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CEGL002367 Pinus edulis - Juniperus osteosperma / Bromus tectorum Ruderal Woodland
Type Concept Sentence: No Data Available
Common (Translated Scientific) Name: Two-needle Pinyon - Utah Juniper / Cheatgrass Ruderal Woodland
Colloquial Name: No Data Available
Hierarchy Level: Association
Type Concept: This woodland association has only been described from Capitol Reef National Park in southern Utah and Black Canyon of the Gunnison National Park in western Colorado. Stands are found on mesas, canyon sides, ridges, hillslopes, often on steep colluvial midslopes, valley bottoms and high stream terraces. Sites are typically moderate to steep, but range from 4-38° slopes, occur between 1555 and 2274 m elevation, and are often oriented to warmer southerly aspects. The unvegetated ground surface is generally bedrock, rock and gravel with moderate cover of bare ground and relatively low cover of litter. Soils in bottomland and stream terrace sites are typically well-drained fine sand derived from alluvium. It occurs in areas that experienced more than a century of concentrated domestic livestock grazing. The vegetation is characterized by an open to relatively closed canopy, typically 5-10 m tall, of Pinus edulis and Juniperus osteosperma trees that range in cover from 15 to 50%. Juniperus osteosperma cover tends to be more abundant than Pinus edulis, but either can dominate. The shrub layer is diverse but sparse to low in cover, providing less than 15% cover per stratum. Common shrubs include Amelanchier alnifolia, Amelanchier utahensis, Artemisia tridentata ssp. wyomingensis, Brickellia californica, Cercocarpus montanus, Ericameria nauseosa, Opuntia fragilis, Opuntia polyacantha, Quercus gambelii, Ribes inerme, Symphoricarpos oreophilus, and Symphoricarpos rotundifolius. The herbaceous layer has sparse to low cover (typically <15%) and has low diversity, being characteristically dominated by Bromus tectorum. Common graminoids with low cover include Achnatherum hymenoides, Carex geyeri, Poa fendleriana, Sporobolus cryptandrus, and Sporobolus airoides. Forbs are of moderate diversity and include Agoseris glauca var. laciniata, Allium sp., Antennaria rosea, Arabis spp., Arenaria fendleri, Astragalus sp., Balsamorhiza sagittata, Chaenactis douglasii, Collinsia parviflora, Descurainia pinnata, Eriogonum lonchophyllum, Heterotheca villosa, Lomatium simplex, Machaeranthera canescens, Phlox longifolia, and Senecio spp.
Diagnostic Characteristics: No Data Available
Rationale for Nominal Species or Physiognomic Features: No Data Available
Classification Comments: This association has only been described from Capitol Reef National Park and Black Canyon of the Gunnison National Park. It has likely been undersampled throughout its range because if its highly disturbed nature.
Similar NVC Types: No Data Available
note: No Data Available
Physiognomy and Structure: No Data Available
Floristics: The vegetation is characterized by an open to relatively closed canopy, typically 5-10 m tall, of Pinus edulis and Juniperus osteosperma trees that range in cover from 15 to 50%. Juniperus osteosperma cover tends to be more abundant than Pinus edulis, but either can dominate. The shrub layer is diverse but sparse to low in cover, providing less than 15% cover per stratum. Common shrubs include Amelanchier alnifolia, Amelanchier utahensis, Artemisia tridentata ssp. wyomingensis, Brickellia californica, Cercocarpus montanus, Ericameria nauseosa, Opuntia fragilis, Opuntia polyacantha, Quercus gambelii, Ribes inerme, Symphoricarpos oreophilus, and Symphoricarpos rotundifolius. The herbaceous layer has sparse to low cover (typically <15%) and has low diversity, being characteristically dominated by Bromus tectorum. Common graminoids with low cover include Achnatherum hymenoides, Carex geyeri, Poa fendleriana, Sporobolus cryptandrus, and Sporobolus airoides. Forbs are of moderate diversity and include Agoseris glauca var. laciniata, Allium sp., Antennaria rosea, Arabis spp., Arenaria fendleri, Astragalus sp., Balsamorhiza sagittata, Chaenactis douglasii, Collinsia parviflora, Descurainia pinnata, Eriogonum lonchophyllum, Heterotheca villosa, Lomatium simplex, Machaeranthera canescens, Phlox longifolia, and Senecio spp.
Dynamics: No Data Available
Environmental Description: This woodland association has only been described from Capitol Reef National Park in southern Utah and Black Canyon of the Gunnison National Park in western Colorado. Stands are found on mesas, canyon sides, ridges, hillslopes, often on steep colluvial midslopes, valley bottoms and high stream terraces. Sites are typically moderate to steep, but range from 4-38° slopes and occur between 1555 and 2274 m elevation, and are often oriented to warmer southerly aspects. The unvegetated ground surface is generally bedrock, rock and gravel with moderate cover of bare ground and relatively low cover of litter. Soils in bottomland and stream terrace sites are typically well-drained fine sand derived from alluvium. It occurs in areas that experienced more than a century of concentrated domestic livestock grazing.
Geographic Range: This association has only been described from Capitol Reef National Park in southern Utah and Black Canyon of the Gunnison National Park in western Colorado. It is likely to occur in disturbed pinyon-juniper woodlands throughout the Colorado Plateau, southern Rocky Mountain foothills, and Great Basin.
Nations: US
States/Provinces: CO, UT
Plot Analysis Summary:
http://vegbank.org/natureserve/ELEMENT_GLOBAL.2.769197
Confidence Level: High
Confidence Level Comments: No Data Available
Grank: GNA
Greasons: No Data Available
| Type | Name | Database Code | Classification Code |
|---|---|---|---|
| Class | 1 Forest & Woodland Class | C01 | 1 |
| Subclass | 1.B Temperate & Boreal Forest & Woodland Subclass | S15 | 1.B |
| Formation | 1.B.2 Cool Temperate Forest & Woodland Formation | F008 | 1.B.2 |
| Division | 1.B.2.Nc Western North American Pinyon - Juniper Woodland & Scrub Division | D010 | 1.B.2.Nc |
| Macrogroup | 1.B.2.Nc.1 Singleleaf Pinyon - Utah Juniper - Western Juniper Intermountain Woodland Macrogroup | M896 | 1.B.2.Nc.1 |
| Group | 1.B.2.Nc.1.a Two-needle Pinyon - Utah Juniper Woodland Group | G900 | 1.B.2.Nc.1.a |
| Alliance | A3572 Two-needle Pinyon - Utah Juniper Grassy Open Woodland Alliance | A3572 | 1.B.2.Nc.1.a |
| Association | CEGL002367 Two-needle Pinyon - Utah Juniper / Cheatgrass Ruderal Woodland | CEGL002367 | 1.B.2.Nc.1.a |
Concept Lineage: No Data Available
Predecessors: No Data Available
Obsolete Names: No Data Available
Obsolete Parents: No Data Available
Synonomy: No Data Available
- Clark, D., M. Dela Cruz, T. Clark, J. Coles, S. Topp, A. Evenden, A. Wight, G. Wakefield, and J. Von Loh. 2009. Vegetation classification and mapping project report, Capitol Reef National Park. Natural Resource Report NPS/NCPN/NRTR--2009/187. National Park Service, Fort Collins, CO. 882 pp.
- 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.
- Romme, W. H., K. D. Heil, J. M. Porter, and R. Fleming. 1993. Plant communities of Capitol Reef National Park, Utah. USDI National Park Service, Technical Report NPS/NAUCARE/NRTER-93/02. Cooperative Park Studies Unit, Northern Arizona University. 37 pp.
- Western Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Boulder, CO.