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Add/Drop	Name	Reference	Plots↓	Description
Comm #10101	Quercus sadleriana Shrubland [Placeholder] » more details accession code: VB.CC.20262.QUERCUSSADLERIA	Western Ecology Working Group of...	0
Comm #10102	Festuca idahoensis - Leucopoa kingii Herbaceous Vegetation » more details accession code: VB.CC.24322.FESTUCAIDAHOENS	Western Ecology Working Group of...	0	The association purportedly occurs in the mountains of Montana, Wyoming, and Idaho. Composition and distribution data for the association are scant. High-elevation grassland stands of the Blackpine Mountains of southern Idaho are tentatively classified within this plant association. The stands occur on well-drained ribbon scree formations of steep, west-facing slopes with convex microtopographical configuration at 8700 feet. The association appears to be restricted to high-elevation sites of intermediate productivity where combined factors of duration of snow cover, exposure to winter desiccation, and growing-season soil-moisture availability allow the occurrence of the association. Leucopoa kingii (= Festuca kingii) is well represented to abundant on this exposed, stabilized scree. Festuca idahoensis and Pseudoroegneria spicata are common to well represented. Stenotus acaulis (= Haplopappus acaulis), Packera cana (= Senecio canus), Erigeron linearis, and Artemisia frigida are common. Leucopoa kingii and Pseudoroegneria spicata codominate cushion plant associations occurring on adjacent more harsh, ridgetop sites. Artemisia tridentata ssp. vaseyana-dominated stands are adjacent on less harsh downslope sites.
Comm #10103	Alnus rubra / Rubus spectabilis Forest » more details accession code: VB.CC.27348.ALNUSRUBRARUBUS	Western Ecology Working Group of...	0
Comm #10104	Abies lasiocarpa / Caltha leptosepala ssp. howellii Forest » more details accession code: VB.CC.34342.CEGL000302	Western Ecology Working Group of...	0	This forest association is known only from the Boise and Salmon River mountains of central Idaho. The association occurs on wet, gently to moderately sloping terrain in the middle to upper portion of the subalpine zone, at 1890 to 2530 m (6200-8300 feet) elevation. Sites include lakeshores, sloping seeps and springs, margins of sloped flow-through peatlands, and low order headwater streams. Soils are often a deep organic horizon overlying loamy or sandy loam mineral horizons. Stands are codominated by mixed-aged <i>Abies lasiocarpa</i> and <i>Picea engelmannii</i>. <i>Abies lasiocarpa</i> is increasingly abundant with succession, though large-diameter <i>Picea engelmannii</i> may persist on productive sites. Conifer cover is low on extremely wet sites. <i>Caltha leptosepala ssp. howellii</i> is an important diagnostic species of these wet habitats, often the most abundant understory species with high cover. Mesic graminoid diversity and cover are typically low. A variety of other mesic forbs are present, sometimes with moderate to high cover. Common and characteristic forbs include <i>Pedicularis bracteosa</i> and <i>Dodecatheon jeffreyi</i>. Shrubs such as <i>Vaccinium scoparium</i> and <i>Lonicera involucrata</i> may occur with a patchy distribution on raised hummocks. Moss is often abundant on the wet soil; important species include <i>Aulacomnium palustre, Bryum weigelii</i>, and <i>Campylium stellatum</i>. Stands of the association are important for elk in summer and fall, and abundant lush forbs and proximity to water give rise to important feeding areas. Wet depressions provide excellent elk wallow habitats.
Comm #10105	Rhus trilobata Intermittently Flooded Shrubland Alliance » more details accession code: VB.CC.20393.RHUSTRILOBATAIN	Western Ecology Working Group of...	0	This riparian shrubland alliance forms linear bands on rocky, well-drained benches and toeslopes in the foothills and mountains. Elevations range from 600 m in New Mexico to 2000 m in Colorado. Types occur at the bottom of cliffs and on toeslopes in very narrow, steep (>50%), rocky river reaches having little floodplain development due to bedrock confinement. They often occur as a narrow band on rocky, well-drained benches located between the high-water line and the upland slopes in moderately wide valleys and along narrow reaches of larger rivers. Soil textures are shallow sandy loam or loamy sands over coarse alluvium or bedrock. A dense shrub layer dominated by up to 60% cover of Rhus trilobata characterizes types. Other shrubs can include Prunus serotina, Ribes aureum, Salix ligulifolia (= Salix eriocephala var. ligulifolia), Salix exigua, Berberis fendleri, Rosa woodsii, and Juniperus monosperma. The herbaceous layer is typically sparse due to shading, but can be composed of any of the following: Muhlenbergia montana, Pseudoroegneria spicata, Calamovilfa longifolia, Carex filifolia, Festuca idahoensis, or Schizachyrium scoparium. Salix exigua shrublands typically occur as a narrow band within the channel below the height of the Rhus trilobata types.
Comm #10106	Abies lasiocarpa - Picea engelmannii / Carex geyeri Forest » more details accession code: VB.CC.32079.CEGL000304	Western Ecology Working Group of...	0	This forest occupies the lower and grades into the upper subalpine zone of the interior mountains of Oregon, Washington, Idaho, Montana, Colorado and Utah. It occurs on shallow slopes and ridgetops, on all aspects. Slopes are mostly gentle but can be steep (6-48%). Elevation range is 2011 to 3260 m (6600-10,700 feet). Soils are non-gravelly to stony loams to silts, mostly from sedimentary substrates, and igneous parent material in Utah. The ground surface is mostly litter duff with traces of lichens and moss and has little rock or bare soil. <i>Abies lasiocarpa</i> is the dominant conifer in this forested association. <i>Picea engelmannii</i> is commonly a subdominant on all but the driest sites. Other conifers may be present and include <i>Pinus contorta, Pinus albicaulis</i>, and <i>Pseudotsuga menziesii</i>, these generally not exceeding the cover of <i>Abies lasiocarpa</i> and <i>Picea engelmannii</i> combined. On higher and colder sites, <i>Pinus albicaulis</i> can be important. Shrub cover is variable, ranging from absent to 20% over. Species include <i>Ribes</i> spp., <i>Vaccinium</i> spp., <i>Spiraea betulifolia, Mahonia repens (= Berberis repens)</i>, and <i>Sorbus scopulina</i>. The herbaceous layer is dominated by sparse to abundant <i>Carex geyeri</i>. <i>Calamagrostis rubescens</i> is generally absent or poorly represented. Forbs can be sparse. Other herbaceous species include <i>Festuca idahoensis, Pseudoroegneria spicata (= Agropyron spicatum), Arnica cordifolia, Arnica latifolia, Osmorhiza</i> spp., and <i>Moneses uniflora (= Pyrola uniflora)</i>. The dominance of <i>Abies lasiocarpa</i> in the upper canopy and as a reproducing tree, and the lack of abundance of other conifers, though present, is the differentiated character of the overstory, along with an abundance and constancy of <i>Carex geyeri</i> in the understory, characterize this association.
Comm #10107	Salicornia rubra Seasonally Flooded Herbaceous Alliance » more details accession code: VB.CC.24087.SALICORNIARUBRA	Western Ecology Working Group of...	0	This alliance is found in the northern Great Plains. Stands are found in shallow, broad depressions with poor drainage and high salt concentrations. Most soils are clay to silty loam and may have salt encrustations on the surface after drying out in midsummer. The surface soil has an average salt concentration of 4.8%. Water often collects on the surface in the spring or after heavy rains, but by midsummer the soil can be dry to moist. Total vegetation cover is sparse to moderate with exposed soil. The harsh conditions provided by the saline soil, spring flooding, and summer drought limit the number of species capable of growing in this alliance. Stands that have more stable water tables can have moderate diversity. Salicornia rubra, an annual forb, dominates this alliance. Other species that are often found are Chenopodium rubrum, Distichlis spicata, Hordeum jubatum, Puccinellia nuttalliana, and Suaeda calceoliformis.
Comm #10108	V.B.2.N.g » more details accession code: VB.CC.593.VB2NG	EcoArt 2002	0
Comm #10109	Pinus ponderosa / Vaccinium caespitosum Woodland » more details accession code: VB.CC.32144.CEGL005841	Western Ecology Working Group of...	0	This association is found in the montane zone of the central and northern Rocky Mountains from western Montana, Idaho and northeastern Washington. Elevations range from 700-1370 m (2300-4500 feet) extending to 1950 (6400 feet) east of the Continental Divide. Sites are relatively warm and moist, typically with cold nights, often occurring where cold air accumulates causing high diurnal temperature fluctuations, high daily maximum temperatures and frequent summer frosts. Topography is flat to gently undulating or moderately sloping terrain typically occurring on valley bottoms, terraces, lower slopes, and benches on all aspects. Soils are typically excessively well-drained, moderately deep, acidic, gravelly, sandy loam or loam, derived from a variety of noncalcareous parent materials, especially glacial till. Ground cover is mostly tree litter, often with duff over 4 cm deep. The vegetation is characterized by an open to moderately dense tree canopy that is dominated by <i>Pinus ponderosa</i>. In some stands scattered <i>Pseudotsuga menziesii, Larix occidentalis, Populus tremuloides, Picea engelmannii</i>, or <i>Pinus contorta</i> trees may be present. <i>Vaccinium caespitosum</i> and <i>Arctostaphylos uva-ursi</i> (indicator species) are common to dominant in the patchy to continuous dwarf-shrub layer. Other shrubs and dwarf-shrubs may include low cover of <i>Amelanchier alnifolia, Linnaea borealis</i> (on more mesic sites), <i>Mahonia repens, Paxistima myrsinites, Ribes</i> spp., <i>Rosa woodsii, Spiraea betulifolia</i>, or <i>Symphoricarpos albus</i>. The herbaceous layer is sparse to moderately dense (to 30% cover) and is typically dominated or codominated by perennial graminoids in the openings such as <i>Calamagrostis rubescens, Carex geyeri</i>, or <i>Festuca</i> spp. Forbs generally have sparse cover but may be diverse and include <i>Arnica cordifolia, Balsamorhiza sagittata, Fragaria virginiana, Heuchera cylindrica, Maianthemum racemosum, Tiarella trifoliata</i>, and <i>Thalictrum occidentale</i>.
Comm #10110	Betula papyrifera / Acer glabrum Woodland » more details accession code: VB.CC.32194.CEGL005844	Western Ecology Working Group of...	0	This association is locally common on the west side of Glacier National Park, Montana. It occurs on steep to very steep, mostly south-facing slopes at elevations between 1000 and 1200 m (3300-3900 feet). Soils are well-drained sandy loams or loams on colluvial landforms of argillite, including talus slopes. Generally these soils contain angular green argillite cobbles. Litter dominates the ground surface with 40-95% cover. All sampled areas have burned in natural wildfires in the last 100 years. This association is a montane, mesic, mixed evergreen-deciduous woodland that occurs as a result of hot, stand-replacing fires followed by precipitation events that erode much of the soil mantle from the slope. Consequently, few conifers establish, allowing <i>Betula papyrifera</i> to dominate. The upper tree canopy ranges from 30-60% cover with heights of 10-15 m. The tree subcanopy ranges from 5-60% cover. <i>Betula papyrifera</i> dominates with 20-50% cover. Other tree species that may be present include <i>Pseudotsuga menziesii, Populus tremuloides, Larix occidentalis</i>, and <i>Pinus monticola</i>. The tall-shrub layer ranges from 10-60% cover with heights 1-5 m. <i>Acer glabrum</i> and <i>Amelanchier alnifolia</i> are dominant; <i>Rubus parviflorus</i> is also common. <i>Betula papyrifera</i> and <i>Pseudotsuga menziesii</i> saplings, <i>Philadelphus lewisii, Prunus virginiana, Salix scouleriana</i>, and <i>Holodiscus discolor</i> may be present with moderate to high cover. <i>Symphoricarpos albus</i> and <i>Paxistima myrsinites</i> are the most common short shrubs. <i>Mahonia repens</i> can dominate the dwarf-shrub layer. The herbaceous cover is low, ranging from 5-20%. <i>Aralia nudicaulis</i> is the most dominant forb. Other high-constancy species include <i>Elymus glaucus, Chamerion angustifolium, Symphyotrichum laeve (= Aster laevis)</i>, and <i>Penstemon albertinus</i>. Nonvascular cover ranges from 0-10%.