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Abies lasiocarpa / Trautvetteria caroliniensis Swamp Forest
Translated Name: Subalpine Fir / Carolina Tassel-rue Swamp Forest
Unique Identifier: CEGL000339
Classification Approach: International Vegetation Classification (IVC)
Summary: This association is typified by large trees on very moist sites. This community is native from northern Idaho's Selkirk Mountains south to Oregon's Wallowa Mountains. Elevations range between 1220-1525 m (4000-5000 feet). Aspects are variable. Soils are silt loams and silt which are relatively deep. In Idaho and Washington, this community is associated with small draws and valleys less than 50 m wide. Oregon occurrences are mid-slopes as well as bottomland sites or sloping seeps. The tree canopy is dominated by Abies lasiocarpa and Picea engelmannii with 20-24% and 19-30% average cover, respectively. Small amounts of Pseudotsuga menziesii and Larix occidentalis occur in its northern distribution, while Oregon has minor Pinus contorta and Abies grandis cover. The major shrub is Vaccinium membranaceum (5-14% cover). Important forbs are Trautvetteria caroliniensis (13%) and Viola orbiculata (8%).



Classification

Classification Confidence: Low
Classification Comments: This association is defined as a PNV vegetation type. If it were renamed as a dominance type, the species would include Picea engelmannii. This type is common on the eastern half of the Okanogan National Forest, on all of the Colville National Forest (Williams and Lillybridge 1983, Williams et al. 1990b, Kovalchik 1993), and on Wenatchee National Forest (Lillybridge et al. 1995).

Vegetation Hierarchy
Class 1 - Forest & Woodland
Subclass 1.B - Temperate & Boreal Forest & Woodland
Formation 1.B.3 - Temperate Flooded & Swamp Forest
Division 1.B.3.Nc - Rocky Mountain-Great Basin Montane Flooded & Swamp Forest
Macrogroup Rocky Mountain-Great Basin Montane Riparian & Swamp Forest
Group Rocky Mountain-Great Basin Montane Riparian & Swamp Forest
Alliance Subalpine Fir - Engelmann Spruce Swamp Forest

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

Similar Associations
Unique Identifier Name
CEGL000336 Abies lasiocarpa - Picea engelmannii / Streptopus amplexifolius Swamp Forest
CEGL005897 Abies lasiocarpa - Picea engelmannii / Menziesia ferruginea / Streptopus amplexifolius Woodland



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
Idaho Abies lasiocarpa / Trautvetteria caroliniensis Forest Equivalent Certain IDCDC unpubl. data
Oregon Abies lasiocarpa / Trautvetteria caroliniensis Equivalent Certain Kagan et al. 2004


Other Related Concepts
Related Concept Name: Abies lasiocarpa / Trautvetteria caroliniensis
Relationship: = - Equivalent
Reference: Lillybridge, T. R., B. L. Kovalchik, C. K. Williams, and B. G. Smith. 1995. Field guide for forested plant associations of the Wenatchee National Forest. General Technical Report PNW-GTR-359. USDA Forest Service, Pacific Northwest Research Station, Portland, OR. 335 pp.
Related Concept Name: Abies lasiocarpa / Trautvetteria caroliniensis Forest
Relationship: = - Equivalent
Reference: Johnson, C. G., and R. R. Clausnitzer. 1992. Plant associations of the Blue and Ochoco mountains. R6-ERW-TP-036-92. USDA Forest Service, Pacific Northwest Region, Wallowa-Whitman National Forest. 163 pp. plus appendices.
Relationship: = - Equivalent
Reference: Kovalchik, B. L. 1993. Riparian plant associations on the national forests of eastern Washington - Draft version 1. USDA Forest Service, Colville National Forest, Colville, WA. 203 pp.

Ecological Systems Placement

Ecological Systems Placement
Ecological System Unique ID Ecological System Name
CES306.833 Rocky Mountain Subalpine-Montane Riparian Woodland


NatureServe Conservation Status
Global Status: G3 (10Dec1999)
Rounded Global Status: G3 - Vulnerable
Reasons: This community occurs from northern Idaho to northeast Oregon. Although widespread, it tends to be naturally fragmented into narrow stringers and small swales. It is vulnerable to logging and stand-replacing fires.

Distribution
Color legend for Distribution Map
United States Distribution: CO, ID, OR, WA
Global Distribution: United States
Global Range: This association occurs in mountains of northeastern Oregon, eastern Washington, and western Idaho.

U.S. Forest Service Ecoregions
Domain Name: Dry Domain
Division Name: Temperate Steppe Regime Mountains
Province Name: Middle Rocky Mountain Steppe - Coniferous Forest - Alpine Meadow Province
Province Code: M332 Occurrence Status: Confident or certain
Section Name: Blue Mountains Section
Section Code: M332G Occurrence Status: Confident or certain
Province Name: Northern Rocky Mountain Forest - Steppe - Coniferous Forest - Alpine Meadow Province
Province Code: M333 Occurrence Status: Confident or certain
Section Name: Okanogan Highlands Section
Section Code: M333A 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
%
Abies lasiocarpa G3 Needle-leaved tree Tree canopy  
 
 
Picea engelmannii G3 Needle-leaved tree Tree canopy    
 
 
Vaccinium membranaceum G3 Broad-leaved deciduous shrub Shrub/sapling (tall & short)    
 
 
Trautvetteria caroliniensis G3 Flowering forb Herb (field)  
 
 


Environmental Setting

Wetland Indicator: Y


Dynamic Processes


Plot Sampling & Classification Analysis

Plots stored in VegBank


Authors/Contributors
Concept Author(s): M.P. Murray
Element Description Edition Date: 26Nov1997
Element Description Author(s): M.P. Murray
NatureServe Conservation Status Factors Edition Date: 10Dec1999
NatureServe Conservation Status Factors Author(s): M.P. Murray

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.

  • CNHP [Colorado Natural Heritage Program]. 2006-2017. Tracked natural plant communities. Colorado Natural Heritage Program, Colorado State University, Fort Collins. [https://cnhp.colostate.edu/ourdata/trackinglist/plant_communities/]

  • Clausnitzer, R. R., and B. A. Zamora. 1987. Forest habitat types of the Colville Indian Reservation. Unpublished report prepared for the Department of Forest and Range Management, Washington State University, Pullman. 110 pp.

  • Johnson, C. G., and R. R. Clausnitzer. 1992. Plant associations of the Blue and Ochoco mountains. R6-ERW-TP-036-92. USDA Forest Service, Pacific Northwest Region, Wallowa-Whitman National Forest. 163 pp. plus appendices.

  • 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. 1993. Riparian plant associations on the national forests of eastern Washington - Draft version 1. USDA Forest Service, Colville National Forest, Colville, WA. 203 pp.

  • Lillybridge, T. R., B. L. Kovalchik, C. K. Williams, and B. G. Smith. 1995. Field guide for forested plant associations of the Wenatchee National Forest. General Technical Report PNW-GTR-359. USDA Forest Service, Pacific Northwest Research Station, Portland, OR. 335 pp.

  • Titus, J. H., M. Kerr, E. Crowe, and B. Kovalchik. 1998. Riparian zones of eastern Oregon. Oregon Natural Heritage Program, Portland.

  • Volland, L. A. 1976. Plant communities of the central Oregon pumice zone. USDA Forest Service R-6 Area Guide 4-2. Pacific Northwest Region, Portland, OR. 113 pp.

  • 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., T. R. Lillybridge, and B. G. Smith. 1990b. Forested plant associations of the Colville National Forest. Report prepared for USDA Forest Service, Colville National Forest, Colville, WA. 133 pp.

  • Williams, C. K., and B. G. Smith. 1990. Forested plant associations of the Wenatchee National Forest. Unpublished draft prepared by the USDA Forest Service, Pacific Northwest Region, Portland, OR. 217 pp.


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Data last updated: March 2019