Print Report

A3967 Rosa nutkana Central Rocky Mountain Shrubland Alliance

Type Concept Sentence: Shrublands in this alliance are dominated by Rosa nutkana with an herbaceous layer dominated by Deschampsia cespitosa or Oenanthe sarmentosa. It is found in the mountains of Oregon at montane elevations.


Common (Translated Scientific) Name: Nootka Rose Central Rocky Mountain Shrubland Alliance

Colloquial Name: Central Rocky Mountain Nootka Rose Shrubland

Hierarchy Level:  Alliance

Type Concept: The vegetation of this Pacific Northwest shrubland alliance is characterized by a Rosa nutkana-dominated shrub layer. Common associates are Cornus sericea and Symphoricarpos albus which may occur with low cover. The moderate to dense herbaceous layer is dominated by mesic perennial graminoids and forbs, including Deschampsia cespitosa or Oenanthe sarmentosa. Scattered trees may be present with low cover. This small-patch shrubland alliance is found in the mountains of Oregon at montane elevations. It typically occurs in moist sites such as in floodplains, along open streambanks, and in mesic meadows.

Diagnostic Characteristics: This alliance is characterized by a dominance of diagnostic species Rosa nutkana in the shrub layer with an herbaceous layer dominated by Deschampsia cespitosa or Oenanthe sarmentosa.

Rationale for Nominal Species or Physiognomic Features: No Data Available

Classification Comments: Kept as a single-dominant alliance as it is composed of two S1 and S2 associations in Oregon.

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

Physiognomy and Structure: Vegetation included in this alliance has a moderate to dense, cold-deciduous, broad-leaved, short-shrub layer (<2 m tall) with a moderately dense to dense herbaceous layer (<1 m tall) that is typically dominated by perennial graminoids.

Floristics: This shrubland alliance is characterized by a moderate to dense shrub layer dominated by Rosa nutkana. Common associates are Cornus sericea and Symphoricarpos albus which may occur with low cover. The moderate to dense herbaceous layer is dominated by mesic perennial graminoids and forbs. High constancy, sometimes dominant species include Deschampsia cespitosa or Oenanthe sarmentosa. Scattered trees may be present with low cover, such as Populus tremuloides and Populus balsamifera ssp. trichocarpa (= Populus trichocarpa) (Reed 1993).

Dynamics:  Rosa nutkana is frequently top-killed by fire and will root-sprout from rhizomes and root crowns following fire and may also regenerate from surviving seed in the seed bank (Haeussler et al. 1990, Reed 1993). However, high-severity fire may kill Rosa shrubs when root crowns and rhizomes are shallowly buried (Haeussler et al. 1990, Reed 1993). The species is tolerant of both sun and shade and shows increased growth and fruit production with increasing light (Haeussler et al. 1990, Reed 1993).

Environmental Description:  This Pacific Northwest shrubland alliance is found in the mountains of Oregon at montane elevations. This small-patch alliance typically occurs in moist sites such as in floodplains, along open streambanks, and in mesic meadows (Reed 1993). Rosa nutkana grows best at pH ranges of 5.6 to 7.0. It thrives on moderately fertile, well-drained clay loam, sandy loam, or sandy soils (Haeussler et al. 1990, Reed 1993).

Geographic Range: This shrubland alliance is known from the mountains of Oregon.

Nations: US

States/Provinces:  OR




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: No Data Available

Concept Author(s): K.A. Schulz, in Faber-Langendoen et al. (2013)

Author of Description: K.A. Schulz

Acknowledgements: No Data Available

Version Date: 03-14-14

  • Aller, A. R., M. A. Fosberg, M. C. Lazelle, and A. L. Falen. 1981. Plant communities and soils of north slopes in the Palouse region of eastern Washington and northern Idaho. Northwest Science 55:248-262.
  • Faber-Langendoen, D., J. Drake, M. Hall, G. Kittel, S. Menard, C. Nordman, M. Pyne, M. Reid, M. Russo, K. Schulz, L. Sneddon, K. Snow, and J. Teague. 2013-2019b. Screening alliances for induction into the U.S. National Vegetation Classification: Part 1 - Alliance concept review. NatureServe, Arlington, VA.
  • Haeussler, S., D. Coates, and J. Mather. 1990. Autecology of common plants in British Columbia: A literature review. Economic and Regional Development Agreement FRDA Report 158. Forestry Canada, Pacific Forestry Centre; British Columbia Ministry of Forests, Research Branch, Victoria, BC. 272 pp.
  • Reed, W. R. 1993a. Rosa nutkana. In: Fire Effects Information System [Online]. USDA Forest Service, Rocky Mountain Research Station, Fire Sciences Laboratory (Producer). [http://www.fs.fed.us/database/feis/]