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Comm #11721
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Pinus banksiana - (Picea mariana, Pinus strobus) / Vaccinium spp. Rocky Woodland
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accession code: VB.CC.36837.CEGL002483
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Midwestern Ecology Working Group... |
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This jack pine - black spruce rocky woodland is found in central Canada and adjacent boreal forests of the Great Lakes in the United States. Stands typically occur on shallow, sandy or rocky sites. Soils vary from talus slopes and bare bedrock to deep mineral soils of coarse to fine sand. The tree canopy is open, with scattered <i>Pinus banksiana</i> and <i>Picea mariana</i>. The understory is quite open, with scattered clumps of shrubby <i>Picea mariana</i>. The dwarf-shrub layer contains <i>Vaccinium angustifolium</i> and <i>Vaccinium myrtilloides</i>. The herbaceous layer is sparse, containing <i>Cornus canadensis, Maianthemum canadense</i>, and <i>Melampyrum lineare</i>. The moss layer contains <i>Dicranum polysetum</i> and <i>Pleurozium schreberi</i>. Lichens include <i>Cladina rangiferina (= Cladonia rangiferina), Cladina mitis (= Cladonia mitis)</i>, and <i>Cladina stellaris</i>. |
Comm #11722
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Pinus monophylla - Juniperus osteosperma / Cercocarpus ledifolius / Pseudoroegneria spicata Woodland
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accession code: VB.CC.33213.CEGL000834
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Western Ecology Working Group of... |
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This association has been described from a small region in south-central Idaho at the southern end of the Albion Mountains. The southern Albion Mountains, where this association is found, are a complex of four gneiss domes, aligned along a north-south axis. Landforms associated with these domes include steep-sided ridges, and erosional features such as tors and linear rock ridges enclosing narrow canyons. Rock types include granodiorite, gneiss with bodies of schist, some quartzite, and lenses, pods and sheets of amphibolite. Little information is available regarding the structure and composition of this association. Two evergreen needle-leaved trees dominate the canopy, <i>Pinus monophylla</i> and <i>Juniperus osteosperma</i>, with total cover of 30-70%. <i>Pinus monophylla</i> is always present, while the <i>Juniperus</i> is present with varying frequency. There is a tall-shrub layer dominated by the broad-leaved deciduous <i>Cercocarpus ledifolius</i>. The herbaceous understory is dominated by the perennial bunchgrass <i>Pseudoroegneria spicata</i>. No other information is available on plant species cover or composition. |
Comm #11723
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Dichanthium annulatum Herbaceous Alliance
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accession code: VB.CC.28510.DICHANTHIUMANNU
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Southeastern Ecology Working Gro... |
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This alliance includes pastures and other disturbed areas, including many roadsides, dominated by Dichanthium annulatum, either as the result of seeding (pasture improvement) or exotic invasion. |
Comm #11724
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CEGL008359
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accession code: VB.CC.7700.CEGL008359
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EcoArt 2002 |
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Comm #11725
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Pinus ponderosa - Quercus garryana / Balsamorhiza sagittata Woodland
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accession code: VB.CC.32834.CEGL000881
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Western Ecology Working Group of... |
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This mixed evergreen-deciduous woodland occupies hot, dry sites between 645-1060 m elevation on the eastern slope of the Oregon Cascades. Stands normally grow on ridges and upper slope positions of south-facing hillsides. Temperatures are very warm during the growing season and precipitation is low. These conditions limit the cover of trees and shrubs. The tree canopy is dominated by <i>Pinus ponderosa</i> and <i>Quercus garryana</i> with an occasional <i>Pseudotsuga menziesii</i>. Average tree cover is 50%, with <i>Pinus ponderosa</i> slightly more dominant than <i>Quercus garryana</i>. Trees are short and sparse. The shrub layer is also quite sparse, generally confined to small amounts of <i>Ceanothus prostratus, Ceanothus integerrimus</i>, or <i>Symphoricarpos</i> sp. Average cover of shrubs is only about 5%. The herbaceous flora is diverse, with <i>Balsamorhiza sagittata</i> the diagnostic species. <i>Lupinus caudatus</i> and <i>Lomatium triternatum</i> are always present and conspicuous. The graminoid layer is dominated by <i>Festuca idahoensis</i> and <i>Pseudoroegneria spicata</i>. This association has sparser shrub cover than ~<i>Pinus ponderosa - Quercus garryana / Purshia tridentata</i> Woodland (CEGL000883)$$. |
Comm #11726
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Pinus ponderosa / Purshia stansburiana Woodland
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accession code: VB.CC.33243.CEGL000854
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Western Ecology Working Group of... |
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These woodlands occur in central Arizona near the southern limit of <i>Pinus ponderosa</i>, and may also occur in central New Mexico north into Colorado, Utah, Wyoming and Idaho. Elevation ranges from 2240-2440 m. Sites often have a rough and rocky topography, but include flat and undulating terrain. Substrates are rocky, shallow, sandy textured soils typically derived from limestone, but also the association may also occur on sandstone and igneous parent materials. Stands have an open (>10% cover) tree canopy that is dominated by the needle-leaved evergreen tree, <i>Pinus ponderosa</i>. Other tree species present may include <i>Pinus edulis, Juniperus osteosperma, Juniperus scopulorum, Quercus gambelii</i>, and occasionally <i>Pseudotsuga menziesii</i>. The short-shrub layer has 5-25% cover with the deciduous shrub <i>Purshia stansburiana (= Purshia mexicana var. stansburiana)</i> being diagnostic of this type. Other common shrub species include <i>Artemisia nova, Purshia tridentata, Rhus trilobata, Quercus gambelii, Mahonia repens, Yucca baccata</i> and <i>Yucca glauca</i>. The relatively sparse (5-25% cover) herbaceous layer is dominated by graminoids such as <i>Muhlenbergia montana, Bouteloua</i> spp., <i>Aristida arizonica, Poa fendleriana</i>, and <i>Elymus elymoides</i> with scattered forbs such as <i>Heterotheca villosa, Solidago</i> spp., <i>Eriogonum racemosum</i>, and <i>Tradescantia pinetorum</i>. |
Comm #11727
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Pinus ponderosa / Juglans major Woodland
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accession code: VB.CC.33093.CEGL000858
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Western Ecology Working Group of... |
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This semi-riparian forest is found on terraces along perennial streams and large washes. The upper canopy is dominated by <i>Pinus ponderosa</i> and the subcanopy by <i>Juglans major</i>. Other subcanopy trees include <i>Acer negundo, Quercus</i> spp., <i>Juniperus deppeana, Juniperus scopulorum, Pinus edulis, Pinus monophylla var. fallax (= Pinus edulis var. fallax)</i>, and <i>Pinus discolor</i>. The shrub layer is moderate with <i>Vitis arizonica, Frangula betulifolia (= Rhamnus betulifolia), Rhus aromatica</i>, and <i>Salix boothii (= Salix pseudocordata)</i>. The herbaceous layer is dominated by the graminoids <i>Poa pratensis, Panicum bulbosum, Bromus ciliatus var. richardsonii (= Bromus richardsonii)</i>, and <i>Pascopyrum smithii</i>. Forbs can be diverse. The most common are <i>Geranium caespitosum, Galium mexicanum ssp. asperrimum, Pteridium aquilinum, Thalictrum fendleri</i>, and <i>Potentilla</i> spp. |
Comm #11728
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Viguiera parishii Shrubland [Placeholder]
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accession code: VB.CC.24382.VIGUIERAPARISHI
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Western Ecology Working Group of... |
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Comm #11729
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Pinus ponderosa / Juniperus horizontalis Woodland
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accession code: VB.CC.33092.CEGL000860
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Western Ecology Working Group of... |
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This woodland association has been described from north-central (Little Rocky Mountains) and the plains of northeastern Montana. All occurrences are below 1160 m (3800 feet) on calcareous shales and sandstones of rolling uplands and foothills, generally on slope shoulders. Except for accidentals of <i>Pseudotsuga menziesii</i> and very scattered <i>Juniperus scopulorum, Pinus ponderosa</i> is the only tree present, with somewhat stunted specimens comprising between 40% and 70% canopy cover. The undergrowth is rather depauperate in species diversity. <i>Juniperus horizontalis</i> is always the dominant species but varies enormously in cover, from 10-70% (even greater cover noted in reconnaissance). <i>Juniperus communis</i> can also attain high cover values but is not consistently present. <i>Rhus trilobata</i> and <i>Artemisia tridentata ssp. wyomingensis</i> are highly constant but seldom comprise more than 5% cover. There is a strong difference between the stands in the Little Rocky Mountains, which have a very depauperate graminoid cover, and those of northeastern Montana wherein <i>Pseudoroegneria spicata</i> and <i>Pascopyrum smithii</i> can attain canopy covers of greater than 30%. The forb component seldom has more than a trace amount of any species; those with the greatest constancy are <i>Solidago missouriensis, Thermopsis rhombifolia</i>, and <i>Linum perenne</i>. Structurally and compositionally this association is similar to both ~<i>Pinus ponderosa / Juniperus communis</i> Woodland (CEGL000859)$$ and ~<i>Pinus flexilis / Juniperus communis</i> Woodland (CEGL000807)$$. |
Comm #11730
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V.A.9.N
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accession code: VB.CC.243.VA9N
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EcoArt 2002 |
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