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A.953 | EcoArt 2002
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Name: A.953
Reference: EcoArt 2002
Description: Examples of this alliance are found in montane riparian zones of the dry southern mountains of New Mexico and Arizona. Elevations where it may be found range from 1050 m to just over 2400 m. Flowing or standing water is always present in the streambed, and stream gradients appear to range from nearly flat to moderately steep. No other information on environment is available. Stands dominated by ~Alnus oblongifolia$ are found at lower elevations than those in similar riparian zones that are dominated by ~Alnus incana$, upper montane ~Salix$ spp. or ~Picea pungens$. Riparian vegetation at lower elevations is dominated by ~Platanus wrightii, Fraxinus velutina$, or ~Juglans major$. This alliance is characterized by the abundance of ~Alnus oblongifolia$ in a tall-shrub/small-tree canopy layer. At lower elevations of its range, ~Acer negundo, Fraxinus velutina, Juglans major, Cupressus arizonica$, or ~Platanus wrightii$ may be codominant. At higher elevations, codominants can include ~Populus angustifolia$ or ~Acer grandidentatum$. If ~Populus angustifolia$ is present, it is not in the form of an overstory canopy, rather is shorter saplings and pole-sized small individuals. The woody vines ~Vitis arizonica$ and ~Parthenocissus quinquefolia$ are common in most stands. Other shrubs in the understory may include ~Salix exigua, Prunus serotina$ or ~Symphoricarpos oreophilus$. Common forb species can include ~Maianthemum racemosum, Aquilegia chrysantha, Galium triflorum, Pteridium aquilinum, Thalictrum fendleri$, and ~Geranium$ spp. Common graminoids include ~Glyceria striata$, and species of ~Carex$ or ~Bromus$. Upland vegetation adjacent to ~Alnus oblongifolia$ communities can include ~Pinus ponderosa, Pseudotsuga menziesii$, or ~Populus tremuloides$ forests, or ~Quercus gambelii$ shrublands. 
Accession Code: VB.CC.2580.A953
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: III.B.2.N.d
  • This Community's Level: Alliance
  • This Community's Children: [none]
Names:   Scientific: ALNUS OBLONGIFOLIA TEMPORARILY FLOODED SHRUBLAND ALLIANCE
  Code: A.953
  Common: Arizona Alder Temporarily Flooded Shrubland Alliance
(convergence) and Synonyms:
(undetermined) Alnus oblongifolia Temporarily Flooded Forest Alliance