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Reference
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Description |
Comm #11651
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Prosopis glandulosa - Artemisia filifolia / Sporobolus giganteus Shrubland
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accession code: VB.CC.35505.CEGL002192
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Southeastern Ecology Working Gro... |
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This association consists of deciduous shrublands over sandy soils in the Trans-Pecos of western Texas. <i>Larrea tridentata, Yucca elata, Psorothamnus scoparius, Aristida</i> spp., <i>Sporobolus</i> spp., <i>Penstemon ambiguus, Heliotropium convolvulaceum, Abronia</i> spp., <i>Poliomintha</i> spp., and <i>Croton</i> spp. are common components. These shrublands often occur intermixed with xeromorphic shrublands. |
Comm #11652
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Asociación Berberis rariflora - Polylepis tomentella
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accession code: urn:lsid:vegbank.org:commConcept:36792-{7092B639-02BC-467F-ABDB-110F5AC441D1}
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NatureServe Biotics 2019 |
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2800-2900 hasta 3500-3600 m. Supratropical pluviestacional subhúmedo inferior. Combinación florística diferencial: <i>Azara salicifolia, Berberis rariflora, Berberis chrysacantha, Colletia spinosissima, Eupatorium buniifolium, Kageneckia lanceolata, Polylepis tomentella ssp. incanoides, Polylepis tomentella ssp. nana</i> y <i>Schinus microphyllus</i>. Mayores áreas potenciales y/o actuales conocidas: Cocha-bamba: Epizana-Totora y Vacas. |
Comm #11653
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Andropogon gerardii - Schizachyrium scoparium Northern Plains Herbaceous Vegetation
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accession code: VB.CC.37054.CEGL002205
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Midwestern Ecology Working Group... |
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This bluestem tallgrass prairie type is found in the unglaciated regions of the northwestern Great Plains of the United States. Stands occur on lower slopes and bottomlands of narrow gullies and draws. It requires more moisture than is generally provided by direct precipitation. The extra water comes from runoff from upslope areas and meltwater from snow which often accumulates in drifts on this community. The soil is loam to sandy loam and moderately deep to deep. The vegetation is dominated by moderately dense to dense tall and mid grasses. Most of the species are 0.7-1.5 m tall. Common grasses are <i>Andropogon gerardii, Bouteloua curtipendula, Schizachyrium scoparium, Sporobolus heterolepis</i>, and <i>Hesperostipa spartea (= Stipa spartea)</i>. Other grasses that may occur include <i>Elymus trachycaulus, Carex pensylvanica</i>, and <i>Panicum virgatum</i>. Forbs, such as <i>Artemisia ludoviciana, Echinacea angustifolia, Helianthus pauciflorus ssp. pauciflorus, Helictotrichon hookeri, Juncus balticus, Liatris scariosa</i>, and <i>Lilium philadelphicum</i>, are common. Shrubs, especially <i>Symphoricarpos occidentalis</i>, are often present but never abundant. |
Comm #11654
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Schizachyrium littorale - Paspalum monostachyum Herbaceous Vegetation
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accession code: VB.CC.35060.CEGL002207
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Southeastern Ecology Working Gro... |
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This association is the predominant grassland on the Ingleside barrier-strandplain and barrier islands of the Texas Coastal Bend. It also occurs on the upper Texas coast (Follets Island). In addition to <i>Schizachyrium littorale</i> and <i>Paspalum monostachyum</i>, common components include <i>Heteropogon contortus, Paspalum plicatulum, Trichoneura elegans, Andropogon gerardii, Sorghastrum nutans, Bothriochloa saccharoides, Muhlenbergia capillaris, Dichanthelium</i> spp., and <i>Elionurus tripsacoides</i>. Minor changes in drainage can cause differences in species composition. On the Ingleside barrier-strandplain, while <i>Paspalum monostachyum</i> may dominate slightly lower areas [see ~<i>Paspalum monostachyum - Andropogon glomeratus - Schizachyrium littorale - Iva texensis</i> Herbaceous Vegetation (CEGL007222)$$], deeper swales are typically dominated by <i>Panicum virgatum</i> and <i>Spartina patens</i> and are classified as ~<i>Spartina patens - Fimbristylis (caroliniana, castanea) - (Panicum virgatum)</i> Herbaceous Vegetation (CEGL007836)$$. In this area, these grasslands occur intermixed with ~<i>Quercus fusiformis - Persea borbonia</i> Forest (CEGL002117)$$. Other components on the barrier-strandplain include <i>Baptisia bracteata var. leucophaea, Dichanthelium acuminatum var. fasciculatum (= Dichanthelium lanuginosum), Phlox drummondii, Rhynchosia americana, Sida lindheimeri, Stemodia lanata</i>, and <i>Stylisma villosa</i>. In addition to the nominals, barrier flat communities include <i>Spartina patens, Trachypogon spicatus (= Trachypogon secundus), Muhlenbergia capillaris, Rhynchosia americana, Galactia canescens, Helianthus argophyllus</i>, and <i>Physalis walteri</i>. Here, poorly drained areas may support inclusions of <i>Spartina spartinae</i> or <i>Spartina patens</i>. |
Comm #11655
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Tsuga heterophylla - Thuja plicata - Chamaecyparis nootkatensis / Gaultheria shallon / Blechnum spicant Forest
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accession code: VB.CC.37356.CEGL002776
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Located within a hypermaritime climate along the windward outer coast from sea level to 600 m elevation, this community follows the mainland British Columbia coast from beyond the tip of northern Vancouver Island northwest to Portland Canal and into the Queen Charlotte Islands. It can be found on essentially all slope positions from lower to upper slopes and crests. Soils range from freely or imperfectly drained organic material to moderately poorly drained mineral soils with low oxygen (reducing) conditions, to peaty organics on coastal lowlands.<br><br>A relatively open canopy, visually busy structural complexity, and high floristic diversity are characteristic of this community. <i>Thuja plicata</i> (average 38% canopy cover) with variable lesser amounts of <i>Chamaecyparis nootkatensis (= Callitropsis nootkatensis)</i> (average 25% canopy cover) and <i>Pinus contorta var. contorta</i> tend to dominate the upper strata of the moderately open 20- to 25-m tall canopy. Prevalent shrub-layer species include <i>Tsuga heterophylla</i> and <i>Tsuga mertensiana</i>, as well as all the above conifers, <i>Menziesia ferruginea, Vaccinium parvifolium, Vaccinium ovalifolium (= Vaccinium alaskense)</i>, and <i>Gaultheria shallon</i>. The herb layer includes <i>Cornus canadensis, Maianthemum dilatatum, Listera caurina, Rubus pedatus, Veratrum viride, Streptopus amplexifolius, Linnaea borealis</i>, and even scattered <i>Lysichiton americanus</i>. Characteristic species in the well-developed moss layer include <i>Rhytidiadelphus loreus, Hylocomium splendens, Sphagnum</i> spp., <i>Dicranum majus</i>, and a wide variety of liverworts and lichens. The presence of scattered <i>Pinus contorta var. contorta</i>, as a conspicuous emergent several meters taller than the main canopy layer conifers, is a characteristic of this association (5-10% cover in one-third of the plots). Other distinguishing features include the scrubby structural complexity, high floristic diversity, and the presence of small amounts of <i>Lysichiton americanus</i>. |
Comm #11656
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Abies concolor / Galium triflorum Woodland
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accession code: VB.CC.18924.ABIESCONCOLORGA
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Western Ecology Working Group of... |
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Comm #11657
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Schizachyrium scoparium - Sorghastrum nutans - Andropogon gerardii - Lespedeza capitata Sand Herbaceous Vegetation
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accession code: VB.CC.35962.CEGL002210
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Midwestern Ecology Working Group... |
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This dry-mesic sand bluestem prairie community is found in the upper midwestern United States and adjacent Canada. Stands occur on flat to moderately sloping sites with sand, loamy sand, or, rarely, sandy loam soils. The deep, well-drained soils formed from eolian sand, glacial outwash, old dunes, alluvium, or sandy glacial lakeplains. Sparse to moderately dense mid and tall grasses dominate the community. Forbs do not contribute greatly to vegetation cover but forb diversity is generally moderate to high. The most abundant species in this community are <i>Andropogon gerardii, Carex</i> spp., <i>Schizachyrium scoparium, Sorghastrum nutans</i>, and <i>Hesperostipa spartea (= Stipa spartea)</i>. Other common species include <i>Liatris aspera, Lespedeza capitata, Lithospermum caroliniense, Symphyotrichum ericoides (= Aster ericoides)</i>, and <i>Dalea villosa</i>. Woody species tolerant of dry conditions, such as <i>Salix humilis, Populus tremuloides</i>, and <i>Acer rubrum</i>, are sometimes found in this community. |
Comm #11658
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Schizachyrium scoparium - Sorghastrum nutans - Andropogon ternarius - Coreopsis grandiflora Sandstone - Shale Herbaceous Vegetation
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accession code: VB.CC.35961.CEGL002212
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Midwestern Ecology Working Group... |
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This bluestem sandstone/shale prairie community is found in the central-western tallgrass region of the midwestern United States. Stands occur on gentle to steep slopes of plains, hills, and ridges. Soils are well-drained to somewhat rapidly drained and very shallow to moderately deep (0-100 cm). The parent material is sandstone or shale. The soil is often intermixed with rock fragments or sandstone bedrock, some of which may be exposed at the surface. The vegetative structure of this midgrass prairie is composed of a single layer of dominant graminoids intermixed with abundant forbs. Shrubs may be present; mosses are often common. <i>Schizachyrium scoparium, Sorghastrum nutans</i>, and <i>Sporobolus heterolepis</i> are the dominant species. Many other species may be present, including <i>Andropogon ternarius, Astragalus distortus, Agrostis elliottiana, Liatris pycnostachya, Sabatia campestris, Solidago speciosa, Triodanis leptocarpa, Viola sagittata</i>, and <i>Viola pedata</i>. |
Comm #11659
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Sabal palmetto - Quercus virginiana - Ficus aurea / Acrostichum danaeifolium - Nephrolepis exaltata Swamp Forest
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accession code: urn:lsid:vegbank.org:commConcept:33199-{921F2E5B-FDB7-4965-BB72-ADAC20DBEB94}
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NatureServe Biotics 2019 |
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This plant association comprises hydric hammocks of coastal peninsular Florida, with some tropical components. Hydric hammocks typically form where deep groundwater seeps slowly from limestone outcrops. This vegetation is characterized by a diverse canopy, usually composed of a combination of temperate elements (e.g., <i>Sabal palmetto, Quercus virginiana, Quercus laurifolia, Magnolia virginiana, Ulmus americana</i>, etc.) with tropical ones such as <i>Ficus aurea</i>. Some characteristic tropical understory components include <i>Acrostichum danaeifolium</i> and <i>Nephrolepis exaltata</i>. |
Comm #11660
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Carex spp. - Triglochin maritima - Eleocharis quinqueflora Marl Fen Herbaceous Vegetation
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accession code: VB.CC.37053.CEGL002268
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Midwestern Ecology Working Group... |
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This community type is found in the northeastern and north-central Great Plains. This community is found in localized areas where mineral-rich groundwater flow emerges at the ground's surface. These areas remain saturated throughout the growing season, permitting the development of organic peat. These communities may have small pools which have precipitates of calcium carbonate and other minerals. These pools are often surrounded by fine-textured, short-statured vegetation such as <i>Eleocharis quinqueflora (= Eleocharis pauciflora), Rhynchospora capillacea, Lobelia kalmii</i>, and <i>Parnassia palustris</i>. There are also areas of taller vegetation such as <i>Carex prairea, Schoenoplectus pungens (= Scirpus pungens)</i>, and <i>Carex aquatilis</i>. |
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