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CEGL002933 Chrysothamnus viscidiflorus / Poa pratensis Ruderal Shrub Grassland
Type Concept Sentence: No Data Available
Common (Translated Scientific) Name: Yellow Rabbitbrush / Kentucky Bluegrass Ruderal Shrub Grassland
Colloquial Name: No Data Available
Hierarchy Level: Association
Type Concept: This association is known from the southern Rocky Mountains and Colorado Plateau at 2200-2445 m (7200-8015 feet) elevation and likely is more widespread. Stands occur on the lower slopes of ridges, on terraces above drainages, and in valley bottoms. Sites are gently sloping, often on cooler northerly aspects. Ground surfaces may have high cover of litter. Soils are moderately well-drained to rapidly drained loams and silty clay loams derived from alluvium. The vegetation is characterized by a moderately dense herbaceous layer dominated by the introduced rhizomatous grass Poa pratensis with an open to moderately dense (10-50% cover) short-shrub layer dominated by Chrysothamnus viscidiflorus. Additional short and dwarf-shrubs that provide low cover include Artemisia tridentata, Mahonia repens, and Symphoricarpos rotundifolius. Other common graminoids with low cover include Achnatherum lettermanii, Bromus porteri, Festuca thurberi, and Sporobolus cryptandrus. Forb cover is sparse but may be diverse and include Artemisia ludoviciana, Eriogonum racemosum, Eriogonum umbellatum, Lupinus argenteus, Penstemon palmeri, and Tragopogon dubius. Seedling Chrysothamnus viscidiflorus short shrubs are present in the stand and provide sparse cover.
Diagnostic Characteristics: No Data Available
Rationale for Nominal Species or Physiognomic Features: No Data Available
Classification Comments: The diagnostic characteristic of this semi-natural shrub-steppe association is the lush mesic graminoid layer dominated by Poa pratensis; however, cover of Chrysothamnus viscidiflorus is variable and may resemble an open shrubland.
Similar NVC Types: No Data Available
note: No Data Available
Physiognomy and Structure: No Data Available
Floristics: This association is characterized by a moderately dense herbaceous layer dominated by the introduced rhizomatous grass Poa pratensis with an open to moderately dense (10-50% cover) short-shrub layer dominated by Chrysothamnus viscidiflorus. Additional short and dwarf-shrubs that provide low cover include Artemisia tridentata, Mahonia repens, and Symphoricarpos rotundifolius. Other common graminoids with low cover include Achnatherum lettermanii, Bromus porteri, Festuca thurberi, and Sporobolus cryptandrus. Forb cover is sparse but may be diverse and include Artemisia ludoviciana, Eriogonum racemosum, Eriogonum umbellatum, Lupinus argenteus, Penstemon palmeri, and Tragopogon dubius. Seedling Chrysothamnus viscidiflorus short shrubs are present in the stand and provide sparse cover.
Dynamics: No Data Available
Environmental Description: This association is known from the southern Rocky Mountains and Colorado Plateau at 2200-2445 m (7200-8015 feet) elevation and likely is more widespread. Stands occur on the lower slopes of ridges, on terraces above drainages, and in valley bottoms. Sites are gently sloping, often on cooler northerly aspects. Ground surfaces may have high cover of litter. Soils are moderately well-drained to rapidly drained loams and silty clay loams derived from alluvium.
Geographic Range: This association has currently only been described from southwestern Utah and western Colorado.
Nations: US
States/Provinces: CO, ID, UT
Plot Analysis Summary:
http://vegbank.org/natureserve/ELEMENT_GLOBAL.2.684390
Confidence Level: Low
Confidence Level Comments: No Data Available
Grank: GNA
Greasons: No Data Available
| Type | Name | Database Code | Classification Code |
|---|---|---|---|
| Class | 3 Desert & Semi-Desert Class | C03 | 3 |
| Subclass | 3.B Cool Semi-Desert Scrub & Grassland Subclass | S11 | 3.B |
| Formation | 3.B.1 Cool Semi-Desert Scrub & Grassland Formation | F033 | 3.B.1 |
| Division | 3.B.1.Ne Western North American Cool Semi-Desert Scrub & Grassland Division | D040 | 3.B.1.Ne |
| Macrogroup | 3.B.1.Ne.90 Crested Wheatgrass - Cheatgrass - Tall Tumblemustard Western North American Ruderal Semi-Desert Scrub & Grassland Macrogroup | M499 | 3.B.1.Ne.90 |
| Group | 3.B.1.Ne.90.a Great Basin-Intermountain Ruderal Dry Shrubland & Grassland Group | G600 | 3.B.1.Ne.90.a |
| Alliance | A4213 Sagebrush species - Mixed Shrub Ruderal Understory Shrubland Alliance | A4213 | 3.B.1.Ne.90.a |
| Association | CEGL002933 Yellow Rabbitbrush / Kentucky Bluegrass Ruderal Shrub Grassland | CEGL002933 | 3.B.1.Ne.90.a |
Concept Lineage: No Data Available
Predecessors: No Data Available
Obsolete Names: No Data Available
Obsolete Parents: No Data Available
Synonomy: = Chrysothamnus viscidiflorus / Poa pratensis Semi-natural Shrub Herbaceous Vegetation [Provisional] (Cogan et al. 2004)
- Cogan, D., M. Reid, K. Schulz, and M. Pucherelli. 2004. Zion National Park, Utah 1999-2003. Vegetation Mapping Project. Technical Memorandum 8260-03-01. Remote Sensing and GIS Group Technical Service Center, Bureau of Reclamation, Denver, CO. Appendix F: Vegetation Association Descriptions for Zion.
- 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.