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A.1412 | EcoArt 2002
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Name: A.1412
Reference: EcoArt 2002
Description: Stands included in this alliance have been described from montane wetlands in forests on the west side of the Cascade Mountains in Oregon. Elevations range from 850-1590 m within a maritime climate. This vegetation is found in glacial cirques and valleys, often along streams, below seeps, and especially on the edge of beaver ponds. Substrates are moderately deep (50-90 cm), silt or silty clay loam textured soils with a deep organic horizon (20-50 cm). Parent materials are alluvium or volcanic pumice deposits. These wetlands have a high water table and are seasonally flooded during much of the growing season. Vegetation included in this alliance has a dense herbaceous layer dominated by the perennial graminoid ~Carex aquatilis var. dives$ (50% cover) with ~Carex vesicaria$ often codominating. Many other wet-site graminoids occur, such as ~Scirpus microcarpus, Agrostis humilis (= Agrostis thurberiana), Calamagrostis canadensis, Glyceria grandis$, and 13 other species of ~Carex$. The most common forbs are ~Mimulus alsinoides, Hypericum scouleri (= Hypericum formosum)$, and ~Pedicularis groenlandica$. Other associated forbs may include ~Caltha leptosepala ssp. howellii (= Caltha biflora), Hypericum anagalloides, Cicuta douglasii$, and the ferns ~Athyrium filix-femina$ and ~Dryopteris campyloptera (= Dryopteris austriaca)$. Scattered deciduous and evergreen shrubs may also be present, such as ~Salix lucida ssp. lasiandra (= Salix lasiandra), Spiraea douglasii$, and ~Vaccinium uliginosum$. Adjacent stands include montane forests and riparian communities. 
Accession Code: VB.CC.1187.A1412
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: CAREX AQUATILIS VAR. DIVES SEASONALLY FLOODED HERBACEOUS ALLIANCE
  Code: A.1412
  Common: Sitka Sedge Seasonally Flooded Herbaceous Alliance
(convergence) and Synonyms:
(undetermined) Carex aquatilis var. dives Seasonally Flooded Herbaceous Alliance