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Betula papyrifera - Picea glauca / Acer spicatum - Alnus viridis / Polypodium virginianum Talus Shrubland | NatureServe Biotics 2019
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Name: Betula papyrifera - Picea glauca / Acer spicatum - Alnus viridis / Polypodium virginianum Talus Shrubland Reference: NatureServe Biotics 2019 Description: This paper birch - white spruce talus scrub shrubland is found in the northern Great Lakes region of the United States and Canada. The following description is based on its occurrence at Isle Royale National Park, Michigan. This community occupies steep to very steep talus slopes at the base of basalt cliffs facing northwest. This talus scrub type is an open canopy, mixed evergreen and deciduous shrubland. Stands occur on steep to very steep talus slopes at the base of basalt cliffs facing northwest. Canopy cover of trees over 5 m tall is typically 30-50% cover. The most abundant trees are <i>Betula papyrifera</i> and <i>Picea glauca</i>. Cover of tall shrubs varies from 10-70% cover; the most abundant tall shrubs are <i>Acer spicatum</i> and <i>Alnus viridis</i>. Cover of short shrubs (including dwarf-shrubs) varies from 5-40%; the most abundant low shrubs are <i>Taxus canadensis</i> and <i>Rubus pubescens</i>. Herbs usually have about 30-40% cover; the most abundant herbs are <i>Polypodium virginianum</i> and <i>Dryopteris expansa</i>. Cover of nonvascular plants is usually about 30-40%; mosses, such as <i>Pleurozium schreberi</i> and foliose lichens are common in the ground layer.  Accession Code: urn:lsid:vegbank.org:commConcept:34015-{45E53A08-11CE-45CC-B81D-D3C07C2C05CD} Plot-observations of this Community Concept: 0
	Party Perspective according to: NatureServe (organization) Perspective from: 06-May-2010 to: ongoing
	status: accepted Community's Parent: Eastern Boreal & Subboreal Acidic Talus Alliance This Community's Level: Association This Community's Children: [none]		Names:   UID: ELEMENT_GLOBAL.2.686955 NatureServe Explorer   Code: CEGL005252   Translated: Paper Birch - White Spruce / Mountain Maple - Green Alder / Rock Polypody Talus Shrubland   Common: Northern Basalt - Diabase Talus Scrub   Scientific: Betula papyrifera - Picea glauca / Acer spicatum - Alnus viridis / Polypodium virginianum Talus Shrubland (convergence) and Synonyms: (similar) Betula papyrifera - Picea glauca / Acer spicatum - Alnus viridis / Polypodium virginianum Talus Shrubland