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Pinus ponderosa Mesic Black Hills Forest Alliance | NatureServe Biotics 2019
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Name: Pinus ponderosa Mesic Black Hills Forest Alliance Reference: NatureServe Biotics 2019 Description: This forest and woodland alliance occurs on mesic-wet sites at montane and foothill elevations in the Black Hills and isolated mountains such as Bear's Paw Mountains in the northwestern Great Plains. Stands are primarily dominated by <i>Pinus ponderosa</i> but may include a sparse to relatively dense subcanopy of <i>Juniperus scopulorum</i>. Deciduous trees such as <i>Acer negundo, Betula papyrifera, Crataegus succulenta, Fraxinus pennsylvanica, Quercus macrocarpa, Populus tremuloides</i>, and <i>Ulmus americana</i> are an important component in some areas, especially mesic draws and swales, and are sometimes codominant with the pines. The shrub layer is moderately dense to dense with characteristic species that include <i>Amelanchier alnifolia, Physocarpus monogynus, Prunus virginiana, Symphoricarpos occidentalis</i>, and <i>Toxicodendron rydbergii</i>. The herbaceous layer ranges from moderately dense to dense with moderate species diversity. Species such as <i>Antennaria rosea, Apocynum androsaemifolium, Carex inops ssp. heliophila, Cerastium arvense, Elymus caninus, Galium boreale, Maianthemum stellatum, Pulsatilla patens</i>, and <i>Schizachne purpurascens</i> are typical components of the herbaceous layer. Mosses and lichens are usually present. These mesic forests and woodlands are found on gentle to moderate (2-40%), cool north-facing slopes and frequently occur close to streams. A few stands are on rolling uplands. The soils are variable but are often sandy loams or loams derived from limestone and sandstone.  Accession Code: urn:lsid:vegbank.org:commConcept:38750-{16412439-A4AC-485B-B2E3-992BA4673026} Plot-observations of this Community Concept: 0
	Party Perspective according to: NatureServe (organization) Perspective from: 08-Jan-2014 to: ongoing
	status: accepted Community's Parent: Pinus ponderosa Northwestern Great Plains Forest & Woodland Group This Community's Level: Alliance This Community's Children: Show/Hide   Pinus ponderosa / Amelanchier alnifolia Woodland   Pinus ponderosa / Physocarpus monogynus Forest   Pinus ponderosa / Prunus virginiana Forest   Pinus ponderosa / Symphoricarpos occidentalis Forest   Populus tremuloides / Prunus virginiana Forest		Names:   UID: ELEMENT_GLOBAL.2.899588 NatureServe Explorer   Code: A3465   Translated: Ponderosa Pine Mesic Black Hills Forest Alliance   Common: Black Hills Ponderosa Pine Mesic Forest   Scientific: Pinus ponderosa Mesic Black Hills Forest Alliance