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CEGL008622 Pinus monticola / Achnatherum occidentale Woodland
Type Concept Sentence: No Data Available
Common (Translated Scientific) Name: Western White Pine / Western Needlegrass Forest
Colloquial Name: No Data Available
Hierarchy Level: Association
Type Concept: This forest association is currently only known from Yosemite National Park in California, and the following description is based on occurrences there. Additional information will be added as it becomes available. In Yosemite and environs, this association occurs between 2350 to 3080 m (7700-10,100 feet) in elevation, primarily on somewhat gentle to moderate slopes, often near or partially on the tops of ridges. Aspects are northwest, west, southwest, and south. Soils are derived from granite. Textures are sand or sandy loam. Large rock/boulder cover may reach 27% of the stand, but bare soil also may reach 75%. Sites are upland. This association consists of an open tree canopy dominated by Pinus monticola, which averages 15% cover. Abies magnifica and Pinus contorta var. murrayana may also be present but in small numbers. The shrub layer is essentially nonexistent. The herb layer averages 10% cover, with the most frequent species being Elymus elymoides and Achnatherum occidentale. Other herb species that may be present include Arabis platysperma and Eriogonum incanum.
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: No Data Available
Dynamics: No Data Available
Environmental Description: No Data Available
Geographic Range: This association has only been described from Yosemite National Park in California. Information about its global characteristics is not available without additional inventory
Nations: US
States/Provinces: CA
Plot Analysis Summary:
http://vegbank.org/natureserve/ELEMENT_GLOBAL.2.685087
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.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.4 California Red Fir - Mountain Hemlock - Sierra Lodgepole Pine Forest Macrogroup | M025 | 1.B.2.Nd.4 |
| Group | 1.B.2.Nd.4.a California Red Fir - Shasta Red Fir - Mountain Hemlock Forest Group | G749 | 1.B.2.Nd.4.a |
| Alliance | A3620 Mountain Hemlock - Sierra Lodgepole Pine Sierran Forest Alliance | A3620 | 1.B.2.Nd.4.a |
| Association | CEGL008622 Western White Pine / Western Needlegrass Forest | CEGL008622 | 1.B.2.Nd.4.a |
Concept Lineage: No Data Available
Predecessors: No Data Available
Obsolete Names: No Data Available
Obsolete Parents: No Data Available
Synonomy: = Pinus monticola - Pinus contorta var. murrayana/Achnatherum occidentale Forest [Provisional] (Keeler-Wolf et al. 2012)
= Pinus monticola / Achnatherum occidentalis (Sawyer et al. 2009) [87.170.06]
= Pinus monticola / Achnatherum occidentalis (Sawyer et al. 2009) [87.170.06]
- Keeler-Wolf, T., M. Schindel, S. San, P. Moore, and D. Hickson. 2003a. Classification of the vegetation of Yosemite National Park and surrounding environs in Tuolumne, Mariposa, Madera and Mono counties, California. Unpublished report by NatureServe in cooperation with the California Native Plant Society and California Department of Fish and Game, Wildlife and Habitat Data Analysis Branch, Sacramento, CA.
- Keeler-Wolf, T., P. E. Moore, E. T. Reyes, J. M. Menke, D. N. Johnson, and D. L. Karavidas. 2012. Yosemite National Park vegetation classification and mapping project report. Natural Resource Technical Report NPS/YOSE/NRTR--2012/598. National Park Service, Fort Collins, CO.
- Sawyer, J. O., T. Keeler-Wolf, and J. Evens. 2009. A manual of California vegetation. Second edition. California Native Plant Society, Sacramento CA. 1300 pp.
- Western Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Boulder, CO.