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A.1247 | EcoArt 2002
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Name: A.1247
Reference: EcoArt 2002
Description: This once-extensive bunchgrass alliance of California's valleys and foothills occurs on deep soils with a high clay content. Stands can occur on all topographic positions, but due to climatic factors, they do not occur over 1400 m of elevation. The native California bunch grasses are adapted to a Mediterranean climate with moist, cool winters and long, dry summers. Precipitation varies from 25-70 cm per year, and falls mostly between November and April. Stands typically include many exotic annual grasses. This native California bunchgrass alliance is dominated by ~Nassella cernua$. Other graminoids present may include ~Elymus glaucus, Festuca californica, Melica californica, Leymus triticoides, Nassella lepida, Nassella pulchra, Aristida ternipes, Koeleria macrantha$, and ~Poa secunda$. Many exotic annuals, such as ~Bromus diandrus, Bromus madritensis, Bromus hordeaceus, Avena barbata, Avena fatua$, and ~Lolium perenne ssp. multiflorum (= Lolium multiflorum)$, have invaded stands of this alliance. Emergent trees and shrubs may be present, particularly the oak ~Quercus douglasii$. Plant cover tends to be open. 
Accession Code: VB.CC.1013.A1247
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.d
  • This Community's Level: Alliance
  • This Community's Children: [none]
Names:   Scientific: NASSELLA CERNUA HERBACEOUS ALLIANCE
  Code: A.1247
  Common: Nodding Needlegrass Herbaceous Alliance
(convergence) and Synonyms:
(undetermined) Nassella cernua Herbaceous Alliance