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Name
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Reference
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Plots↓
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Description |
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Avena barbata Semi-natural Association
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accession code:
NOT CURRENTLY ACCEPTED
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MCV2 |
1
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Comm #4651
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Pinus echinata / Liquidambar styraciflua - Quercus (stellata, margarettiae) / Schizachyrium scoparium Managed Forest
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accession code: VB.CC.34808.CEGL003760
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Southeastern Ecology Working Gro... |
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This intensively managed <i>Pinus echinata</i> vegetation occurs in the Upper West Gulf Coastal Plain of Texas, and almost certainly occurs in other areas as well. These are mature stands maintained by infrequent to regular winter burning. Stands managed with less frequent fire (the majority of existing areas) have a dense 2-m tall layer of saplings and shrubs, while more frequently burned areas (presumably replicating more natural conditions) are more herbaceous-dominated. Understory conditions in any given stand may fluctuate temporally given changes to the fire management regime. Other silvicultural operations, especially thinning, have usually occurred, and in many cases hardwood density has been heavily diminished in both the overstory and subcanopy. <i>Pinus taeda</i> stems are usually selected against during thinning operations as well, especially within Red-cockaded Woodpecker (<i>Picoides borealis</i>) management areas. |
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Bromus hordeaceus – Erodium (botrys) – Plagiobothrys fulvus Association
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accession code:
NOT CURRENTLY ACCEPTED
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MCV2 |
1
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Comm #4652
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EPHEDRA SPP. SHRUBLAND ALLIANCE
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accession code: VB.cc.30033.EPHEDRASPPSHRUB
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NVC 2004 |
1
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Comm #4653
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LYRITHRIUM SEASONALLY FLOODED HERBACEOUS ALLIANCE
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accession code: VB.cc.30133.LYRITHRIUMSEASO
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NVC 2004 |
1
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Comm #4654
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Carex vernacula Wet Meadow
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accession code: urn:lsid:vegbank.org:commConcept:30777-{B0A5A753-5166-44A9-9938-C33AAC371782}
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NatureServe Biotics 2019 |
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This wetland occurs along narrow and sinuous stream channels in gently sloping, glaciated, alpine basins. <i>Carex vernacula</i> dominates the vegetation cover with <i>Caltha leptosepala</i> and <i>Deschampsia cespitosa</i> as common subdominants. |
Comm #4655
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Carex illota Wet Meadow
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accession code: urn:lsid:vegbank.org:commConcept:30785-{86EF497F-BA79-4F5A-8798-5776AA240089}
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NatureServe Biotics 2019 |
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This association is found in small patches on lakeshores, near springs, and below snowpatches in the lower alpine and on mountain valley floors in the subalpine Rocky Mountains of Colorado and northwestern Wyoming. Sites are flat to gently sloping, stable and snow-covered in winter. Aspect is variable. Surface water is present for extended periods during the growing season but is absent by the end of the growing season in most years. Substrates vary from loess, with accumulations of organic matter, to moderately well-drained silty clay soils predominantly covered by litter and duff and rocks greater than 10 cm. Soil surface may have significant cover of bare soil, gravel, mosses, and lichens. The vegetation is characterized by a dense to moderately dense herbaceous layer dominated by <i>Carex illota</i> (alpine stands are often nearly a monoculture) with 20-70% cover (typically >50%). <i>Antennaria umbrinella, Caltha leptosepala, Castilleja rhexiifolia, Deschampsia cespitosa, Eleocharis quinqueflora, Packera dimorphophylla, Primula parryi, Pedicularis groenlandica, Phleum alpinum</i>, or <i>Saxifraga odontoloma</i> may have significant cover (1-30%), but often the cover of other graminoids and forbs is low ( usually less than 1%). The shrub <i>Salix planifolia</i> may also be present with less than 1% cover. The nonvascular layer is highly developed and almost equally as abundant as the vascular cover. <i>Picea engelmannii</i> seedlings (subalpine stands) and <i>Vaccinium scoparium</i> may be present within the dwarf-shrub stratum in trace quantities (<1% cover). Adjacent wetter sites may be dominated by <i>Carex aquatilis, Carex scopulorum, Caltha leptosepala</i>, or <i>Eleocharis palustris</i>. Adjacent upland vegetation is dominated by <i>Deschampsia cespitosa, Salix planifolia</i>, or <i>Abies lasiocarpa - Pinus albicaulis</i> forest (subalpine stands). |
Comm #4656
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Festuca idahoensis - Carex filifolia Grassland
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accession code: urn:lsid:vegbank.org:commConcept:30807-{32476D0A-A042-401E-A070-0FFA89A6EDFC}
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NatureServe Biotics 2019 |
1
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This montane grassland association occurs in the mountains of western Montana and north-central Wyoming. Stands are found infrequently on gentle terrain (5-20% slope) in or near mountain saddles or on alluvial fans. Elevation ranges from 1280-2800 m (4200-9200 feet). Soils are rapidly drained and have coarse textures. The vegetation has a dense and diverse herbaceous layer codominated by medium-tall perennial graminoids and perennial forbs. The dominant species are <i>Festuca idahoensis, Carex filifolia, Danthonia intermedia, Geum triflorum, Gentiana affinis, Antennaria rosea</i>, and <i>Achillea millefolium</i>. The lack of <i>Pseudoroegneria spicata, Pascopyrum smithii</i>, or <i>Elymus caninus</i> as a codominant species makes this association distinct. |
Comm #4657
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AMSINCKIA HERBACEOUS ALLIANCE
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accession code: VB.cc.29822.AMSINCKIAHERBAC
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NVC 2004 |
1
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Comm #4658
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Nuphar polysepala Aquatic Vegetation
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accession code: urn:lsid:vegbank.org:commConcept:30910-{F1393F47-2D4F-4241-9D21-993166EA7866}
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NatureServe Biotics 2019 |
1
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This association is composed of floating aquatic vegetation. It occurs on permanently flooded ponds, lakes, deeper beaver ponds, and glacial kettle lakes, from sea level to 2410 m (7900 feet) in elevation. Soils are usually organic Histosols, on anoxic muck or peat. Water depths range from 40 to 200 cm (1.25-6.5 feet). Stands have been observed where water levels fluctuate seasonally, leaving <i>Nuphar</i> high and dry on exposed mudflats, especially in drought years. Stands can completely fill smaller ponds, or occurrences may be only as large as the water depth allows, and are part of a larger mosaic of other freshwater emergent marsh communities. <i>Nuphar polysepala</i> is often the only species present. Cover is continuous, intermittent, or open. Other aquatic and emergent herbs present may include <i>Menyanthes</i> spp., <i>Potamogeton</i> spp., <i>Glyceria</i> spp., <i>Eleocharis</i> spp., <i>Carex</i> spp., <i>Equisetum</i> spp., <i>Typha</i> spp., and <i>Lemna</i> spp. Many of these associates are in shallower, adjacent water. |
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