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CEGL001048 Artemisia tridentata ssp. wyomingensis - Peraphyllum ramosissimum / Festuca idahoensis Shrubland
Type Concept Sentence: No Data Available
Common (Translated Scientific) Name: Wyoming Big Sagebrush - Wild Crabapple / Idaho Fescue Shrubland
Colloquial Name: No Data Available
Hierarchy Level: Association
Type Concept: This type occurs over a wide geographic area in eastern Oregon, but in an extremely narrow band. Most occurrences are small, found in an extensive sea of big sagebrush steppe. It occurs in a narrow band along the southern edge of the Blue and Wallowa Mountains, with most occurrences at the northern end of the Owyhee Uplands and northern Basin and Range sections of the Columbia Plateau ecoregion. All occurrences of this association are on deep, well-drained, silty soils. Bare soil is found only in grazed sites. Ungrazed areas have 10-20% cover of mosses and lichens. Elevation ranges from 915 to 1525 m (3000-5000 feet), with the association found on north-facing slopes at the lower elevations, and south-facing slopes at the higher sites. Most occurrences are flat to gentle slopes, along valley margins or toeslopes. This association is an open, sagebrush steppe habitat, dominated by Artemisia tridentata ssp. wyomingensis, which varies between 20-50% cover. Peraphyllum ramosissimum is always present, but at relatively low cover, ranging from 1-20%. Other shrubs present include occasional Purshia tridentata, Amelanchier alnifolia and Ribes sp. individuals. In degraded areas Ericameria nauseosa, Chrysothamnus viscidiflorus, and Tetradymia canescens occur. Festuca idahoensis provides the majority of the understory vegetation cover, with 10-50% cover, and is found at all sites. Pseudoroegneria spicata, Achnatherum thurberianum, Poa secunda, and Elymus elymoides can all be found. Forbs include Lupinus, Astragalus, Balsamorhiza, and Phlox species.
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: This association is an open, sagebrush steppe habitat, dominated by Artemisia tridentata ssp. wyomingensis, which varies between 20-50% cover. Peraphyllum ramosissimum is always present, but at relatively low cover, ranging from 1-20%. Other shrubs present include occasional Purshia tridentata, Amelanchier alnifolia and Ribes sp. individuals. In degraded areas Ericameria nauseosa (= Chrysothamnus nauseosus), Chrysothamnus viscidiflorus, and Tetradymia canescens occur. Festuca idahoensis provides the majority of the understory vegetation cover, with 10-50% cover, and is found at all sites. Pseudoroegneria spicata, Achnatherum thurberianum (= Stipa thurberiana), Poa secunda, and Elymus elymoides can all be found. Forbs include Lupinus, Astragalus, Balsamorhiza, and Phlox species.
Dynamics: No Data Available
Environmental Description: All occurrences of this association are on deep, well-drained, silty soils. Bare soil is found only in grazed sites. Ungrazed areas have 10-20% cover of mosses and lichens. Elevation ranges from 915 to 1525 m (3000-5000 feet), with the association found on north-facing slopes at the lower elevations, and south-facing slopes at the higher sites. Most occurrences are flat to gentle slopes, along valley margins or toeslopes.
Geographic Range: This type occurs over a wide geographic area in eastern Oregon, but in an extremely narrow band. Most occurrences are small, found in an extensive sea of big sagebrush steppe. It occurs in a narrow band along the southern edge of the Blue and Wallowa Mountains, with most occurrences at the northern end of the Owyhee Uplands and northern Basin and Range sections of the Columbia Plateau ecoregion.
Nations: US
States/Provinces: CA?, OR
Plot Analysis Summary:
http://vegbank.org/natureserve/ELEMENT_GLOBAL.2.689864
Confidence Level: Low - Poorly Documented
Confidence Level Comments: No Data Available
Grank: G2
Greasons: No Data Available
| Type | Name | Database Code | Classification Code |
|---|---|---|---|
| Class | 3 Desert & Semi-Desert Class | C03 | 3 |
| Subclass | 3.B Cool Semi-Desert Scrub & Grassland Subclass | S11 | 3.B |
| Formation | 3.B.1 Cool Semi-Desert Scrub & Grassland Formation | F033 | 3.B.1 |
| Division | 3.B.1.Ne Western North American Cool Semi-Desert Scrub & Grassland Division | D040 | 3.B.1.Ne |
| Macrogroup | 3.B.1.Ne.3 Big Sagebrush - Threetip Sagebrush - Antelope Bitterbrush Steppe & Shrubland Macrogroup | M169 | 3.B.1.Ne.3 |
| Group | 3.B.1.Ne.3.b Basin Big Sagebrush - Threetip Sagebrush - Antelope Bitterbrush Big Sagebrush Steppe & Shrubland Group | G302 | 3.B.1.Ne.3.b |
| Alliance | A3182 Wyoming Big Sagebrush Mesic Steppe & Shrubland Alliance | A3182 | 3.B.1.Ne.3.b |
| Association | CEGL001048 Wyoming Big Sagebrush - Wild Crabapple / Idaho Fescue Shrubland | CEGL001048 | 3.B.1.Ne.3.b |
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.
- 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.
- ORNHP [Oregon Natural Heritage Program]. No date. Unpublished data files. Oregon Natural Heritage Program, The Nature Conservancy, Portland, OR.
- Western Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Boulder, CO.