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Populus deltoides (ssp. wislizeni, ssp. monilifera) / Sporobolus airoides Flooded Woodland | NatureServe Biotics 2019
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Name: Populus deltoides (ssp. wislizeni, ssp. monilifera) / Sporobolus airoides Flooded Woodland
Reference: NatureServe Biotics 2019
Description: This association is common in the Pecos basin in southeastern New Mexico and occasional in the middle and lower Rio Grande. This community type occurs primarily along the broad valley floors of large river drainages with low-gradient and sandy or silty riverbeds. Elevations are relatively low and are known to range from 1080 to 1400 m (3550-4575 feet). This community occurs mainly on low river terraces that are situated well above stream bankfull levels (discharge ratio well above 1). Under unregulated conditions, these sites are probably inundated every 20 years on average. Where rivers are highly regulated, these sites are seldom flooded. The soils are young, poorly developed Entisols that may be sandy throughout or have sandy or coarse loamy layers overlain by fine clay layers. They are moderate to well-drained. Soils are generally dry at the surface but become more moist with depth (1 m or more), particularly during seasonal high flows. Mature stands of <i>Populus deltoides ssp. wislizeni</i> or <i>Populus deltoides ssp. monilifera</i> have open to moderately open canopies with a grassy understory. Other trees are generally absent. The exotic <i>Tamarix ramosissima</i> can occur as scattered shrubby individuals. Herbaceous diversity is moderate (44 species), and <i>Sporobolus airoides</i> dominates with 30% cover on average and upwards to as much as 50%. The shrub layer is sparse to well-represented with <i>Baccharis emoryi</i> often common, and occasionally <i>Ericameria nauseosa</i> and <i>Gutierrezia sarothrae</i> are present. Forbs are sparse and low to moderate in diversity (24 species known from the type). 
Accession Code: urn:lsid:vegbank.org:commConcept:34629-{97244B88-4698-4BC6-A492-424E8BF9431E}
Plot-observations of this Community Concept: 0
      Party Perspective according to: NatureServe (organization)
Perspective from: 21-Jul-2004 to: ongoing
      Names:   UID: ELEMENT_GLOBAL.2.737564 NatureServe ExplorerNatureServe Explorer logo
  Code: CEGL005977
  Translated: (Rio Grande Cottonwood, Plains Cottonwood) / Alkali Sacaton Flooded Woodland
  Scientific: Populus deltoides (ssp. wislizeni, ssp. monilifera) / Sporobolus airoides Flooded Woodland
(convergence) and Synonyms:
(similar) Populus deltoides (ssp. wislizeni, ssp. monilifera) / Sporobolus airoides Woodland
(similar) Populus deltoides / Sporobolus airoides Woodland