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Add/Drop	Name	Reference	Plots↓	Description
Comm #12021	Achnatherum hymenoides - Psoralidium lanceolatum Herbaceous Vegetation » more details accession code: VB.CC.34537.CEGL001650	Western Ecology Working Group of...	0	This herbaceous association ranges from Colorado and Utah north to Idaho and Montana and may also extend into Saskatchewan, Canada. This description is based on information from Great Sand Dunes National Park and Preserve in Colorado, and the following description is based on occurrences there. It is also reported from Idaho, Montana, Utah, Wyoming and possibly Saskatchewan. Additional global information will be added as it becomes available. This association occurs on dunefields and sandsheets at 2320 to 2355 m elevation. Stands are generally flat to slightly rolling. Soils are rapidly drained sands, and ground cover is dominated by bare soil. The majority of stands are located near stabilized dunefields. This is a sparsely vegetated (<30% total cover) community of active or stabilized dunes. <i>Achnatherum hymenoides</i> (10-30%) is dominant to codominant with <i>Psoralidium lanceolatum</i> (<10%). The few other species present may include scattered <i>Ericameria nauseosa</i> shrubs and trace amounts of graminoids and forbs such as <i>Hesperostipa comata, Redfieldia flexuosa, Sporobolus</i> spp., <i>Helianthus</i> spp. <i>Salsola</i> spp., and <i>Lygodesmia juncea</i>.
Comm #12022	Achnatherum hymenoides Shale Barren Herbaceous Vegetation » more details accession code: VB.CC.34673.CEGL001651	Western Ecology Working Group of...	0	This association is found on shale outcrops in Colorado and likely is more widespread. Elevations range from 2200-2321m (7200-7610 feet) in north-central Colorado and west-central Colorado to lower elevation sites at 1415 m (4640 feet) on mesatops in the Colorado Plateau. This association is described as a topo-edaphic climax, occurring on soils derived from shales or mudstones. It occupies stabilized badlands with rolling topography, commonly on ridgetops exposed to wind, desiccation and sheet erosion. Aspects are often southerly. Soils derived from shale and mudstone are typically shallow, calcareous, alkaline and clayey, often capped by a thin gravel layer. Total vegetative cover is relatively sparse, and bare soil ranges from 75% to near 100%. The vegetation has a relatively sparse (5-25% cover) herbaceous layer characterized by the perennial bunchgrass <i>Achnatherum hymenoides (= Oryzopsis hymenoides)</i>. The low mat-forming suffrutescent forb <i>Eriogonum brevicaule</i> may codominate some higher elevation stands. Scattered shrubs may be present, including <i>Artemisia nova, Artemisia tridentata ssp. wyomingensis, Ericameria nauseosa, Gutierrezia sarothrae, Krascheninnikovia lanata, Sarcobatus vermiculatus</i>, and <i>Tetradymia spinosa</i>. Associated grasses include <i>Achnatherum pinetorum, Elymus elymoides, Koeleria macrantha, Pascopyrum smithii</i>, and <i>Pleuraphis jamesii</i>. Forbs present and providing sparse cover include <i>Artemisia frigida, Eriogonum contortum, Eriogonum lonchophyllum</i>, and <i>Stenotus armerioides</i>. Other associated species are the non-native bunchgrass <i>Agropyron cristatum</i> and the exotic annual grass <i>Bromus tectorum</i>. As many as 40 species may occur in this association, but stands are highly variable.
Comm #12023	Midwest Maderate Cliff Vegetation » more details accession code: VB.CC.36919.CEGL002293	Midwestern Ecology Working Group...	0	This moist maderate cliff community type is found in the Driftless area of the upper midwestern United States. Stands occur on vertical or near-vertical dolomite bedrock exposures, with a northern to northeastern aspect. Maderate cliffs can be up to 60 m in height and may extend up to 0.6 km in length. Generally, the dissected (eroded) fissure and sink system essential in maintaining cold-air flow is small; fissures extend only 0.06 km or so into the rock, and the surface feeder sinks are usually cryptic. The yearly temperatures range only between about -10°C and +10°C. Humidity is fairly high, generally 80% at ground surface. The overall effect is to make the sites cooler than normal in summer and warmer than normal in winter. The vegetation on the cliffs is sparse, but typically herbaceous and shrub species include <i>Cystopteris bulbifera, Dasiphora fruticosa ssp. floribunda (= Pentaphylloides floribunda), Zigadenus elegans, Cornus canadensis, Galium triflorum, Campanula rotundifolia, Aquilegia canadensis, Solidago sciaphila, Physocarpus opulifolius</i>, and <i>Arabis lyrata</i>. Tree and shrub species in close proximity to maderate cliffs (at the base or overhanging the top) characteristically include <i>Pinus strobus, Abies balsamea, Betula alleghaniensis (= Betula lutea), Betula papyrifera, Taxus canadensis, Acer saccharum</i> and <i>Tilia americana</i>. Ferns, mosses and liverworts have been poorly characterized. Both maderate cliffs and the closely related algific talus slopes share some relict species that arrived shortly after the glaciers moved further north and the climate gradually ameliorated; both, however, contain their own unique suite of relict species. Among the relict and disjunct plants, <i>Rhodiola integrifolia ssp. leedyi (= Sedum integrifolium ssp. leedyi)</i> and <i>Draba arabisans</i> occur in the Paleozoic Plateau region only on the maderate cliffs. Several relict land snails are restricted to or occur on maderate cliffs, including two species within the proposed genera <i>Novisuccinea, Catinella gelida</i> and several <i>Vertigo</i> spp.
Comm #12024	CEGL008658 » more details accession code: VB.CC.7952.CEGL008658 NOT CURRENTLY ACCEPTED	EcoArt 2002	0
Comm #12025	Panicum bulbosum - Alopecurus aequalis Herbaceous Vegetation » more details accession code: VB.CC.33470.CEGL001653	Western Ecology Working Group of...	0	This association occurs in the lower foothills zone of an isolated desert mountain range in New Mexico. It is found along narrow channels of intermittent streams in draws or small canyons of the Animas Mountains foothills, at about 1770 m elevation. Soils are derived from silty alluvium and are gravelly loams, with a component of surface rocks. This is a lush, herbaceous wetland association, dominated by the mid-height perennial bunchgrasses <i>Panicum bulbosum</i> and <i>Alopecurus aequalis</i>. Together these species average 60% cover. Scattered seedling or saplings of the broad-leaved deciduous tree, <i>Fraxinus velutina</i>, may occur. Other herbaceous species are primarily graminoids, with few forbs, and contributing little cover (&lt;5%). No other information is available. Although only one example of this association has been documented, it is probably a remnant example of a type once much more extensive. The documented example is in very good condition, with little evidence of grazing impacts.
Comm #12026	Carex saxatilis Herbaceous Vegetation » more details accession code: VB.CC.33639.CEGL001769	Western Ecology Working Group of...	0	This wetland association has been described from the mountains of Utah, Montana, and Colorado and may extend north to Alaska. The elevation range for this community in Colorado and Utah is 2745-3200 m (9000-10,500 feet). The plant association occurs on organic soils near streams, in wet meadows, and as narrow bands along shorelines of ponds and small lakes. This typically dense graminoid community is dominated by <i>Carex saxatilis</i>. <i>Carex aquatilis</i> is often present and may be codominant. Other species often present with minor cover are <i>Pedicularis groenlandica, Caltha leptosepala, Deschampsia caespitosa</i>, and <i>Carex utriculata</i>.
Comm #12027	Metrosideros polymorpha Cloud Forest Alliance » more details accession code: VB.CC.23719.METROSIDEROSPOL	Western Ecology Working Group of...	0
Comm #12028	CEGL007659 » more details accession code: VB.CC.7270.CEGL007659	EcoArt 2002	0
Comm #12029	CEGL007660 » more details accession code: VB.CC.7271.CEGL007660	EcoArt 2002	0
Comm #12030	Poa palustris Herbaceous Vegetation » more details accession code: VB.CC.32277.CEGL001659	Western Ecology Working Group of...	0	This minor wet meadow association occurs in small patches in Idaho, Montana and northwestern Wyoming. <i>Poa palustris</i> colonizes and stabilizes wet sandy alluvial point bars, islands and streambanks at or below the high water line at elevations from 927 to 1829 m (3040-6000 feet), with a few stands occurring up to 2044 m (6700 feet). Soils alternate layers of silty clays with sands and cobbles. The water table tends to be near the surface early in the growing season, gradually falling through the summer. Intact examples appear as dense near-monocultures of <i>Poa palustris</i>, with scattered shrubs such as <i>Salix boothii, Salix geyeriana</i>, and <i>Alnus incana</i>. <i>Poa pratensis, Phleum pratense</i>, and <i>Agrostis stolonifera</i> are minor species in high-quality stands but may become dominant as domestic livestock grazing increases. Other native constituents of the community include <i>Juncus balticus, Deschampsia caespitosa, Carex aquatilis</i>, and <i>Pedicularis groenlandica</i>.