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Name
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Reference
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Plots↓
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Description |
Comm #10711
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Pinus edulis / Bouteloua curtipendula Woodland
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accession code: VB.CC.33287.CEGL000777
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Western Ecology Working Group of... |
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From Muldavin et al. (2000b): This is a provisional type in the Southwest and a minor type on White Sands Missile Range (four plots). It is known from both escarpment and dipslopes of moderate to warm aspects at elevations of 1670 to 2390 m (5500-7500 feet). Stands are characterized by an open canopy of <i>Pinus edulis</i> and <i>Juniperus monosperma</i>, with a grassy understory dominated by <i>Bouteloua curtipendula</i> and occasionally codominated by <i>Aristida purpurea</i>. |
Comm #10712
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CEGL007598
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accession code: VB.CC.7210.CEGL007598
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EcoArt 2002 |
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Comm #10713
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Abies concolor - Picea breweriana / Gaultheria ovatifolia / Orthilia secunda Forest
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accession code: VB.CC.34340.CEGL000051
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Western Ecology Working Group of... |
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This association is a rare, mixed-conifer community located on cool, wet sites and codominated by the regional endemic <i>Picea breweriana</i>. This association is restricted to the Klamath-Siskiyou region at elevations of 1220-1525 m (4000-5000 feet). Aspects are variable with slopes ranging from 16-47%. Sites are characterized by concave topography on schist and mixed metamorphic parent material. <i>Abies concolor, Picea breweriana</i>, and <i>Pinus lambertiana</i> codominate the tree canopy with 17%, 17%, and 11% cover, respectively. <i>Gaultheria ovatifolia, Chimaphila umbellata</i>, and <i>Vaccinium parvifolium</i> are important understory components, each supporting about 8% cover. |
Comm #10714
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Picea sitchensis / Rubus spectabilis Forest
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accession code: VB.CC.33269.CEGL000060
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Western Ecology Working Group of... |
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Comm #10715
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Pinus edulis - Juniperus osteosperma / Coleogyne ramosissima Woodland
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accession code: VB.CC.33305.CEGL000781
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Western Ecology Working Group of... |
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This woodland association has been described from valley bottoms, terraces, benches, slopes, mesa rims, elevated plains and rolling terrain sometimes interrupted by bedrock. It occurs extensively across the Colorado Plateau from southwestern Colorado through southern Utah into Arizona and probably also Nevada. Sites are on flat to moderate slopes (0-20%) between 1070 and 1890 m (3500-6200 feet) elevation on all aspects. Bare soil covers most of the unvegetated surface, although cryptogam cover can be as high as 45%. Soils are typically shallow, rocky sandy loams derived from sandstone, eolian sands, alluvium or limestone. A few stands occur on deep or clay-textured soils derived from shale. Stands of this association can vary greatly in appearance, ranging from sparsely vegetated (<10% total cover) to relatively dense (80% cover). Sparsely vegetated stands also tend to have dwarfed trees not exceeding 2 m in height. Typically, stands have an open (5-25% cover) tree canopy 3-6 m tall that contains both <i>Pinus edulis</i> and <i>Juniperus osteosperma</i>, although one or the other tree may dominate. The shrub layer has 5 to 55% cover and is dominated by <i>Coleogyne ramosissima</i>. In Arizona, <i>Mortonia sempervirens</i> may be codominant. Other common shrub species may include <i>Agave utahensis, Cercocarpus montanus, Ephedra viridis, Glossopetalon spinescens var. aridum (= Glossopetalon nevadense), Glossopetalon spinescens , Gutierrezia sarothrae, Opuntia polyacantha, Purshia stansburiana, Quercus turbinella, Yucca baccata, Yucca harrimaniae</i>, and <i>Yucca elata var. utahensis (= Yucca utahensis)</i>. The sparse herbaceous layer is composed of graminoids such as <i>Achnatherum hymenoides, Achnatherum speciosum (= Stipa speciosa), Elymus elymoides, Poa fendleriana, Bouteloua curtipendula</i>, and <i>Aristida</i> species. <i>Bromus rubens, Bromus tectorum</i>, and <i>Vulpia octoflora</i> may be present to abundant in disturbed sites. Forbs are typically variable and scattered, contributing little cover. <i>Lappula occidentalis, </i><i>Lepidium montanum, Chaenactis stevioides, Psilostrophe sparsiflora</i>, and <i>Streptanthella longirostris</i> are among the many species that have been recorded. Scattered cacti are often present, including <i>Opuntia erinacea, Opuntia phaeacantha, Opuntia polyacantha, Echinocereus triglochidiatus</i>, and <i>Echinocereus engelmannii</i>. |
Comm #10716
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Pinus edulis / Festuca arizonica Woodland
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accession code: VB.CC.32868.CEGL000783
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Western Ecology Working Group of... |
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Comm #10717
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Pseudotsuga menziesii / Lithocarpus densiflorus / Quercus chrysolepis Forest
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accession code: VB.CC.33032.CEGL000076
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Western Ecology Working Group of... |
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Comm #10718
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Pseudotsuga menziesii - Sequoia sempervirens / Polystichum munitum Forest
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accession code: VB.CC.32988.CEGL000081
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Western Ecology Working Group of... |
0
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This giant conifer forest is found near the northern distributional limit of <i>Sequoia sempervirens</i>. <i>Sequoia sempervirens</i> and <i>Pseudotsuga menziesii</i> dominate the tall canopy of these coastal fog-belt forests. This association occurs on intermediate to mesic sites, usually with a northern or eastern aspect. Slopes are relatively low (5-10°). Tree cover is 55-75%. Soils are fine-textured, with good moisture-holding capacity, well-drained and relatively deep, derived from silt or sandstone. Individuals of <i>Sequoia sempervirens</i> tend to be highly scattered except in the most moist sites where it is dominant to <i>Pseudotsuga menziesii</i>. <i>Sequoia sempervirens</i> often supports most of the basal area on a site. <i>Tsuga heterophylla</i> very rarely codominates. Shrub cover is variable (10-80%) and consists primarily of <i>Vaccinium ovatum</i>. Herb cover varies from 30-70% and is most often characterized by <i>Oxalis oregana, Trillium ovatum, Polystichum munitum</i>, and <i>Galium</i> spp. Other tree species which may be common are <i>Umbellularia californica, Alnus rubra, Lithocarpus densiflorus</i>, and <i>Acer macrophyllum</i>, which when present form a secondary canopy below the giant conifers. Occasionally, this type occurs in a matrix with ~<i>Pseudotsuga menziesii - Sequoia sempervirens / Rhododendron macrophyllum / Vaccinium ovatum</i> Forest (CEGL000082)$$. |
Comm #10719
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Tsuga heterophylla / Vaccinium membranaceum / Linnaea borealis Forest
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accession code: VB.CC.32287.CEGL000119
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Western Ecology Working Group of... |
0
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Comm #10720
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Tsuga heterophylla / Vaccinium membranaceum / Xerophyllum tenax Forest
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accession code: VB.CC.32347.CEGL000120
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Western Ecology Working Group of... |
0
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