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A.1443 | EcoArt 2002
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Name: A.1443
Reference: EcoArt 2002
Description: This alliance is found in the midwestern and western United States and central Canada. Vegetation is characterized by medium to tall graminoids which typically range from 1 to over 2 m. The vegetation is moderately dense to dense. Some stands are heavily dominated by one or two ~Scirpus$ species while others have several graminoids common throughout the stand. The most abundant species are typically ~Schoenoplectus acutus (= Scirpus acutus), Schoenoplectus fluviatilis (= Scirpus fluviatilis)$, and ~Schoenoplectus tabernaemontani (= Scirpus tabernaemontani)$. Species composition and abundance can vary from year to year depending mostly on water level fluctuations. In most years, typical species include ~Lemna$ spp., ~Phragmites australis, Schoenoplectus americanus (= Scirpus americanus)$ (in alkaline stands), ~Triglochin maritima$ (in alkaline stands), ~Typha latifolia$, and ~Utricularia macrorhiza$. ~Potamogeton$ spp. often occur in the deeper parts of stands of this alliance and where emergent species are not densely packed. Shrubs, such as ~Salix$ spp., are not common but may become established in shallow water areas. During droughts, species more tolerant of low water, such as ~Polygonum amphibium$, may invade and alter the species composition of stands of this alliance. ^Stands of this alliance are flooded for most or all of the growing season. Stands can have water from 0 (exposed soil) to approximately 1.5 m deep, but usually are less than 1 m. Within a stand, water levels can vary by up to 1 m during the year. The water can be fresh to mildly saline throughout most of this alliance's range; however, in the Nebraska Sandhills, some stands occur in moderately alkaline water. Across the range of this alliance, soils are deep, poorly drained, muck, peat, or mineral. 
Accession Code: VB.CC.1218.A1443
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.l
  • This Community's Level: Alliance
  • This Community's Children: [none]
Names:   Code: A.1443
  Scientific: SCHOENOPLECTUS ACUTUS - (SCHOENOPLECTUS TABERNAEMONTANI) SEMIPERMANENTLY FLOODED HERBACEOUS ALLIANCE
  Common: Hardstem Bulrush - (Softstem Bulrush) Semipermanently Flooded Herbaceous Alliance
(convergence) and Synonyms:
(undetermined) Schoenoplectus acutus - (Schoenoplectus tabernaemontani) Semipermanently Flooded Herbaceous Alliance