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CEGL001130 Symphoricarpos albus - Rosa nutkana Shrubland

Type Concept Sentence: No Data Available


Common (Translated Scientific) Name: Common Snowberry - Nootka Rose Shrubland

Colloquial Name: No Data Available

Hierarchy Level:  Association

Type Concept: This Symphoricarpos albus plant association is known from canyonlands of the Imnaha River and lower Snake River within northeastern Oregon, southeastern Washington, and west-central Idaho. The association occurs on lower to mid-slope positions of moderately steep to steep, north-facing footslopes below 915 m (3000 feet) elevation. Very deep silt or silt loam soils on these relatively moist sites are formed in loess accumulations over basalt colluvium or bedrock. The plant association is characterized by dense growth of Symphoricarpos albus. Rosa nutkana or Rosa woodsii are usually present. Deciduous shrubs are so abundant that growth of understory forbs and graminoids is limited. Associated understory species may include Festuca idahoensis, Frasera albicaulis, Besseya rubra, Geum triflorum, and Lupinus sericeus. Stands with potential for tree establishment are maintained as shrubland by periodic wildfire. On drier habitats, periodic wildfire will restrict expansion of the association into adjacent bunchgrass-dominated vegetation.

Diagnostic Characteristics: No Data Available

Rationale for Nominal Species or Physiognomic Features: No Data Available

Classification Comments: This association is very similar to ~Symphoricarpos albus Shrubland (CEGL005890)$$ identified in Glacier National Park (Reid et al. 2004). Both types contain Rosa spp. as associated shrubs and appear to be maintained by fire. Further comparison of data for these two types may suggest merging them into one association.

Similar NVC Types: No Data Available
note: No Data Available

Physiognomy and Structure: No Data Available

Floristics: The plant association is characterized by dense growth of Symphoricarpos albus. Rosa nutkana or Rosa woodsii are usually present. Deciduous shrubs are so abundant that growth of understory forbs and graminoids is limited. Associated understory species may include Festuca idahoensis, Frasera albicaulis, Besseya rubra, Geum triflorum, and Lupinus sericeus.

Dynamics:  Stands with potential for tree establishment are maintained as shrubland by periodic wildfire. On drier habitats, periodic wildfire will restrict expansion of the association into adjacent bunchgrass-dominated vegetation.

Environmental Description:  The association occurs on lower to mid-slope positions of moderately steep to steep, north-facing footslopes below 915 m (3000 feet) elevation. Very deep silt or silt loam soils on these relatively moist sites are formed in loess accumulations over basalt colluvium or bedrock.

Geographic Range: This shrubland occurs in northeastern Oregon, southeastern Washington, and west-central Idaho.

Nations: US

States/Provinces:  ID, OR, WA




Confidence Level: Low

Confidence Level Comments: No Data Available

Grank: G3

Greasons: No Data Available


Concept Lineage: No Data Available

Predecessors: No Data Available

Obsolete Names: No Data Available

Obsolete Parents: No Data Available

Synonomy: >< Festuca idahoensis / Rosa nutkana, Rosa nutkana Phase (Daubenmire 1970)
>< Festuca idahoensis / Symphoricarpos albus, Symphoricarpos albus Phase (Daubenmire 1970)
= Symphoricarpos albus - Rosa sp. Plant Association (Johnson and Simon 1987)
< Symphoricarpos albus Series (Tisdale 1986)

Concept Author(s): Western Ecology Group

Author of Description: S. Rust and M.S. Reid

Acknowledgements: No Data Available

Version Date: 09-28-04

  • 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.
  • Reid, M. S., S. V. Cooper, and G. Kittel. 2004. Vegetation classification of Waterton-Glacier International Peace Park. Final report for USGS-NPS Vegetation Mapping Program, International Peace Park Mapping Project. NatureServe, Arlington VA.
  • Tisdale, E. W. 1979. A preliminary classification of Snake River Canyon grasslands in Idaho. Forestry, Wildlife, and Range Experiment Station Bulletin No. 32, University of Idaho, Moscow. 8 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.