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A.1599 | EcoArt 2002
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Name: A.1599
Reference: EcoArt 2002
Description: This alliance is found in northern Wisconsin and in Ontario, Canada. Stands are dominated by ferns, forbs, and graminoids, with tree cover less than 10%. ~Pteridium aquilinum$ may form an almost continuous cover of fronds. Graminoid diversity is high, including ~Bromus kalmii, Danthonia spicata, Elymus trachycaulus$, and ~Poa compressa$. Associated forbs include ~Symphyotrichum ciliolatum (= Aster ciliolatus), Solidago nemoralis$, and ~Fragaria virginiana$. Exotic species composition can be high, including ~Hieracium aurantiacum, Lactuca serriola, Phleum pratense, Poa compressa, Poa pratensis, Rumex acetosella$, and ~Verbascum thapsus$ (Curtis 1959). Stands of this alliance are most likely modified occurrences of other community types. ^This alliance occurs on level plains or rolling uplands and in depressions ('frost pockets') in pitted outwash topography. These bracken-dominated grasslands likely originated through fire. Many areas have scattered pine stumps. Stands may have originated after severe slash fires following logging that destroyed or reduced the humus in the soil. In some cases the sites may have originally been ~Pinus resinosa$ or ~Pinus banksiana$ barrens, where the pines occurred as a sparse layer over the grassland. The bracken grasslands are fairly stable. They are slowly invaded by ~Populus tremuloides$ and ~Abies balsamea$, but frost and other factors may slow their invasion. 
Accession Code: VB.CC.1352.A1599
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.B.2.N.a
  • This Community's Level: Alliance
  • This Community's Children: [none]
Names:   Code: A.1599
  Scientific: PTERIDIUM AQUILINUM - BROMUS KALMII HERBACEOUS ALLIANCE
  Common: Northern Bracken - Kalm's Brome Herbaceous Alliance
(convergence) and Synonyms:
(undetermined) Pteridium aquilinum - Bromus kalmii Herbaceous Alliance