Print Report
CEGL000545 Populus tremuloides - Pseudotsuga menziesii / Juniperus communis Forest
Type Concept Sentence: No Data Available
Common (Translated Scientific) Name: Quaking Aspen - Douglas-fir / Common Juniper Forest
Colloquial Name: No Data Available
Hierarchy Level: Association
Type Concept: This minor, seral, mixed aspen-conifer forest association occurs in the Uinta Mountains and Paunsaugunt Plateau in Utah, Snake Range in eastern Nevada, and the Colorado Front Range between 2300 and 2985 m (7540-9785 feet) elevation. Stands occur on a variety of sites and substrates (sandstone, quartz and granite). Soils are often shallow and coarse-textured. The vegetation is characterized by a relatively open to dense, mixed conifer and deciduous tree canopy codominated by Pseudotsuga menziesii and Populus tremuloides. Other conifer trees may be present, such as Abies lasiocarpa, Picea engelmannii, Pinus contorta, Pinus flexilis, or Pinus ponderosa, The understory lacks a tall-shrub layer, although scattered Amelanchier alnifolia, Prunus virginiana, or Salix scouleriana may be present. Juniperus communis is the predominant species in the moderately dense to sparse short-shrub layer, with Arctostaphylos uva-ursi, Mahonia repens, and Symphoricarpos oreophilus as common associates. Other shrubs present may include Artemisia tridentata, Jamesia americana, Rosa woodsii, and Shepherdia canadensis. The relatively sparse herbaceous layer is a mixture of graminoids and low forbs. Common graminoids are Achnatherum occidentale, Bromus spp., Carex geyeri, Carex rossii, Elymus glaucus, and Elymus trachycaulus; forbs, such as Arnica latifolia, Astragalus miser, Fragaria vesca, Lathyrus lanszwertii var. leucanthus, Lupinus argenteus, Potentilla spp., Thalictrum fendleri, and Thermopsis divaricarpa may be present. The exotic species Poa pratensis and Taraxacum officinale are common in livestock-impacted stands.
Diagnostic Characteristics: No Data Available
Rationale for Nominal Species or Physiognomic Features: No Data Available
Classification Comments: No Data Available
Similar NVC Types: No Data Available
note: No Data Available
Physiognomy and Structure: No Data Available
Floristics: This association has an open to dense, mixed conifer and deciduous tree canopy codominated by Pseudotsuga menziesii and Populus tremuloides. Other conifer trees may be present, such as Abies lasiocarpa, Picea engelmannii, Pinus contorta, Pinus flexilis, or Pinus ponderosa. As stands age, Populus tremuloides cover is slowly reduced until Pseudotsuga menziesii becomes dominant. The understory lacks a tall-shrub layer, although scattered Amelanchier alnifolia, Prunus virginiana, or Salix scouleriana may be present. Juniperus communis is the predominant species in the moderately dense to sparse short-shrub layer, with Arctostaphylos uva-ursi, Mahonia repens, and Symphoricarpos oreophilus as common associates. Other shrubs present may include Artemisia tridentata, Jamesia americana, Rosa woodsii, and Shepherdia canadensis. The relatively sparse herbaceous layer is a mixture of graminoids and low forbs. Common graminoids are Achnatherum occidentale, Bromus spp., Carex geyeri, Carex rossii, Elymus elymoides, Elymus glaucus, and Elymus trachycaulus; forbs, such as Achillea millefolium, Arnica latifolia, Artemisia frigida, Artemisia ludoviciana, Astragalus miser, Fragaria vesca, Lathyrus lanszwertii var. leucanthus (= Lathyrus leucanthus), Lupinus argenteus, Potentilla spp., Thalictrum fendleri, and Thermopsis divaricarpa, may be present (Mueggler 1988). The exotic species Poa pratensis and Taraxacum officinale are common in livestock-impacted stands.
Dynamics: No Data Available
Environmental Description: This minor, seral, mixed aspen-conifer forest association occurs in the Uinta Mountains and Paunsaugunt Plateau in Utah, Snake Range in eastern Nevada, and the Colorado Front Range between 2300 and 2985 m (7540-9785 feet) elevation. Stands occur on a variety of sites and substrates (sandstone, quartz and granite) (Mueggler 1988). Soils are often shallow and coarse-textured.
Geographic Range: This minor, seral, mixed aspen-conifer forest association occurs in the Uinta Mountains and Paunsaugunt Plateau in Utah, Snake Range in eastern Nevada, and the Colorado Front Range.
Nations: US
States/Provinces: CO, NV, UT
Plot Analysis Summary:
http://vegbank.org/natureserve/ELEMENT_GLOBAL.2.688643
Confidence Level: Moderate
Confidence Level Comments: No Data Available
Grank: G3G4
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.1 White Fir - Douglas-fir - Blue Spruce Forest Macrogroup | M022 | 1.B.2.Nb.1 |
| Group | 1.B.2.Nb.1.c White Fir - Douglas-fir Southern Rocky Mountain Dry Forest Group | G226 | 1.B.2.Nb.1.c |
| Alliance | A3454 Douglas-fir Southern Rocky Mountain Forest & Woodland Alliance | A3454 | 1.B.2.Nb.1.c |
| Association | CEGL000545 Quaking Aspen - Douglas-fir / Common Juniper Forest | CEGL000545 | 1.B.2.Nb.1.c |
Concept Lineage: No Data Available
Predecessors: No Data Available
Obsolete Names: No Data Available
Obsolete Parents: No Data Available
Synonomy: = Populus tremuloides - Pseudotsuga menziesii / Juniperus communis Community Type (Mueggler and Campbell 1986)
= Populus tremuloides - Pseudotsuga menziesii / Juniperus communis Community Type (Mueggler 1988)
= Populus tremuloides - Pseudotsuga menziesii / Juniperus communis Community Type (Mueggler 1988)
- 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. 1986. Aspen community types of Utah. Research Paper INT-362. USDA Forest Service, Intermountain Forest and Range Experiment Station, Ogden, UT.
- Salas, D. E., J. Stevens, K. Schulz, M. Artmann, B. Friesen, S. Blauer, E. W. Schweiger, and A. Valdez. 2010b. Vegetation classification and mapping project report: Great Sand Dunes National Park and Preserve. Natural Resource Report NPS/ROMN/NRR--2010/179. National Park Service, Fort Collins, CO.
- Salas, D., J. Stevens, and K. Schulz. 2005. USGS-NPS Vegetation Mapping Program: Rocky Mountain National Park, Colorado. Technical Memorandum No. 8260-05-02. USDI Bureau of Reclamation, Denver, CO. 161 pp. plus Appendices A-L (733 pp.).
- Tendick, A., B. Friesen, G. Kittel, P. Williams, J. Coles, A. Wight, G. Wakefield, and A. Evenden. 2011a. Vegetation classification and mapping project report, Cedar Breaks National Monument. Natural Resource Technical Report NPS/NCPN/NRTR--2011/470. National Park Service, Fort Collins, CO.
- Tendick, A., G. Kittel, J. Von Loh, P. Williams, D. Cogan, J. Coles, A. Wight, G. Wakefield, and A. Evenden. 2011b. Vegetation classification and mapping project report, Bryce Canyon National Park. Natural Resource Technical Report NPS/NCPN/NRTR--2011/442. National Park Service, Fort Collins, CO.
- Western Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Boulder, CO.