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CEGL000622 Populus tremuloides / Wyethia amplexicaulis Forest
Type Concept Sentence: No Data Available
Common (Translated Scientific) Name: Quaking Aspen / Northern Mule''s-ears Forest
Colloquial Name: No Data Available
Hierarchy Level: Association
Type Concept: These park-like deciduous forests occur in the mountains of Utah, Nevada, Idaho, Wyoming, and possibly Colorado. Elevations are mostly below 2100 m. Sites are generally flat to gently sloping (<25%), and soils are typically heavy clays. This association has two canopies, a moderately dense (70% cover) tree canopy that is dominated by Populus tremuloides, and a dense herbaceous layer dominated by Wyethia amplexicaulis. Scattered shrub such as Symphoricarpos oreophilus and Amelanchier alnifolia are often present, but do not form a canopy. Other herbaceous species may include Senecio serra, Hackelia floribunda, Achillea millefolium, Osmorhiza spp., Bromus carinatus, Elymus trachycaulus, Elymus glaucus, and Carex spp. The introduced species Poa pratensis and Taraxacum officinale are common. Because of the simple, open stand structure and the dominance of an unpalatable forb, this type may be the partly the result of historic overgrazing by livestock. Succession to a conifer vegetation type is unlikely in stands of this association because there is little conifer regeneration.
Diagnostic Characteristics: No Data Available
Rationale for Nominal Species or Physiognomic Features: No Data Available
Classification Comments: Grazing may have altered stands in this association.
Similar NVC Types: No Data Available
note: No Data Available
Physiognomy and Structure: No Data Available
Floristics: This association has two canopies, a moderately dense (70% cover) tree canopy that is dominated by Populus tremuloides, and a dense herbaceous layer dominated by Wyethia amplexicaulis. Scattered shrub such as Symphoricarpos oreophilus and Amelanchier alnifolia are often present, but do not form a canopy. Other herbaceous species may include Senecio serra, Hackelia floribunda, Achillea millefolium, Osmorhiza spp., Bromus carinatus, Elymus trachycaulus, Elymus glaucus, and Carex spp. The introduced species Poa pratensis and Taraxacum officinale are common.
Dynamics: Because of the simple, open stand structure and the dominance of an unpalatable forb, this type may be the partly the result of historic overgrazing by livestock. Succession to a conifer vegetation type is unlikely in stands of this association because there is little conifer regeneration.
Environmental Description: Elevations are mostly below 2100 m. Sites are generally flat to gently sloping (<25%), and soils are typically heavy clays.
Geographic Range: This association is found in the mountains in northern Utah, northern Nevada, southeastern Idaho, western Wyoming, and possibly occurs in Colorado.
Nations: US
States/Provinces: CO, ID, NV, UT, WY
Plot Analysis Summary:
http://vegbank.org/natureserve/ELEMENT_GLOBAL.2.689484
Confidence Level: Low
Confidence Level Comments: No Data Available
Grank: G3
Greasons: No Data Available
| Type | Name | Database Code | Classification Code |
|---|---|---|---|
| Class | 1 Forest & Woodland Class | C01 | 1 |
| Subclass | 1.B Temperate & Boreal Forest & Woodland Subclass | S15 | 1.B |
| Formation | 1.B.2 Cool Temperate Forest & Woodland Formation | F008 | 1.B.2 |
| Division | 1.B.2.Nb Rocky Mountain Forest & Woodland Division | D194 | 1.B.2.Nb |
| Macrogroup | 1.B.2.Nb.5 Subalpine Fir - Engelmann Spruce - Whitebark Pine Rocky Mountain Forest Macrogroup | M020 | 1.B.2.Nb.5 |
| Group | 1.B.2.Nb.5.d Quaking Aspen Rocky Mountain Forest & Woodland Group | G222 | 1.B.2.Nb.5.d |
| Alliance | A2036 Quaking Aspen Rocky Mountain Forest & Woodland Alliance | A2036 | 1.B.2.Nb.5.d |
| Association | CEGL000622 Quaking Aspen / Northern Mule''s-ears Forest | CEGL000622 | 1.B.2.Nb.5.d |
Concept Lineage: No Data Available
Predecessors: No Data Available
Obsolete Names: No Data Available
Obsolete Parents: No Data Available
Synonomy: = Populus tremuloides / Wyethia amplexicaulis Community Type (Mueggler and Campbell 1982)
- 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.
- Mueggler, W. F. 1988. Aspen community types of the Intermountain Region. General Technical Report INT-250. USDA Forest Service, Intermountain Research Station, Ogden, UT. 135 pp.
- Mueggler, W. F., and R. B. Campbell, Jr. 1982. Aspen community types on the Caribou and Targhee national forests in southeastern Idaho. Research Paper INT-294. USDA Forest Service, Intermountain Forest and Range Experiment Station, Ogden, UT. 32 pp.
- Western Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Boulder, CO.
- Youngblood, A. P., and W. F. Mueggler. 1981. Aspen community types on the Bridger-Teton National Forest in western Wyoming. Research Paper INT-272. USDA Forest Service, Intermountain Forest and Range Experiment Station, Ogden, UT. 34 pp.