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CEGL001678 Pseudoroegneria spicata - Poa secunda Lithosolic Grassland
Type Concept Sentence: No Data Available
Common (Translated Scientific) Name: Bluebunch Wheatgrass - Sandberg Bluegrass Lithosolic Grassland
Colloquial Name: No Data Available
Hierarchy Level: Association
Type Concept: This association is known from sites in the lower Snake River basin and northern Wallowa Mountains. Stands also appear to occur in the upper Hells Canyon region within Idaho. The association is transitional to ridgetop habitats that do not support Pseudoroegneria spicata (Poa secunda - Danthonia unispicata sites) and those that support Festuca idahoensis (e.g., Festuca idahoensis - Koeleria macrantha sites). The association occurs on gentle to moderately steep, south- to southwest-facing convex ridgetops at 1120 to 1585 m (4000-5200 feet) elevation. Shallow soils are derived from basalt bedrock. Pseudoroegneria spicata dominates these scabland bunchgrass stands. Poa secunda is codominant. Principal indicator forbs include Lomatium cous, Erigeron chrysopsidis, Balsamorhiza incana, Sedum lanceolatum, and Sedum stenopetalum.
Diagnostic Characteristics: No Data Available
Rationale for Nominal Species or Physiognomic Features: No Data Available
Classification Comments: Daubenmire (1970) describes the association as a phase of the Agropyron spicatum - Poa secunda habitat type. Johnson and Simon (1987) describe the association as a community type. The community type may represent degraded stands of other (PNV) plant associations.
Similar NVC Types: No Data Available
note: No Data Available
Physiognomy and Structure: No Data Available
Floristics: Pseudoroegneria spicata dominates these scabland bunchgrass stands. Poa secunda is codominant. Principal indicator forbs include Lomatium cous, Erigeron chrysopsidis, Balsamorhiza incana, Sedum lanceolatum, and Sedum stenopetalum.
Dynamics: No Data Available
Environmental Description: The association is transitional to ridgetop habitats that do not support Pseudoroegneria spicata (Poa secunda - Danthonia unispicata sites) and those that support Festuca idahoensis (e.g., Festuca idahoensis - Koeleria macrantha sites). The association occurs on gentle to moderately steep, south- to southwest-facing convex ridgetops at 1120 to 1585 m (4000-5200 feet) elevation. Shallow soils are derived from basalt bedrock.
Geographic Range: The association is reported from sites in the lower Snake River basin, northern Wallowa Mountains, and upper Hells Canyon regions within the Blue Mountains ecoregional section. Very small (<5 acres) stands of the association are dispersed unevenly throughout its range.
Nations: US
States/Provinces: ID, OR, WA
Plot Analysis Summary:
http://vegbank.org/natureserve/ELEMENT_GLOBAL.2.686456
Confidence Level: Low
Confidence Level Comments: No Data Available
Grank: G3
Greasons: No Data Available
| Type | Name | Database Code | Classification Code |
|---|---|---|---|
| Class | 2 Shrub & Herb Vegetation Class | C02 | 2 |
| Subclass | 2.B Temperate & Boreal Grassland & Shrubland Subclass | S18 | 2.B |
| Formation | 2.B.2 Temperate Grassland & Shrubland Formation | F012 | 2.B.2 |
| Division | 2.B.2.Nf Western North American Grassland & Shrubland Division | D022 | 2.B.2.Nf |
| Macrogroup | 2.B.2.Nf.2 Saskatoon Serviceberry / Idaho Fescue - Bluebunch Wheatgrass Grassland & Shrubland Macrogroup | M048 | 2.B.2.Nf.2 |
| Group | 2.B.2.Nf.2.c Rough Fescue - Idaho Fescue - Bluebunch Wheatgrass Central Rocky Mountain Foothill Grassland Group | G273 | 2.B.2.Nf.2.c |
| Alliance | A3987 Idaho Fescue - Bluebunch Wheatgrass - Sandberg Bluegrass Dry Grassland Alliance | A3987 | 2.B.2.Nf.2.c |
| Association | CEGL001678 Bluebunch Wheatgrass - Sandberg Bluegrass Lithosolic Grassland | CEGL001678 | 2.B.2.Nf.2.c |
Concept Lineage: No Data Available
Predecessors: No Data Available
Obsolete Names: No Data Available
Obsolete Parents: No Data Available
Synonomy: = Agropyron spicatum - Poa sandbergii (basalt) Plant Association (Johnson and Simon 1987)
< Agropyron spicatum - Poa sandbergii Plant Association (Johnson and Clausnitzer 1992)
? Agropyron spicatum - Poa sandbergii Scabland Plant Association (Johnson and Simon 1987)
< Agropyron spicatum - Poa secunda Zone (Poulton 1955)
< Agropyron spicatum - Poa secunda habitat type (Daubenmire 1970)
< Agropyron spicatum Series (Tisdale 1986)
< Bunchgrass on shallow soil, gentle slopes GB-49-11 (Hall 1973)
< Agropyron spicatum - Poa sandbergii Plant Association (Johnson and Clausnitzer 1992)
? Agropyron spicatum - Poa sandbergii Scabland Plant Association (Johnson and Simon 1987)
< Agropyron spicatum - Poa secunda Zone (Poulton 1955)
< Agropyron spicatum - Poa secunda habitat type (Daubenmire 1970)
< Agropyron spicatum Series (Tisdale 1986)
< Bunchgrass on shallow soil, gentle slopes GB-49-11 (Hall 1973)
- 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.
- Daubenmire, R. F. 1970. Steppe vegetation of Washington. Washington State University Agricultural Experiment Station Technical Bulletin No. 62. 131 pp.
- Hall, F. C. 1973. Plant communities of the Blue Mountains in eastern Oregon and southeastern Washington. R6 Area Guide 3-1. USDA Forest Service, Pacific Northwest Region, Portland, OR. 62 pp.
- Johnson, C. G., Jr., and S. A. Simon. 1987. Plant associations of the Wallowa-Snake Province Wallowa-Whitman National Forest. Technical Paper R6-ECOL-TP-255A-86. USDA Forest Service, Pacific Northwest Region, Wallowa-Whitman National Forest. 399 pp. plus appendices.
- Johnson, C. G., and R. R. Clausnitzer. 1992. Plant associations of the Blue and Ochoco mountains. R6-ERW-TP-036-92. USDA Forest Service, Pacific Northwest Region, Wallowa-Whitman National Forest. 163 pp. plus appendices.
- Johnson, C. G., and S. A. Simon. 1985. Plant associations of the Wallowa Valley Ranger District, Part II: Steppe. USDA Forest Service, Pacific Northwest Region, Wallowa-Whitman National Forest. 258 pp.
- 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.
- Poulton, C. E. 1955. Ecology of the non-forested vegetation in Umatilla and Morrow counties, Oregon. Unpublished dissertation. State College of Washington, Pullman. 166 pp.
- Tisdale, E. W. 1986. Canyon grasslands and associated shrublands of west-central Idaho and adjacent areas. Bulletin No. 40. Forest, Wildlife and Range Experiment Station, University of Idaho, Moscow. 42 pp.
- WNHP [Washington Natural Heritage Program]. 2018. Unpublished data files. Washington Natural Heritage Program, Department of Natural Resources, Olympia, WA.
- Western Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Boulder, CO.