Login | Datasets | Logout
 

View Community Concepts - Detail

A.1362 | EcoArt 2002
  click to update datacart
Name: A.1362
Reference: EcoArt 2002
Description: This alliance encompasses seasonally flooded areas dominated by ~Panicum virgatum$. Most examples are maritime-related, including interdunal depressions, but one association is described from areas in Arkansas and other interior states where streams cross prairies and natural depressions in prairies. Associated species in the maritime examples include ~Spartina patens, Juncus canadensis, Solidago sempervirens, Festuca rubra, Eleocharis palustris, Toxicodendron radicans, Linum medium, Carex albolutescens$, and ~Euthamia caroliniana (= Euthamia tenuifolia)$. This community is variable in its expression but is typically dominated by 40-85% cover of ~Panicum virgatum$ and occurs in larger interdunal depressions (up to 0.5 hectare). Variability occurs in the cover of ~Panicum virgatum$ and the richness of associated species. In some Coastal Plain cases, ~Morella cerifera (= Myrica cerifera)$ or ~Baccharis halimifolia$ will constitute less than 10% shrub cover. The vegetation is similar in total floristic composition to ~Morella$-dominated shrublands, but shrubs are generally lacking or at very low cover and grasses are much more abundant. In most cases, shrub coverage is much less or none and other herbs codominate. When ~Panicum virgatum$ is not as dense, it is most often associated with ~Schoenoplectus pungens (= Scirpus pungens), Spartina patens$, or a mixture of both. Soils are characterized by a shallow organic layer (usually a few centimeters in depth) overlying loamy sand or sand. The water table is at or close to the surface in the spring. These depressions are saturated or seasonally flooded and somewhat poorly drained. This alliance also includes areas in Arkansas and other interior states where streams cross prairies and natural depressions in prairies. Many other associations remain to be described in this alliance, and its complete range of variation described. 
Accession Code: VB.CC.1137.A1362
Plot-observations of this Community Concept: 0
      Party Perspective according to: NatureServe (organization)
Perspective from: 26-Nov-1997 to: 17-Mar-2005
     
  • status: accepted
  • Community's Parent: V.A.5.N.k
  • This Community's Level: Alliance
  • This Community's Children: [none]
Names:   Scientific: PANICUM VIRGATUM SEASONALLY FLOODED HERBACEOUS ALLIANCE
  Code: A.1362
  Common: Switchgrass Seasonally Flooded Herbaceous Alliance
(convergence) and Synonyms:
(undetermined) Panicum virgatum Seasonally Flooded Herbaceous Alliance