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CEGL000678 Populus deltoides / Muhlenbergia asperifolia Flooded Forest

Type Concept Sentence: No Data Available


Common (Translated Scientific) Name: Eastern Cottonwood / Scratchgrass Flooded Forest

Colloquial Name: No Data Available

Hierarchy Level:  Association

Type Concept: This is a lowland forested riparian association known from the Rio Grande and Pecos drainages of central New Mexico and the Arkansas River in southeastern Colorado. This association occurs in lowland river valleys at elevations ranging from 1180-1680 m (3850-5500 feet). Typical sites are mid- to upper-elevation bars and terraces within the active floodplain. Soils are young, weakly developed Entisols. This association is often dominated by older, open stands of Populus deltoides ssp. wislizeni or Populus deltoides ssp. monilifera with grassy understories dominated by Muhlenbergia asperifolia (the characteristic herbaceous species) and Distichlis spicata (up to 80% total herbaceous cover). Salix amygdaloides is present in the tree canopies of some stands. Shrubs are few and scattered, although invasive and exotic Tamarix spp. and Elaeagnus angustifolia are often abundant. Other herbaceous species may include Scirpus microcarpus, Panicum virgatum, and Eleocharis palustris. A few weedy forbs include Apocynum cannabinum and Ambrosia artemisiifolia.

Diagnostic Characteristics: No Data Available

Rationale for Nominal Species or Physiognomic Features: No Data Available

Classification Comments: The Populus deltoides ssp. wislizeni / Muhlenbergia asperifolia plant association described from New Mexico (Dick-Peddie et al. 1984) is the same as the Colorado type Populus deltoides ssp. monilifera / Muhlenbergia asperifolia plant association (Kittel et al. 1999b). However, the subspecies of cottonwood is different, with Colorado stands dominated by Populus deltoides ssp. monilifera (plains cottonwood) and the New Mexico stands dominated by Populus deltoides ssp. wislizeni (Rio Grande cottonwood). ~Populus deltoides (ssp. wislizeni, ssp. monilifera) / Distichlis spicata Riparian Woodland (CEGL000939)$$, described from Colorado (Lindauer 1970, Christy 1973), is similar to this type, as the stands of ~Populus deltoides / Muhlenbergia asperifolia Flooded Forest (CEGL000678)$$ often contain some Distichlis spicata.

Similar NVC Types: No Data Available
note: No Data Available

Physiognomy and Structure: No Data Available

Floristics: This association is often dominated by older, open stands of Populus deltoides ssp. wislizeni or Populus deltoides ssp. monilifera with grassy understories dominated by Muhlenbergia asperifolia (the characteristic herbaceous species) and Distichlis spicata (up to 80% total herbaceous cover). Salix amygdaloides is present in the tree canopies of some stands. Shrubs are few and scattered, although invasive and exotic Tamarix spp. and Elaeagnus angustifolia are often abundant. Other herbaceous species may include Scirpus microcarpus, Panicum virgatum, and Eleocharis palustris. A few weedy forbs include Apocynum cannabinum and Ambrosia artemisiifolia.

Dynamics:  No Data Available

Environmental Description:  This association occurs in lowland river valleys at elevations ranging from 1180-1680 m (3850-5500 feet). Typical sites are mid- to upper-elevation bars and terraces within the active floodplain. Soils are young, weakly developed Entisols.

Geographic Range: This association is restricted to south-central and southeastern New Mexico, and to the Arkansas River drainage of southeastern Colorado.

Nations: US

States/Provinces:  CO, NM




Confidence Level: Low

Confidence Level Comments: No Data Available

Grank: G3

Greasons: No Data Available


Concept Lineage: No Data Available

Predecessors: No Data Available

Obsolete Names: No Data Available

Obsolete Parents: No Data Available

Synonomy: = Populus deltoides / Muhlenbergia asperifolia Forest (Carsey et al. 2003a)
= Populus deltoides / Muhlenbergia asperifolia Forest Association (Donnelly et al. 2006)
= Populus deltoides ssp. monilifera / Muhlenbergia asperifolia (Kittel et al. 1999b)
< Cottonwood - Willow Series (Dick-Peddie et al. 1984)
< Cottonwood Community Type (Christy 1973)

Concept Author(s): E. Muldavin

Author of Description: E. Muldavin

Acknowledgements: No Data Available

Version Date: 11-26-97

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