Common (Translated Scientific) Name: Box-elder - Arizona Alder Riparian Forest

Colloquial Name: No Data Available

Hierarchy Level:  Association

Type Concept: This association is only known to occur at Bandelier National Monument in north-central New Mexico. The current description is based on data received from there and will be updated when additional inventory data are available. This riparian association occurs at elevations between 1810 and 1820 m (5940-5980 feet) along canyon bottoms with low solar exposure. Stands occur on alluvial terraces and bars adjacent to perennial stream channels with gradients less than 5%. Soils are mapped as loamy Mollisols derived from latite, dacite, and rhyolitic alluvium. The ground surface is characterized by shrubs rooted among rhizomatous grasses, exposed gravels and soil-intermixed litter patches. This riparian forest association is characterized by a moderately open to closed tree canopy (45-60%) dominated by broadleaf deciduous Acer negundo and Alnus oblongifolia (facultative wetland species). In the shrub layer, Betula occidentalis, also a facultative wetland species, can be well-represented. Pinus ponderosa may occur at the edges of a stand. The shrub Forestiera pubescens and the vine Parthenocissus vitacea may be common, but it is the rich and luxuriant herbaceous layer that is characteristic (reaching as much as 50% cover). The graminoids are dominated by Poa pratensis along with Bromus inermis, Carex spp., and Dactylis glomerata as common associates. The facultative wetland species Lactuca serriola and Cicuta maculata are the most frequent among the forbs.

Diagnostic Characteristics: No Data Available

Rationale for Nominal Species or Physiognomic Features: No Data Available

Classification Comments: No Data Available

Similar NVC Types: No Data Available

note: No Data Available