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Alnus viridis ssp. sinuata / Oplopanax horridus Shrub Swamp
Translated Name: Sitka Alder / Devil's-club Shrub Swamp
Unique Identifier: CEGL001157
Classification Approach: International Vegetation Classification (IVC)
Summary: This association occurs in the Cascade Range and Olympic Mountains at middle elevations 1125-1410 m (3700-4600 feet). Sites are usually moderate to steep slopes, usually on talus, debris fields or avalanche chutes with subsurface irrigation. The well-developed tall-shrub layer is dominated by Alnus viridis ssp. sinuata with a slightly lower shrub layer characterized by >10% cover of Oplopanax horridus. Several other shrub species, especially Rubus spectabilis and Sambucus racemosa, can occur in abundance. Frequently occurring herbs include Athyrium filix-femina, Achlys californica, Achlys triphylla, Claytonia sibirica. Streptopus lanceolatus var. curvipes, Maianthemum stellatum, and Viola glabella. Callitropsis nootkatensis is the most constantly occurring tree species but it is never prominent.



Classification

Classification Confidence: Low - Poorly Documented

Vegetation Hierarchy
Class 2 - Shrub & Herb Vegetation
Subclass 2.C - Shrub & Herb Wetland
Formation 2.C.4 - Temperate to Polar Freshwater Marsh, Wet Meadow & Shrubland
Division 2.C.4.Nb - Western North American Temperate & Boreal Freshwater Marsh, Wet Meadow & Shrubland
Macrogroup Vancouverian Lowland Marsh, Wet Meadow & Shrubland
Group Vancouverian Wet Shrubland
Alliance Pacific Green Alder - Vine Maple Shrub Swamp

This is the revised vegetation hierarchy. For more information see Classification Sources and usnvc.org.

Similar Associations
Unique Identifier Name
CEGL001156 Alnus viridis ssp. sinuata / Athyrium filix-femina - Cinna latifolia Wet Shrubland



Related Concepts from Other Classifications

Related Subnational Community Units
These data are subject to substantial ongoing revision and may be out of date for some states.
In the U.S., contact the state Heritage Program for the most complete and up-to-date information at: http://www.natureserve.org/natureserve-network.
Information from programs in other jurisdictions will be posted when they are made available.
Subnation Concept Name Relationship to Standard Confidence Reference
Oregon Alnus viridis ssp. sinuata - Oplopanax horridus Equivalent Certain Kagan et al. 2004


Other Related Concepts
Related Concept Name: Alnus sinuata/Oplopanax horridum Association
Relationship: = - Equivalent
Reference: Kovalchik, B. L. 2001. Classification and management of aquatic, riparian and wetland sites on the national forests of eastern Washington. Part 1: The series descriptions. 429 pp. plus appendix. [http://www.reo.gov/col/wetland_classification/wetland_classification.pdf]
Related Concept Name: Alnus sinuata/Forb association
Relationship: ? - Undetermined
Reference: Henderson, J. A., and D. Peter. 1982. Preliminary plant associations and habitat types of the Snoqualmie and adjacent Skykomish River drainages, Mt. Baker-Snoqualmie National Forest. Unpublished report prepared for USDA Forest Service, Pacific Northwest Region. 87 pp.
Related Concept Name: Alnus viridis ssp. sinuata-Oplopanax horridus Shrubland
Relationship: = - Equivalent
Reference: Crawford, R. C., C. B. Chappell, C. C. Thompson, and F. J. Rocchio. 2009. Vegetation classification of Mount Rainier, North Cascades, and Olympic national parks. Plant association descriptions and identification keys: Appendices A-G. Natural Resource Technical Report NPS/NCCN/NRTR--2009/D-586. National Park Service, Fort Collins, CO. 586 pp.
Related Concept Name: Oplopanax horridus - Alnus viridis
Relationship: = - Equivalent
Reference: Brett, R. B., K. Klinka, and H. Qian. 1998. Classification of high-elevation, non-forested plant communities in coastal British Columbia. Forest Science Department, University of British Columbia, Vancouver. Scientica Silvica. 58 pp.

Ecological Systems Placement

Ecological Systems Placement
Ecological System Unique ID Ecological System Name
CES204.866 North Pacific Montane Riparian Woodland and Shrubland


NatureServe Conservation Status
Global Status: G4G5 (01Feb1996)
Rounded Global Status: G4 - Apparently Secure

Distribution
Color legend for Distribution Map
United States Distribution: OR, WA
Canadian Province Distribution: BC
Global Distribution: Canada, United States

U.S. Forest Service Ecoregions
Domain Name: Humid Temperate Domain
Division Name: Marine Regime Mountains
Province Name: Cascade Mixed Forest - Coniferous Forest - Alpine Meadow Province
Province Code: M242 Occurrence Status: Confident or certain
Section Name: Oregon and Washington Coast Ranges Section
Section Code: M242A Occurrence Status: Confident or certain
Section Name: Western Cascades Section
Section Code: M242B Occurrence Status: Confident or certain


Vegetation


Vegetation Composition (incomplete)
Species Name Rounded Global Status Growth Form Stratum Charact-
eristic
Dominant Constant
Cover Class %
Con-
stancy
%
Alnus viridis ssp. sinuata G4 Broad-leaved deciduous shrub Tall shrub/sapling  
 
 
Oplopanax horridus G4 Broad-leaved deciduous shrub Short shrub/sapling  
 
 


Environmental Setting

Wetland Indicator: Y


Dynamic Processes


Plot Sampling & Classification Analysis

Plots stored in VegBank


Authors/Contributors
Concept Author(s): Crawford et al. (2009)
Element Description Edition Date: 04Jan2016
Element Description Author(s): Crawford et al. (2009)

Ecological data developed by NatureServe and its network of natural heritage programs (see Local Programs) and other contributors and cooperators (see Sources).


References
  • 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.

  • Brett, R. B., K. Klinka, and H. Qian. 1998. Classification of high-elevation, non-forested plant communities in coastal British Columbia. Forest Science Department, University of British Columbia, Vancouver. Scientica Silvica. 58 pp.

  • Cole, D. N. 1982. Vegetation of two drainages in Eagle Cap Wilderness, Wallowa Mountains, Oregon. Research Paper INT-288. USDA Forest Service, Intermountain Forest and Range Experiment Station, Ogden, UT. 26 pp.

  • Crawford, R. C., C. B. Chappell, C. C. Thompson, and F. J. Rocchio. 2009. Vegetation classification of Mount Rainier, North Cascades, and Olympic national parks. Plant association descriptions and identification keys: Appendices A-G. Natural Resource Technical Report NPS/NCCN/NRTR--2009/D-586. National Park Service, Fort Collins, CO. 586 pp.

  • Daubenmire, R. F., and J. B. Daubenmire. 1968. Forest vegetation of eastern Washington and northern Idaho. Washington State University Agricultural Experiment Station Technical Bulletin No. 60. 104 pp.

  • Hemstrom, M. A., S. E. Logan, and W. Pavlat. 1987. Plant association and management guide, Willamette National Forest. Report R6-Ecol 257-B-86. USDA Forest Service, Pacific Northwest Region, Portland, OR. 312 pp.

  • Henderson, J. A., and D. Peter. 1982. Preliminary plant associations and habitat types of the Snoqualmie and adjacent Skykomish River drainages, Mt. Baker-Snoqualmie National Forest. Unpublished report prepared for USDA Forest Service, Pacific Northwest Region. 87 pp.

  • 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.

  • Kovalchik, B. L. 2001. Classification and management of aquatic, riparian and wetland sites on the national forests of eastern Washington. Part 1: The series descriptions. 429 pp. plus appendix. [http://www.reo.gov/col/wetland_classification/wetland_classification.pdf]

  • 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.

  • Williams, C. K., and A. H. Winward. 1976. Plant community types of the Badger Allotment, Barlow Ranger District, Mt. Hood National Forest. USDA Forest Service and Oregon State University Rangeland Resources Program. 68 pp.


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