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CEGL000191 Pinus ponderosa - Populus tremuloides / Carex spp. - (Poa spp.) Riparian Forest
Type Concept Sentence: No Data Available
Common (Translated Scientific) Name: Ponderosa Pine - Quaking Aspen / Sedge species - (Bluegrass species) Riparian Forest
Colloquial Name: No Data Available
Hierarchy Level: Association
Type Concept: This is a high-elevation ponderosa pine association found in the eastern Cascades of southern Oregon and the mountains of south-central Oregon between 1680 and 2105 m (5500-6900 feet) elevation. This is an open forest association with large Pinus ponderosa and Populus tremuloides trees and an open understory. In the tree understory Juniperus occidentalis is common, with occasional Pinus contorta var. latifolia and Abies lowiana. Shrubs occur at low cover, the most common shrubs include Artemisia tridentata ssp. vaseyana, Amelanchier alnifolia, Symphoricarpos mollis, Mahonia aquifolium, and Ribes cereum. The herbaceous layer is dominated by Poa nervosa, Achillea millefolium, Elymus elymoides, Festuca idahoensis, and Fragaria virginiana. Stands occur on all aspects and on gentle slopes (2-20%). This association supports lush vegetation adjacent to streambanks in bottoms with internal drainage. The soil surface is wet in spring and early summer, and the water table is near or at the surface year-round.
Diagnostic Characteristics: No Data Available
Rationale for Nominal Species or Physiognomic Features: No Data Available
Classification Comments: This association needs crosswalking between states. It is described from Oregon but may occur elsewhere.
Similar NVC Types: No Data Available
note: No Data Available
Physiognomy and Structure: No Data Available
Floristics: This is an open forest association with large Pinus ponderosa and Populus tremuloides trees and an open understory. In the tree understory Juniperus occidentalis is common, with occasional Pinus contorta var. latifolia and Abies lowiana (= Abies concolor var. lowiana). Shrubs occur at low cover, the most common shrubs include Artemisia tridentata ssp. vaseyana, Amelanchier alnifolia, Symphoricarpos mollis, Mahonia aquifolium (= Berberis aquifolium), and Ribes cereum. The herbaceous layer is dominated by Poa nervosa, Achillea millefolium, Elymus elymoides, Festuca idahoensis, and Fragaria virginiana.
Dynamics: No Data Available
Environmental Description: This is a high-elevation ponderosa pine association found in the eastern Cascades of southern Oregon and the mountains of south-central Oregon between 1680 and 2105 m (5500-6900 feet) elevation. Stands occur on all aspects and on gentle slopes (2-20%). This association supports lush vegetation adjacent to streambanks in bottoms with internal drainage. The soil surface is wet in spring and early summer, and the water table is near or at the surface year-round.
Geographic Range: This association is found in the eastern Cascades of southern Oregon and the mountains of south-central Oregon. It is restricted by the need for high water tables at high elevations. Because this is a riparian zone association it has always been somewhat limited in extent.
Nations: US
States/Provinces: OR
Plot Analysis Summary:
http://vegbank.org/natureserve/ELEMENT_GLOBAL.2.690091
Confidence Level: Low - Poorly Documented
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.3 Temperate Flooded & Swamp Forest Formation | F026 | 1.B.3 |
| Division | 1.B.3.Nc Rocky Mountain-Great Basin Montane Flooded & Swamp Forest Division | D195 | 1.B.3.Nc |
| Macrogroup | 1.B.3.Nc.1 Engelmann Spruce - Narrowleaf Cottonwood / Red-osier Dogwood Riparian & Swamp Forest Macrogroup | M034 | 1.B.3.Nc.1 |
| Group | 1.B.3.Nc.1.a Engelmann Spruce - Blue Spruce - Narrowleaf Cottonwood Riparian & Swamp Forest Group | G506 | 1.B.3.Nc.1.a |
| Alliance | A3760 Quaking Aspen Riparian Forest Alliance | A3760 | 1.B.3.Nc.1.a |
| Association | CEGL000191 Ponderosa Pine - Quaking Aspen / Sedge species - (Bluegrass species) Riparian Forest | CEGL000191 | 1.B.3.Nc.1.a |
Concept Lineage: No Data Available
Predecessors: No Data Available
Obsolete Names: No Data Available
Obsolete Parents: No Data Available
Synonomy: No Data Available
- 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.
- Hopkins, W. E. 1979a. Plant associations of the Fremont National Forest. Technical Report R6-ECOL-79-004. USDA Forest Service, Pacific Northwest Region, Portland.
- 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.
- Kovalchik, B. L. 1987. Riparian zone associations - Deschutes, Ochoco, Fremont, and Winema national forests. Technical Paper 279-87. USDA Forest Service, Pacific Northwest Region, Portland, OR. 171 pp.
- Western Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Boulder, CO.