Print Report

CEGL005860 Achnatherum nelsonii - Lupinus sericeus Grassland

Type Concept Sentence: No Data Available


Common (Translated Scientific) Name: Columbia Needlegrass - Silky Lupine Grassland

Colloquial Name: No Data Available

Hierarchy Level:  Association

Type Concept: This montane, mesic to subxeric, herbaceous association is uncommon in Waterton Lakes National Park, Alberta, and on the west side of Glacier National Park, Montana. It occurs at elevations between 1090 and 1360 m (3580-4460 feet) under a broad range of environmental conditions, on flat to somewhat steep slopes from the basin floor to high slopes at various aspects. Soil texture ranges from moderately well-drained to rapidly drained silt loam or clay. These are generally moderately to well-developed, medium- to coarse-textured soils that have developed on fluvial, morainal, and sometimes eolian landforms. These landforms include alluvial terraces, benches, fluvial fans, and ground moraines. Litter and small rock dominate the ground surface. One of the sampled areas in Glacier National Park burned in the 1988 Red Bench fire. This association is dominated by Achnatherum nelsonii with 1-90% cover, Lupinus sericeus with 5-15% cover, and Koeleria macrantha with 10-20% cover. Overall herbaceous cover ranges from 90-100% with moderate species diversity and heights less than 0.5 m. Other moderate- to high-constancy species with average cover ranging from 1-5% include Galium boreale, Achillea millefolium, Festuca idahoensis, Gaillardia aristata, Arnica sororia, Antennaria parvifolia, Zigadenus elegans, Anemone multifida, Castilleja lutescens, Lithospermum ruderale, and Potentilla gracilis. Low-constancy herbaceous species that may have conspicuous cover in certain areas are Pseudoroegneria spicata, Danthonia parryi, Fragaria virginiana, Selaginella densa, Monarda fistulosa, Poa nemoralis ssp. interior, Carex petasata, Apocynum androsaemifolium, and Elymus trachycaulus. Poa pratensis and Phleum pratense may also be present with low to moderate cover in disturbed areas. Shrubs may be present in certain areas with low cover. Common shrubs may include Dasiphora fruticosa ssp. floribunda, Arctostaphylos uva-ursi, and Rosa acicularis. Nonvascular cover averages 5%.

Diagnostic Characteristics: No Data Available

Rationale for Nominal Species or Physiognomic Features: No Data Available

Classification Comments: This type has apparently been identified on the Kootenai National Forest (to the west of Glacier National Park, bordering northern Idaho) (Cooper 2003) as a minor type of shallow soil openings in montane forests.

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

Physiognomy and Structure: No Data Available

Floristics: This association is dominated by Achnatherum nelsonii with 1-90% cover, Lupinus sericeus with 5-15% cover, and Koeleria macrantha with 10-20% cover. Overall herbaceous cover ranges from 90-100% with moderate species diversity and heights less than 0.5 m. Other moderate- to high-constancy species with average cover ranging from 1-5% include Galium boreale, Achillea millefolium, Festuca idahoensis, Gaillardia aristata, Arnica sororia, Antennaria parvifolia, Zigadenus elegans, Anemone multifida, Castilleja lutescens, Lithospermum ruderale, and Potentilla gracilis. Low-constancy herbaceous species that may have conspicuous cover in certain areas are Pseudoroegneria spicata, Danthonia parryi, Fragaria virginiana, Selaginella densa, Monarda fistulosa, Poa nemoralis ssp. interior (= Poa interior), Carex petasata, Apocynum androsaemifolium, and Elymus trachycaulus. Poa pratensis and Phleum pratense may also be present with low to moderate cover in disturbed areas. Shrubs may be present in certain areas with low cover. Common shrubs may include Dasiphora fruticosa ssp. floribunda, Arctostaphylos uva-ursi, and Rosa acicularis. Nonvascular cover averages 5%.

Dynamics:  No Data Available

Environmental Description:  This montane, mesic to subxeric, herbaceous association is uncommon in Waterton Lakes National Park, Alberta, and on the west side of Glacier National Park, Montana. It occurs at elevations between 1090 and 1360 m (3580-4460 feet) under a broad range of environmental conditions, on flat to somewhat steep slopes from the basin floor to high slopes at various aspects. Soil texture ranges from moderately well-drained to rapidly drained silt loam or clay. These are generally moderately to well-developed, medium- to coarse-textured soils that have developed on fluvial, morainal, and sometimes eolian landforms. These landforms include alluvial terraces, benches, fluvial fans, and ground moraines. Litter and small rock dominate the ground surface. One of the sampled areas in Glacier National Park burned in the 1988 Red Bench fire.

Geographic Range: This association is know from Idaho, Montana and Alberta, Canada.

Nations: CA,US

States/Provinces:  AB, ID, MT




Confidence Level: Low

Confidence Level Comments: No Data Available

Grank: G2G3

Greasons: No Data Available


Concept Lineage: No Data Available

Predecessors: No Data Available

Obsolete Names: No Data Available

Obsolete Parents: No Data Available

Synonomy: = Achnatherum nelsonii - Lupinus sericeus Herbaceous Vegetation (Hop et al. 2007)
= Achnatherum nelsonii - Lupinus sericeus Vegetation Type (Cooper 2003)

Concept Author(s): Hop et al. (2007)

Author of Description: S.V. Cooper

Acknowledgements: No Data Available

Version Date: 02-02-04

  • Allen, L. 2012-2013. Alberta Conservation Information Management System Ecological Community Tracking List. Alberta Tourism, Parks and Recreation, Edmonton, AB. [http://tpr.alberta.ca/parks/heritageinfocentre/default.aspx]
  • Cooper, S. V. 2003. Assessment of Kootenai National Forest vegetation types with potential for Silene spaldingii in the Tobacco Plains, Rexford Bench and Salish Range foothills. Unpublished report to Kootenai National Forest, Supervisor''s Office. Montana Natural Heritage Program, Helena, MT. 33 pp. plus appendices.
  • 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.
  • Mueggler, W. F., and W. L. Stewart. 1980. Grassland and shrubland habitat types of western Montana. General Technical Report INT-66. USDA Forest Service, Intermountain Forest and Range Experiment Station, Ogden, UT. 154 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.
  • Western Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Boulder, CO.