Print Report

CEGL002808 Pseudotsuga menziesii / Artemisia tridentata (ssp. vaseyana, ssp. wyomingensis) Woodland

Type Concept Sentence: No Data Available


Common (Translated Scientific) Name: Douglas-fir / (Mountain Big Sagebrush, Wyoming Big Sagebrush) Woodland

Colloquial Name: No Data Available

Hierarchy Level:  Association

Type Concept: This woodland association is only known from the Curecanti National Recreation Area in western Colorado in the Gunnison River Canyon and along Cebolla Creek. More survey and classification work are needed to fully characterize this type. Stands occur on talus slopes in canyons and ravines. Sites are steep (64-78% slopes), occur between 2340 and 2358 m elevation, and are oriented to the northeast. Substrates are rapidly drained sandy soils derived from gneiss talus and colluvium. The unvegetated surface has low to moderate cover of litter and exposure of bare soil. Large and small rocks provide low to moderate cover. Downed wood is common. The vegetation is characterized by an open tree canopy(15-28% cover) 10-35 m high composed of Pseudotsuga menziesii, and a relatively open short-shrub layer of Artemisia tridentata ssp. wyomingensis shrubs provide 15 to 20% cover. Scattered Pseudotsuga menziesii and Juniperus scopulorum 2-10 m tall form a subcanopy. Other shrubs present include Cercocarpus montanus, Chrysothamnus viscidiflorus, Quercus gambelii, and Symphoricarpos rotundifolius. The low to moderately dense herbaceous layer is moderately diverse and mostly composed of graminoids, such as Achnatherum hymenoides, Elymus elymoides, Koeleria macrantha, Poa fendleriana, Poa secunda, and sparse cover of forbs. Lichens and mosses provide sparse to moderate cover, up to 25%.

Diagnostic Characteristics: No Data Available

Rationale for Nominal Species or Physiognomic Features: No Data Available

Classification Comments: This association has only been sampled from two locations in Curecanti National Recreation Area in western Colorado. More survey and classification work are needed to change the provisional status of this association.

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

Physiognomy and Structure: No Data Available

Floristics: No Data Available

Dynamics:  No Data Available

Environmental Description:  No Data Available

Geographic Range: This association is only known from the Curecanti National Recreation Area in western Colorado in the Gunnison River Canyon and along Cebolla Creek. More survey and classification work are needed to document the global range of this association.

Nations: US

States/Provinces:  CO




Confidence Level: Low - Poorly Documented

Confidence Level Comments: No Data Available

Grank: GNR

Greasons: No Data Available


Concept Lineage: No Data Available

Predecessors: No Data Available

Obsolete Names: No Data Available

Obsolete Parents: No Data Available

Synonomy: = Pseudotsuga menziesii / Artemisia tridentata (ssp. vaseyana, ssp. wyomingensis) Woodland (Tendick et al. 2010)

Concept Author(s): Tendick et al. (2010)

Author of Description: K.A. Schulz

Acknowledgements: No Data Available

Version Date: 02-23-10

  • Coles, J., A. Tendick, J. Von Loh, G. Bradshaw, G. Manis, A. Wight, G. Wakefield, and A. Evenden. 2010. Vegetation classification and mapping project report, Black Canyon of the Gunnison National Park. Natural Resource Technical Report NPS/NCPN/NRTR--2010/361. National Park Service, Fort Collins, CO.
  • Tendick, A., J. Coles, P. Williams, G. Bradshaw, G. Manis, A. Wight, G. Wakefield, and A. Evenden. 2010. Vegetation classification and mapping project report, Curecanti National Recreation Area. Natural Resource Technical Report NPS/NCPN/NRTR--2010/408. National Park Service, Fort Collins, CO. 797 pp.
  • Western Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Boulder, CO.