Name:
Andropogon virginicus - Ambrosia artemisiifolia - Conyza canadensis Eastern Ruderal Grassland Alliance
Reference:
NatureServe Biotics 2019
Description:
This alliance encompasses a variety of herbaceous vegetation that occurs in the eastern United States on sites that were cleared and the soils disturbed (e.g., old fields, abandoned quarries, old homesteads). Stands are composed of combinations of native and/or exotic species for which no natural analog exists. These species include <i>Ambrosia artemisiifolia, Andropogon virginicus var. virginicus, Conyza canadensis, Cynodon dactylon, Eremochloa ophiuroides, Eupatorium</i> spp., <i>Imperata cylindrica, Schedonorus arundinaceus, Schedonorus pratensis, Paspalum notatum, Pennisetum glaucum, Solidago</i> spp., <i>Sorghum halepense, Stenotaphrum secundatum</i>, and <i>Urochloa ramosa</i>. Scattered shrubs may be present, including <i>Rhus copallinum</i>. In the southeastern Piedmont, the herbs and grasses that dominate old fields undergo a rapid turnover in the first three years after abandonment. By the third year, <i>Andropogon virginicus</i> often is the dominant plant. Before it achieves dominance, <i>Ambrosia artemisiifolia, Conyza canadensis, Digitaria sanguinalis</i>, and <i>Symphyotrichum pilosum</i> may be more prominent; other combinations of native and exotic species also may occur.
Accession Code:
urn:lsid:vegbank.org:commConcept:38608-{2B933101-F967-4594-BC53-8D5D0E1D76D0}
Plot-observations of this Community Concept:
0
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