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Name
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Reference
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Description |
Comm #10691
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I.A.5.N.b
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accession code: VB.CC.668.IA5NB
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EcoArt 2002 |
0
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Comm #10692
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Abies concolor - Pinus ponderosa / Symphoricarpos spp. Forest
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accession code: VB.CC.34471.CEGL000018
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Western Ecology Working Group of... |
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This forest is found in southern Oregon's Klamath-Siskiyou region and eastern Cascades and may extend into adjacent California. Elevations are between 1300-2165 m (4260-7100 feet), on all aspects, and a variety of slopes (5-70%). Parent material is typically igneous but also occasionally serpentine overlain by gravelly or sandy mantles. The overstory is dominated by <i>Abies concolor</i> (5-50% cover), <i>Pinus ponderosa</i> (5-50% cover), and sometimes <i>Pseudotsuga menziesii</i> (27% cover). The shrub layer is typified by <i>Symphoricarpos mollis</i> (11% cover), <i>Holodiscus discolor</i> (6% cover), and <i>Rosa gymnocarpa</i> (3% cover). Stands in the eastern Cascades have only snowberry (<i>Symphoricarpos mollis</i> and <i>Symphoricarpos albus</i>) covering 0-30%. Herbs are lacking in the Klamath-Siskiyou, but in the Cascades common species include <i>Arnica</i> sp. (0-30% cover), <i>Poa wheeleri</i> (0-20% cover), and <i>Carex inops ssp. heliophila</i> (0-10% cover). Fires maintain <i>Pinus ponderosa</i> while limiting <i>Abies concolor</i>. This community is warmer and drier than most <i>Abies concolor</i> associations. |
Comm #10693
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Abies concolor - Pseudotsuga menziesii / Mahonia nervosa Forest
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accession code: VB.CC.34530.CEGL000019
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Western Ecology Working Group of... |
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Comm #10694
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Abies concolor - Pseudotsuga menziesii / Mahonia aquifolium Forest
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accession code: VB.CC.34193.CEGL000020
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Western Ecology Working Group of... |
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Comm #10695
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Abies concolor - Pseudotsuga menziesii / Holodiscus discolor Forest
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accession code: VB.CC.34401.CEGL000021
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Western Ecology Working Group of... |
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Comm #10696
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Abies concolor - Pseudotsuga menziesii / Whipplea modesta Forest
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accession code: VB.CC.34528.CEGL000022
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Western Ecology Working Group of... |
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Comm #10697
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Abies concolor / Symphoricarpos albus Forest
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accession code: VB.CC.34452.CEGL000026
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Western Ecology Working Group of... |
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Comm #10698
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Abies grandis / Chrysolepis chrysophylla Forest
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accession code: VB.CC.34704.CEGL000038
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Western Ecology Working Group of... |
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This mixed conifer association occurs on the eastern slope of the Oregon Cascades and is most often found on north-facing slopes between 1025-1350 m elevation. The moderate elevation make sites warmer and drier than most other <i>Abies grandis</i> associations. Soils are derived from volcanic ash and basalt parent materials and the surface layers are especially deep fine, sandy loams. The tree canopy is codominated by <i>Pseudotsuga menziesii</i> and <i>Abies grandis</i>, each of which attain about 22% cover. <i>Abies grandis</i> trees have grown in older stands following the advent of fire suppression earlier this century. <i>Pinus ponderosa</i> is also common but averages only 15% cover. <i>Pinus contorta</i> is abundant in fire initiated stands less than 100 years of age. The north-facing aspects moderate the moisture and temperature enough to allow occasional individuals of <i>Larix occidentalis</i> an <i>Pinus monticola</i> to grow despite being near the limits of their physiological tolerance. The dominant shrubs are <i>Chrysolepis chrysophylla (= Castanopsis chrysophylla)</i> and <i>Symphoricarpos mollis</i> (or <i>Symphoricarpos albus</i>), each averaging about 5% cover. <i>Rosa gymnocarpa</i> and <i>Chimaphila umbellata</i> are also common. <i>Acer circinatum</i> is infrequent but may occur in large patches. <i>Linnaea borealis</i> is common in the herbaceous layer and may be extensive; it is often accompanied by <i>Achlys triphylla</i> and other herbs. Known stands are located in areas where heavy grazing by sheep occurred in the early 1900s. The floristics of this association may still be influenced by the selective overgrazing and soil compaction that occurred at that time. This association has more shrub cover, especially by <i>Chrysolepis chrysophylla</i>, than either ~<i>Abies grandis / Linnaea borealis</i> Forest (CEGL000275)$$ or ~<i>Abies grandis - Pseudotsuga menziesii / Trientalis borealis ssp. latifolia</i> Forest (CEGL000040)$$. |
Comm #10699
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Fraxinus quadrangulata - Quercus macrocarpa / Arundinaria gigantea ssp. gigantea Wooded Shrubland
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accession code: VB.CC.35938.CEGL003835
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Southeastern Ecology Working Gro... |
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This association occurred historically in Kentucky's Bluegrass Region. <i>Quercus muehlenbergii</i> codominates with <i>Quercus macrocarpa</i>, and the combined cover of these two species is greater than 67% of total canopy cover. This open vegetation is related in composition, local landscape context, and distribution to a similar association in ~<i>Quercus muehlenbergii - Fraxinus quadrangulata - Juniperus virginiana</i> Woodland Alliance (A3273)$$. |
Comm #10700
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Pinus contorta / Purshia tridentata Woodland
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accession code: VB.CC.33153.CEGL000765
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Western Ecology Working Group of... |
0
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