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Add/Drop	Name	Reference	Plots↓	Description
Comm #10611	Pseudotsuga menziesii - Pinus flexilis / Leucopoa kingii Woodland » more details accession code: VB.CC.32999.CEGL000906	Western Ecology Working Group of...	0
Comm #10612	Abies concolor - Pseudotsuga menziesii / Lathyrus lanszwertii var. leucanthus Forest » more details accession code: VB.CC.34194.CEGL000250	Western Ecology Working Group of...	0	These coniferous forests have been described from the mountains of northern Arizona and northern New Mexico at elevations of 2591-2866 m. The association is found mainly on northern slopes. Soils are constantly moist and may be derived from various substrates, mainly volcanics. The evergreen needle-leaved tree canopy is dominated by either or both <i>Abies concolor</i> and <i>Pseudotsuga menziesii</i>. <i>Populus tremuloides</i> is important in disturbed stands and may have up to 15% canopy cover. Both <i>Pinus flexilis</i> and <i>Pinus ponderosa</i> may be present in younger stands. The shrub layer is generally sparse but may have up to 25% canopy cover composed of <i>Mahonia repens</i> with lesser amounts of <i>Symphoricarpos oreophilus, Lonicera arizonica, Juniperus communis</i>, and <i>Paxistima myrsinites</i>. The herbaceous layer cover is variable (5-50%). <i>Lathyrus lanszwertii var. leucanthus (= Lathyrus lanszwertii var. arizonicus)</i> dominates the herb layer with cover up to 20%. Other species include <i>Maianthemum stellatum, Prosartes trachycarpa (= Disporum trachycarpum), Thalictrum fendleri, Poa fendleriana, Carex siccata (= Carex foenea), Carex geyeri, Ligusticum porteri</i>, and <i>Thermopsis divaricarpa (= Thermopsis pinetorum)</i>. Because of the abundance of <i>Populus tremuloides</i>, fire may be necessary to maintain this association. Older stands are characterized by increased coverage of the shade-tolerant, fire-susceptible <i>Abies concolor</i>. This association can be distinguished from other mesic <i>Abies concolor - Pseudotsuga menziesii</i> forests by the dominance of <i>Lathyrus lanszwertii var. leucanthus</i> in the herbaceous layer.
Comm #10613	Pseudoroegneria spicata - Pascopyrum smithii Herbaceous Vegetation » more details accession code: VB.CC.21040.PSEUDOROEGNERIA	Western Ecology Working Group of...	0	This grassland association is found in the northern Great Plains and in the eastern foothills of the northern U.S. Rocky Mountains. Stands generally grow on slopes with shallow soils. Pseudoroegneria spicata dominates the vegetation, and rhizomatous wheatgrasses (Pascopyrum smithii or Elymus lanceolatus) are abundant. Forbs and shrubs contribute little cover.
Comm #10614	Abies concolor / Mahonia repens Forest » more details accession code: VB.CC.34609.CEGL000251	Western Ecology Working Group of...	0	This white fir forest occurs in mountains and higher plateaus in the Colorado Plateau and southern Rocky Mountains and ranges from central Utah and southern Colorado south into New Mexico and Arizona, and possibly extends into eastern Nevada. Stands are found on a variety of generally cool and dry sites with gentle to steep slopes (3-50%). Landforms include valleys and plateaus, low and midslopes of hills, mesas, ravines, and canyonsides, and exposed ridge and mountain summits at elevations ranging from 2230 to 2930 m (7300-9600 feet). Aspect is variable, but stands often occur on cooler northerly aspects, especially at mid to lower elevations. Substrates are rapidly drained coarse- to fine-textured loam soils derived from limestone, sandstone, shale, and rhyolitic volcanics. The vegetation is characterized by a moderate to closed tree canopy (25-72% cover) that is generally dominated or codominated by <i>Abies concolor</i> or is at least present in the tree canopy and dominates understory regeneration. <i>Pseudotsuga menziesii</i> is often present to codominant in the canopy. Other trees may be present in the canopy or subcanopy with low to moderate cover, such as <i>Pinus ponderosa, Pinus flexilis, Populus tremuloides</i>, and <i>Picea engelmannii</i> (accidental). The understory is characterized by the sparse to occasionally moderately dense, low-diversity understory with 1-10% cover of the diagnostic dwarf-shrub <i>Mahonia repens</i>. If the shrub layer is moderately dense, then it is dominated by <i>Mahonia repens</i>. Other shrubs may be present and include a few scattered <i>Symphoricarpos oreophilus, Arctostaphylos patula, Holodiscus dumosus, Paxistima myrsinites, Rosa woodsii</i>, or <i>Juniperus communis</i>. The herbaceous layer is typically sparse, with low diversity, and frequently includes the graminoids <i>Carex rossii, Carex geophila, Carex inops ssp. heliophila, Poa fendleriana</i>, and the forbs <i>Goodyera oblongifolia, Lathyrus lanszwertii var. leucanthus (= Lathyrus arizonicus), Mertensia arizonica, Thalictrum fendleri</i>, and <i>Viola canadensis</i>. <i>Pseudotsuga menziesii</i> and <i>Abies concolor</i> seedlings are typically present.
Comm #10615	Abies concolor - Picea pungens - Populus angustifolia / Acer glabrum Forest » more details accession code: VB.CC.34269.CEGL000255	Western Ecology Working Group of...	0	This evergreen forest association is a rich, mixed conifer-deciduous forest occurring on active floodplains and streambanks of montane valley floors. The presence of <i>Abies concolor</i> distinguishes this community from the more common ~<i>Populus angustifolia - Picea pungens / Alnus incana</i> Woodland (CEGL000934)$$ and is indicative of the southern-most mountains in Colorado.
Comm #10616	CEGL008105 » more details accession code: VB.CC.7639.CEGL008105 NOT CURRENTLY ACCEPTED	EcoArt 2002	0
Comm #10617	Abies lasiocarpa / Rhododendron albiflorum Woodland » more details accession code: VB.CC.25078.ABIESLASIOCARPA	Western Ecology Working Group of...	0
Comm #10618	CEGL002518 » more details accession code: VB.CC.4939.CEGL002518 NOT CURRENTLY ACCEPTED	EcoArt 2002	0
Comm #10619	CEGL002520 » more details accession code: VB.CC.4941.CEGL002520 NOT CURRENTLY ACCEPTED	EcoArt 2002	0
Comm #10620	Abies lasiocarpa / Physocarpus malvaceus Forest » more details accession code: VB.CC.34567.CEGL000326	Western Ecology Working Group of...	0	This forest association is present throughout the Wasatch Range of northern Utah and southeastern Idaho but is most common in the southern part of the Wasatch Range. It also occurs infrequently on the northern portion of the Wasatch Plateau in central Utah and is considered a minor type near Alpine, Wyoming, and the Hoback River. Stands are primarily isolated with a patchy distribution on steep north-facing slopes and diverse soils that range from mainly sandstone to soils having a loamy to clayey texture. A layer of litter 2.54 to 7.62 cm (1-3 inches) thick is common within stands, while bare rock and soil are usually absent. <i>Pseudotsuga menziesii</i> is an important seral species. Remnant large-diameter stems of this species are often present in <i>Abies lasiocarpa</i>-dominated mid- to late-seral plant association. <i>Physocarpus malvaceus</i> dominates the understory. Other common shrubs include <i>Amelanchier alnifolia, Mahonia repens, Paxistima myrsinites</i>, and <i>Symphoricarpos oreophilus</i>. The herbaceous layer includes <i>Arnica cordifolia, Prosartes trachycarpa (= Disporum trachycarpum)</i>, and <i>Fragaria vesca</i>.