Print Report

CEGL005885 Amelanchier alnifolia / (Mixed Grass, Forb) Shrubland

Type Concept Sentence: No Data Available


Common (Translated Scientific) Name: Saskatoon Serviceberry / (Mixed Grass, Forb) Shrubland

Colloquial Name: No Data Available

Hierarchy Level:  Association

Type Concept: This association is currently known only from Glacier National Park and Waterton Lakes National Park. It is found on moderate to steep slopes and flat benches. They are located at moderate elevations between 1300 and 1781 m (4262-5840 feet) predominately on southerly to easterly aspects. Soils tend to be moderately to well-drained sandy or clay loams or, occasionally, a rapidly drained Orthic Regosol. Sites are usually situated on glacial-fluvial or till deposits. Most of the ground surface is covered with litter and duff. This mixed-age shrubland is characterized by the presence of Amelanchier alnifolia, which occurs in all shrub canopy layers with 100% constancy and an average cover of 32%. Other shrubs include Symphoricarpos albus, Holodiscus discolor, Acer glabrum, Rubus parviflorus, and Spiraea betulifolia, with 10% average cover. Shrub height is variable due to heavy browsing or periodic avalanche disturbance, or both. The moderate to dense (70% average cover) herbaceous layer is diverse with over 100 species recorded in 23 stands. Common forb species include Fragaria virginiana, Achillea millefolium, and Galium boreale. Graminoids consist primarily of Carex geyeri and Calamagrostis rubescens; each has moderate constancy and an average cover of 14% and 24%, respectively. Other grasses present include both native and exotic species, such as Festuca idahoensis, Bromus carinatus, Poa pratensis, and Phleum pratense. All have 50% constancy or higher. Nonvascular cover is insignificant.

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 mixed-age shrubland is characterized by the presence of Amelanchier alnifolia, which occurs in all shrub canopy layers with 100% constancy and an average cover of 32%. Other shrubs include Symphoricarpos albus, Holodiscus discolor, Acer glabrum, Rubus parviflorus, and Spiraea betulifolia, with 10% average cover. Shrub height is variable due to heavy browsing or periodic avalanche disturbance, or both. The moderate to dense (70% average cover) herbaceous layer is diverse with over 100 species recorded in 23 stands. Common forb species include Fragaria virginiana, Achillea millefolium, and Galium boreale. Graminoids consist primarily of Carex geyeri and Calamagrostis rubescens; each has moderate constancy and an average cover of 14% and 24%, respectively. Other grasses present include both native and exotic species, such as Festuca idahoensis, Bromus carinatus, Poa pratensis, and Phleum pratense. All have 50% constancy or higher. Nonvascular cover is insignificant.

Dynamics:  No Data Available

Environmental Description:  It is found on moderate to steep slopes and flat benches. They are located at moderate elevations between 1300 and 1781 m (4262-5840 feet) predominately on southerly to easterly aspects. Soils tend to be moderately to well-drained sandy or clay loams or, occasionally, a rapidly drained Orthic Regosol. Sites are usually situated on glacial-fluvial or till deposits. Most of the ground surface is covered with litter and duff.

Geographic Range: This association is currently known only from Glacier National Park, Montana, and Waterton Lakes National Park, Albera. Its distribution elsewhere has not been determined.

Nations: CA,US

States/Provinces:  AB, MT




Confidence Level: Low

Confidence Level Comments: No Data Available

Grank: GNR

Greasons: No Data Available


Concept Lineage: No Data Available

Predecessors: No Data Available

Obsolete Names: No Data Available

Obsolete Parents: No Data Available

Synonomy: = Amelanchier alnifolia / (Mixed Grass, Forb) Shrubland (Hop et al. 2007)

Concept Author(s): Hop et al. (2007)

Author of Description: G. Kittel

Acknowledgements: No Data Available

Version Date: 01-15-04

  • ANHIC [Alberta Natural Heritage Information Centre]. 2018. Community database files. Alberta Natural Heritage Information Centre, Parks and Protected Areas Division, Alberta Community Development, Edmonton.
  • 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.