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Add/Drop	Name	Reference	Plots↓	Description
Comm #10661	Pinus contorta var. murrayana / Ledum glandulosum Forest » more details accession code: VB.CC.33171.CEGL008668	Western Ecology Working Group of...	0	This forest association is currently only known from Yosemite National Park in California, and the following description is based on occurrences there. Additional information will be added as it becomes available. This association is found along small streams and on the edges of meadows, or on slightly higher elevations in meadows, from approximately 2350 to 2740 m (7700-9000 feet) in elevation on flat to gentle slopes of variable aspects. Microtopography is sometimes hummocky with <i>Ledum</i> and pines growing on slightly elevated portions of more saturated surrounding terrain. Soil textures range from silty loam of granitic origin to muck. Soils are somewhat poorly drained to poorly drained. Litter/duff cover ranges from 20-95%. Sites are palustrine. The tree layer is composed almost solely of <i>Pinus contorta var. murrayana</i>, averaging 15-20 m in height and about 20% cover. <i>Ledum glandulosum</i> provides an average of 47% cover in the shrub layer, which is generally 0.5-1 m. Other (sub)shrubs include <i>Spiraea splendens var. splendens, Vaccinium uliginosum</i>, and <i>Kalmia polifolia</i>; <i>Pinus contorta var. murrayana</i> saplings are also present in the shrub layer. The herb layer is variable, with <i>Chamerion angustifolium (= Epilobium angustifolium), Perideridia parishii, Calamagrostis canadensis, Deschampsia caespitosa</i>, and <i>Carex utriculata</i> providing most of the cover in this layer. There are another 62, mostly wetland meadow species included in the plot summaries, but most of them average only trace cover.
Comm #10662	Populus tremuloides / Symphoricarpos oreophilus / Festuca thurberi Forest » more details accession code: VB.CC.32935.CEGL000614	Western Ecology Working Group of...	0
Comm #10663	CEGL004248 » more details accession code: VB.CC.5898.CEGL004248 NOT CURRENTLY ACCEPTED	EcoArt 2002	0
Comm #10664	Salix planifolia / Mesic Forbs Shrubland [Provisional] » more details accession code: VB.CC.25616.SALIXPLANIFOLIA	Western Ecology Working Group of...	0
Comm #10665	Arctostaphylos hookeri ssp. montana Shrubland Alliance » more details accession code: VB.CC.20173.ARCTOSTAPHYLOSH	Western Ecology Working Group of...	0
Comm #10666	Abies concolor - Calocedrus decurrens - Pinus lambertiana / Cornus nuttallii / Corylus cornuta var. californica Forest » more details accession code: VB.CC.34345.CEGL008677	Western Ecology Working Group of...	0	This forest association is currently only known from Yosemite National Park in California, and the following description is based on occurrences there. Additional information will be added as it becomes available. This association is found between 1770 and 1890 m (5800-6200 feet) on moderate to somewhat steep slopes, primarily on northern, northwestern, and western aspects. Soils are loamy sands of granitic origin. In Yosemite NP, this is usually a mesic and dense forest with the tree layer composed of greater than 10% cover each of <i>Abies concolor, Calocedrus decurrens</i>, and <i>Pinus lambertiana</i> with an understory cover predominantly composed of <i>Cornus nuttallii</i> and <i>Corylus cornuta</i>, averaging 5% each. Information suggests that herb cover is sparse, but <i>Adenocaulon bicolor</i> is present in at least some of the stands.
Comm #10667	CEGL002476 » more details accession code: VB.CC.4910.CEGL002476 NOT CURRENTLY ACCEPTED	EcoArt 2002	0
Comm #10668	Abies concolor - Pinus lambertiana Forest » more details accession code: VB.CC.34252.CEGL008679	Western Ecology Working Group of...	0	This forest association is currently only known from Yosemite National Park in California, and the following description is based on occurrences there. Additional information will be added as it becomes available. This association is found between 1525 and 2225 m (5000-7300 feet) in elevation. Typically, stands are on moderate to somewhat steep slopes, although slopes range from flat to steep. Aspects are variable, but most are north, northwest, west, or southwest. Soil depth is also variable, but is generally deep, with textures ranging from gravelly sand to sandy loam. Soils are derived from granitic bedrock. Sites are upland. This association is characterized by a dense canopy dominated by <i>Abies concolor</i> and <i>Pinus lambertiana</i>. <i>Pinus ponderosa, Quercus kelloggii</i>, and <i>Pinus jeffreyi</i> may also be present. <i>Abies concolor</i> is generally represented by sapling, pole and mature trees, while the other trees may only be present as mature trees. The shrub layer is generally absent, but shrubs that may be present include <i>Chamaebatia foliolosa, Ceanothus cordulatus</i>, and <i>Arctostaphylos patula</i>. The herb layer is sparse and the herbaceous species are variable.
Comm #10669	Abies magnifica - Abies concolor - Pinus jeffreyi Sierran Montane Chaparral Forest » more details accession code: VB.CC.34595.CEGL008682	Western Ecology Working Group of...	0	This forest is widespread at middle to lower elevations in the central and southern Sierra Nevada, California, at elevations generally between 1983 and 2440 m (6500-8000 feet). Aspects are variable, but a significant portion lie on southern slopes where solar radiation levels are significantly higher than most other sites. Stands are usually on upper slopes and some ridgetops. Slope angles are moderate to somewhat steep. Stand size is usually small, often covering less than an acre on small rock outcrops, but sometimes covering more that 50 acres. Sites have significantly less surface gravel and a deeper litter layer than drier sites commonly encountered. Soils are typically well-drained sandy loams and usually formed in place on granitic bedrock, but often form on alluvium, colluvium or glacial tills and outwash. In general, soils are deeper than most other sites. The average water-holding capacity is one of the highest in the upper montane of the Sierra Nevada. These are moderately dense forested stands with light understory vegetation. Overstory layers are distinguished by the presence of <i>Abies concolor</i> and <i>Pinus jeffreyi</i>, in a mix with <i>Abies concolor</i>. Understories are somewhat sparse. Occasionally <i>Chrysolepis sempervirens</i> can become a major component in the shrub layer and dominate understories, but in most cases shrubs occur as scattered patches and individuals. The herb layer most often contains <i>Pedicularis semibarbata, Kelloggia galioides, Hieracium albiflorum, Viola purpurea</i>, and <i>Pyrola picta</i>, although none of these are frequent. An important element in these understories is the presence of several shrub and forb species that occur at low frequency but can dominate sites in early-successional sequences. In the shrub layer, these are <i>Ceanothus cordulatus, Prunus emarginata, Arctostaphylos patula</i>, and <i>Chrysolepis sempervirens</i>. In the herb layer, they include <i>Pteridium aquilinum, Lupinus adsurgens, Lupinus andersonii</i>, and <i>Achnatherum lemmonii</i>.
Comm #10670	Metrosideros polymorpha Lowland Mesic Shrubland » more details accession code: VB.CC.24404.METROSIDEROSPOL	Western Ecology Working Group of...	0