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CEGL001785 Eriogonum douglasii / Poa secunda Dwarf-shrub Grassland
Type Concept Sentence: No Data Available
Common (Translated Scientific) Name: Douglas'' Buckwheat / Sandberg Bluegrass Dwarf-shrub Grassland
Colloquial Name: No Data Available
Hierarchy Level: Association
Type Concept: This scabland association is characterized by cespitose, drought-resistant plants. Stands are documented from Hells Canyon in Oregon and Idaho, and south-central Washington. Sites are typically ridgetops and plateaus at elevations of 950-1525 m (3100-5000 feet), and occur on a variety of aspects with slopes less than 13%. Soils are typically silt loams or loams with gravel that increases in size to boulders lower in the stratum. Bedrock is typically basalt. Vegetation cover is dominated by Eriogonum douglasii and Poa secunda. Other associated species include Elymus elymoides ssp. elymoides, Sedum spp., Lomatium cous, Viola trinervata, and Arabis holboellii. There is typically 15-40% cover of surface rock (gravel).
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: Vegetation cover is dominated by Eriogonum douglasii (6-40%) and Poa secunda (10-25%). Cover of other associated species include Elymus elymoides ssp. elymoides (0-3%), Sedum spp. (0-3%), Lomatium cous (0-5%), Viola trinervata (0-7%), and Arabis holboellii (0-3%). There is typically 15-40% cover of surface rock (gravel).
Dynamics: No Data Available
Environmental Description: Sites are typically ridgetops and plateaus at elevations of 950-1525 m (3100-5000 feet), and occur on a variety of aspects with slopes less than 13%. Soils are typically silt loams or loams with 35% gravel that increases in size to boulders lower in the stratum. Bedrock is typically basalt.
Geographic Range: This association occurs in Washington''s Klickitat and Yakima counties and Hells Canyon region of Oregon and Idaho. Stands may also occur in California.
Nations: US
States/Provinces: ID, OR, WA
Plot Analysis Summary:
http://vegbank.org/natureserve/ELEMENT_GLOBAL.2.687163
Confidence Level: Low
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.2 Little Sagebrush - Black Sagebrush - Scabland Sagebrush Steppe & Shrubland Macrogroup | M170 | 3.B.1.Ne.2 |
| Group | 3.B.1.Ne.2.a Scabland Sagebrush - Buckwheat species Dwarf-shrubland & Steppe Group | G307 | 3.B.1.Ne.2.a |
| Alliance | A1568 Buckwheat species / Sandberg Bluegrass Dwarf-shrub Steppe Alliance | A1568 | 3.B.1.Ne.2.a |
| Association | CEGL001785 Douglas'' Buckwheat / Sandberg Bluegrass Dwarf-shrub Grassland | CEGL001785 | 3.B.1.Ne.2.a |
Concept Lineage: No Data Available
Predecessors: No Data Available
Obsolete Names: No Data Available
Obsolete Parents: No Data Available
Synonomy: = Eriogonum douglasii - Poa secunda Habitat Type (Daubenmire 1970)
= Eriogonum douglasii / Poa sandbergii Plant Association (Johnson and Simon 1987)
= Eriogonum douglasii / Poa sandbergii Plant Association (Johnson and Simon 1987)
- 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.
- 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.
- 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.
- 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.