Print Report

CEGL005890 Symphoricarpos albus Shrubland

Type Concept Sentence: No Data Available


Common (Translated Scientific) Name: Common Snowberry Shrubland

Colloquial Name: No Data Available

Hierarchy Level:  Association

Type Concept: The association is known from the west side of the Continental Divide in Glacier National Park. It is found primarily on flat to gentle benches with south aspects but may also occur on valley floors, alluvial terraces, ridges, and slopes. Most sites are situated on glacial-fluvial or till deposits between elevations of 1043 and 1129 m (3419-3700 feet). The soils tend to be well-drained silt, sand, or clay loams with a negligible percentage of various sized rocks. There is moderate cover of litter and duff, and low cover of wood and bare soil. This shrubland is characterized by the presence of Symphoricarpos albus throughout the shrub canopy layers. The height of this species is 1 m or less. Immature or browsed forms of Salix scouleriana, Amelanchier alnifolia, and Prunus virginiana are often present. Each has moderate constancy and low average cover. Other shrub species present are Rosa woodsii, Spiraea betulifolia, and Mahonia repens. The moderate to high (69% average cover) herbaceous layer is composed of common forbs and graminoids, including Symphyotrichum laeve, Galium boreale, Phleum pratense, Chamerion angustifolium, Fragaria virginiana, Lathyrus ochroleucus, and Achillea millefolium. Each species has high constancy and less than 10% average cover.

Diagnostic Characteristics: No Data Available

Rationale for Nominal Species or Physiognomic Features: No Data Available

Classification Comments: This association from Glacier National Park is very similar to ~Symphoricarpos albus - Rosa nutkana Shrubland (CEGL001130)$$ of Idaho, Oregon and Washington. The western Montana occurrences are richer in shrubs species diversity, and have a higher abundance and somewhat different composition of herbaceous species. Further review of previous studies and data is needed to determine if these two associations should be merged.

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

Physiognomy and Structure: No Data Available

Floristics: This shrubland is characterized by the presence of Symphoricarpos albus throughout the shrub canopy layers. The height of this species is 1 m or less. Immature or browsed forms of Salix scouleriana, Amelanchier alnifolia, and Prunus virginiana are often present. Each has moderate constancy and low average cover. Other shrub species present are Rosa woodsii, Spiraea betulifolia, and Mahonia repens. The moderate to high (69% average cover) herbaceous layer is composed of common forbs and graminoids, including Symphyotrichum laeve (= Aster laevis), Galium boreale, Phleum pratense, Chamerion angustifolium, Fragaria virginiana, Lathyrus ochroleucus, and Achillea millefolium. Each species has high constancy and less than 10% average cover.

Dynamics:  No Data Available

Environmental Description:  In Montana, it is found primarily on flat to gentle benches with south aspects but may also occur on valley floors, alluvial terraces, ridges, and slopes. Most sites are situated on glacial-fluvial or till deposits between elevations of 1043 and 1129 m (3419-3700 feet). The soils tend to be well-drained silt, sand, or clay loams with a negligible percentage of various sized rocks. There is moderate cover of litter and duff, and low cover of wood and bare soil.

Geographic Range: The association is known from the west side of the Continental Divide in Glacier National Park, Montana, and in Washington.

Nations: US

States/Provinces:  MT, WA




Confidence Level: Low

Confidence Level Comments: No Data Available

Grank: G4?

Greasons: No Data Available


Concept Lineage: No Data Available

Predecessors: No Data Available

Obsolete Names: No Data Available

Obsolete Parents: No Data Available

Synonomy: = Symphoricarpos albus Shrubland (Hop et al. 2007)

Concept Author(s): Hop et al. (2007)

Author of Description: Western Ecology Group

Acknowledgements: No Data Available

Version Date: 01-21-04

  • Erixson, J., and D. Cogan. 2012c. Vegetation inventory project report: Nez Perce National Historical Park. Natural Resource Report NPS/UCBN/NRR--2012/531. National Park Service, Fort Collins, CO. 380 pp.
  • Hop, K., M. Reid, J. Dieck, S. Lubinski, and S. Cooper. 2007. U.S. Geological Survey-National Park Service Vegetation Mapping Program: Waterton-Glacier International Peace Park. U.S. Geological Survey, Upper Midwest Environmental Sciences Center, La Crosse, WI. 131 pp. plus Appendices A-L.
  • 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.
  • Western Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Boulder, CO.