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Poa pratensis Semi-natural Herbaceous Alliance | Midwestern Ecology Working Group...
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Name: Poa pratensis Semi-natural Herbaceous Alliance Reference: Midwestern Ecology Working Group... Description: This semi-natural grassland alliance is potentially widespread throughout the Great Plains and into the midwestern United States and Canada, depending on how the type is defined. Stands can occur in a wide variety of human-disturbed and native habitats. Stands are found on upland sites in the northwestern Great Plains and likely occur elsewhere in the western U.S. where Poa pratensis has invaded native western rangeland. The vegetation is characterized by a medium-tall (0.5-1 m), moderate to dense herbaceous canopy that is strongly dominated by the introduced perennial, sod-forming graminoid Poa pratensis. Poa pratensis is considered to be both a native and naturalized species from Eurasia. It is present to codominant in many other natural plant associations, but the diagnostic character in this alliance is that there is typically not enough of the native grassland left to classify it as a poor-condition natural type. Other native species may occur as well, but they are generally less than 10% cover. Native species may include mixed-grass prairie grasses, such as Pascopyrum smithii and Hesperostipa comata (= Stipa comata), as well as others. Associates are often those early-seral and weedy species that tolerate historic heavy livestock grazing or other disturbance well.  Accession Code: VB.CC.28477.POAPRATENSISSEM Plot-observations of this Community Concept: 0
	Party Perspective according to: NatureServe (organization) Perspective from: 17-Jun-1999 to: 01-May-2019
	status: accepted This Community's Level: Alliance This Community's Children: [none]		Names:   Scientific: Poa pratensis Semi-natural Herbaceous Alliance   Translated: Kentucky Bluegrass Semi-natural Herbaceous Alliance   UID: HIGHER_CLASS_UNIT.2.125216 NatureServe Explorer   Code: A.3562