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Pinus strobus Forest Alliance | Midwestern Ecology Working Group...
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Name: Pinus strobus Forest Alliance Reference: Midwestern Ecology Working Group... Description: This alliance, found near the Great Lakes and in the southern Appalachian Mountains and northeastern United States, is composed of dry-mesic to mesic pine forests. Stands of this alliance are characterized by a moderate to complete tree canopy. The shrub layer is absent to well-developed, while the herbaceous layer is moderately to poorly developed. Understory vegetation is sparse where the canopy is closed, due to the limited amount of light and the duff buildup on the forest floor. The overstory is heavily dominated by coniferous trees, usually Pinus strobus alone but sometimes with Pinus resinosa. Other canopy and subcanopy trees include Abies balsamea (in the northern part of this alliance's range), Acer rubrum, Betula papyrifera, Populus tremuloides, and Thuja occidentalis. The shrub layer typically contains species such as Acer spicatum, Corylus cornuta, Diervilla lonicera, Linnaea borealis, and Vaccinium spp., especially Vaccinium myrtilloides and Vaccinium angustifolium. The herb layer contains species adapted to the dry-mesic nature of stands of this alliance. These include Aralia nudicaulis, Eurybia macrophylla (= Aster macrophyllus), Gaultheria procumbens, and Maianthemum canadense. Stands of this alliance are found on loamy sand, sandy loam, loam, and clay loam soils which are typically moderately deep to deep (60-100 cm) except in the Driftless Area where they may be very shallow. The soils are acidic and rarely contain a significant amount of organic material. Stands of this alliance are often found on glacial till or outwash plains, although in northeastern Minnesota they occur near lakes and on lower slopes. This alliance can be found on a variety of landscapes, varying from nearly level to rolling across much of its range to steep slopes in the Driftless Area. In the southern Appalachians these forests occur below 3000 feet (900 m) elevation on upper slopes and ridgetops protected by higher landforms, or as successional forests on abandoned agricultural land.  Accession Code: VB.CC.17927.PINUSSTROBUSFOR 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: Pinus strobus Forest Alliance   Translated: Eastern White Pine Forest Alliance   UID: HIGHER_CLASS_UNIT.2.126509 NatureServe Explorer   Code: A.128