sparse understory. It thrives on a high variety of habitats in the Klamath-Siskiyou region of Oregon and may also occur in California. Elevation ranges from 680-1870 m (2220-6140 feet). Sites are found on slopes of 1-51% on all aspects. Soils are typically ultrabasic with 46% cover of rocks. The multi-layer tree canopy is dominated by Pinus jeffreyi with an average of 19% cover. Other overstory trees include Pinus monticola (4%), Calocedrus decurrens (5%), and Pseudotsuga menziesii (44%). Understory trees are Pinus jeffreyi (17%), Pinus monticola (9%), Pseudotsuga menziesii (6%), and Chamaecyparis lawsoniana (3%). Arctostaphylos nevadensis occupies 17% of the understory. Sites show little evidence of fire.
Diagnostic Characteristics: No Data Available
Rationale for Nominal Species or Physiognomic Features: No Data Available
Classification Comments: Atzet and Wheeler (1984) classified this as Pinus jeffreyi - Pinus monticola.
Similar NVC Types: No Data Available
note: No Data Available
Physiognomy and Structure: No Data Available
Floristics: This woodland has diverse tree species with highly variable heights and diameters within stands, but is usually underlain by a sparse understory. The multi-layer tree canopy is dominated by Pinus jeffreyi with an average of 19% cover. Other overstory trees include Pinus monticola (4%), Calocedrus decurrens (5%), and Pseudotsuga menziesii (44%). Understory trees are Pinus jeffreyi (17%), Pinus monticola (9%), Pseudotsuga menziesii (6%), and Chamaecyparis lawsoniana (3%). Arctostaphylos nevadensis occupies 17% of the understory.
Dynamics: Sites show little evidence of fire.
Environmental Description: This community thrives on a high variety of habitats in the Klamath-Siskiyou region of Oregon and may also occur in California. Elevation ranges from 680-1870 m (2220-6140 feet). Sites are found on slopes of 1-51% on all aspects. Soils are typically ultrabasic with 46% cover of rocks.
Geographic Range: This association is restricted to mid-elevation, serpentine habitats in southwestern Oregon. Stands probably occur in similar habitats in northwestern California.
Nations: US
States/Provinces: CA?, OR
Plot Analysis Summary:
http://vegbank.org/natureserve/ELEMENT_GLOBAL.2.688881
Confidence Level: Moderate
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 | A3676 Jeffrey Pine - Washoe Pine Mixed Conifer Woodland Alliance | A3676 | 1.B.2.Nd.2.a |
| Association | CEGL000818 Pitted Beardgrass Polynesian Ruderal Grassland | CEGL000818 | 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: = Pinus jeffreyi - Pinus monticola (Atzet and Wheeler 1984)
- 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.