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CEGL002649 Populus deltoides / Carex pellita Floodplain Woodland

Type Concept Sentence: No Data Available


Common (Translated Scientific) Name: Eastern Cottonwood / Woolly Sedge Floodplain Woodland

Colloquial Name: No Data Available

Hierarchy Level:  Association

Type Concept: This woodland plant association occurs sporadically on clayey soils along broad, braided channels in low-lying swales and overflow channels in the lower South Platte River of northeastern Colorado (Central Shortgrass Prairie, Ecoregion 27). It also occurs in Wyoming, and is likely to be found in Nebraska and Kansas. Mature Populus deltoides dominates the canopy, while Carex pellita forms a dense ground cover. Tree canopy may also include Salix amygdaloides. There is no consistent shrub canopy, though Prunus virginiana, Celtis laevigata, and Parthenocissus quinquefolia may be present. Other herbs include Elymus lanceolatus, Bromus inermis, Muhlenbergia asperifolia, and Phalaris arundinacea. This is a late-seral community, requiring first scouring floods for Populus deltoides establishment, then cessation of scouring floods for Carex pellita establishment.

Diagnostic Characteristics: No Data Available

Rationale for Nominal Species or Physiognomic Features: No Data Available

Classification Comments: This association is new to the literature; however, it has been observed by the Wyoming and Nebraska Natural Heritage Program ecologists and is expected to occur in Kansas as well. Classification is based on 7 quantitative plots along the South Platte and Arkansas rivers in Colorado. Sites occupied are slightly less well-drained than areas dominated by Spartina pectinata.

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

Physiognomy and Structure: No Data Available

Floristics: Mature Populus deltoides dominates the canopy (50-80% canopy cover), while Carex pellita (= Carex lanuginosa) forms a dense ground cover. Tree canopy may also include Salix amygdaloides (31-61% cover). There is no consistent shrub canopy, though Prunus virginiana, Celtis laevigata, and Parthenocissus quinquefolia may be present. Other herbs include Elymus lanceolatus, Bromus inermis, Muhlenbergia asperifolia, and Phalaris arundinacea.

Dynamics:  This is a late-seral community, requiring first scouring floods for Populus deltoides establishment, then cessation of scouring floods for Carex pellita establishment.

Environmental Description:  This woodland plant association occurs sporadically on clayey soils along broad, braided channels in low-lying swales and overflow channels in the lower South Platte River of northeastern Colorado (Central Shortgrass Prairie, Ecoregion 27). It also occurs in Wyoming, and is likely to be found in Nebraska and Kansas.

Geographic Range: This community is found in Colorado, Wyoming, Nebraska and probably Kansas.

Nations: US

States/Provinces:  CO, KS?, NE?, WY




Confidence Level: Low

Confidence Level Comments: No Data Available

Grank: G2

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 / Carex pellita (=lanuginosa) Woodland (Carsey et al. 2003a)

Concept Author(s): Western Ecology Group

Author of Description: Western Ecology Group

Acknowledgements: No Data Available

Version Date: 04-09-98

  • CNHP [Colorado Natural Heritage Program]. 2006-2017. Tracked natural plant communities. Colorado Natural Heritage Program, Colorado State University, Fort Collins. [https://cnhp.colostate.edu/ourdata/trackinglist/plant_communities/]
  • Carsey, K., G. Kittel, K. Decker, D. J. Cooper, and D. Culver. 2003a. Field guide to the wetland and riparian plant associations of Colorado. Colorado Natural Heritage Program, Fort Collins, CO.
  • Kittel, G., E. Van Wie, M. Damm, R. Rondeau, S. Kettler, and J. Sanderson. 1999a. A classification of the riparian plant associations of the Rio Grande and Closed Basin watersheds, Colorado. Unpublished report prepared by the Colorado Natural Heritage Program, Colorado State University, Fort Collins.
  • Kittel, G., R. Rondeau, and A. McMullen. 1996. A classification of the riparian vegetation of the Lower South Platte and parts of the Upper Arkansas River basins, Colorado. Submitted to Colorado Department of Natural Resources and the Environmental Protection Agency, Region VIII. Prepared by Colorado Natural Heritage Program, Fort Collins. 243 pp.
  • WNDD [Wyoming Natural Diversity Database]. No date. Unpublished data on file. Wyoming Natural Diversity Database, University of Wyoming, Laramie, WY.
  • Western Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Boulder, CO.