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Populus tremuloides - Betula papyrifera Forest Alliance | Midwestern Ecology Working Group...
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Name: Populus tremuloides - Betula papyrifera Forest Alliance Reference: Midwestern Ecology Working Group... Description: This alliance, found in the north-central United States and Canada has a tree canopy that is predominantly or completely composed of deciduous trees. This alliance is defined as containing a mixture of Populus tremuloides and Betula papyrifera. The abundance of each can range from 10-90%. A few sites may be dominated by Acer rubrum or Populus grandidentata with lesser amounts of Populus tremuloides and Betula papyrifera. Other trees may be found in minor amounts in the canopy but are often dominant in the sapling layer. These include Abies balsamea, Acer saccharum, Betula alleghaniensis, Fagus grandifolia (in the eastern portion of this alliance's range), Picea glauca, Quercus rubra, and Tilia americana. The density of the shrub layer varies inversely with the density of the canopy and subcanopy trees. Dry-mesic stands tend to have higher shrub cover. Most common shrubs are 1-2 m tall. Typical species of this layer include Acer spicatum, Amelanchier spp., Corylus cornuta, Diervilla lonicera, Prunus spp., Rosa acicularis, and Rubus pubescens. The herbaceous layer is often very diverse. Aralia nudicaulis, Eurybia macrophylla (= Aster macrophyllus), Clintonia borealis, Cornus canadensis, Galium triflorum, Maianthemum canadense, Pteridium aquilinum, and Trientalis borealis are abundant members of the herbaceous layer. Stands of this alliance are typically early successional and become established on a variety of landscape positions. They have been found on moderately well-drained to very well-drained clay, loam, and sand soils. Stands can be found on ridgetops, upper, mid, and lower slopes with gentle to moderate slopes and on flat plains.  Accession Code: VB.CC.22663.POPULUSTREMULOI Plot-observations of this Community Concept: 0
	Party Perspective according to: NatureServe (organization) Perspective from: 26-Nov-1997 to: 01-May-2019
	status: accepted This Community's Level: Alliance This Community's Children: [none]		Names:   Scientific: Populus tremuloides - Betula papyrifera Forest Alliance   Translated: Quaking Aspen - Paper Birch Forest Alliance   UID: HIGHER_CLASS_UNIT.2.126604 NatureServe Explorer   Code: A.269