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CEGL002819 Pinus edulis - Juniperus osteosperma / Pseudoroegneria spicata - Cushion Plant Woodland
Type Concept Sentence: No Data Available
Common (Translated Scientific) Name: Two-needle Pinyon - Utah Juniper / Bluebunch Wheatgrass - Cushion Plant Woodland
Colloquial Name: No Data Available
Hierarchy Level: Association
Type Concept: This association has only been documented from Dinosaur National Monument in northwestern Colorado and adjacent eastern Utah. It occurs on the high windswept ridges and valleys of plateaus and mountains at elevations above 1900 m to as high as 2400 m. Slopes are east- to southwest-facing and gentle to moderately steep. Soils are thin, and texture is variable, depending on the geologic substrate, which is typically limestone or derived from limestone, such as Bishop conglomerate. The soil surface is often covered with gravel and large rocks. The vegetation is characterized by a sparse to moderate tree cover of Pinus edulis and Juniperus osteosperma with an understory of bunchgrasses and cushion plants. The shrub stratum has less than 10% cover and lacks diagnostic species. The herbaceous layer is highly diverse with consistent dominant species. Pseudoroegneria spicata is typically present with low to moderate cover, but in heavily grazed areas, it may be absent. Other grasses that occur consistently include Poa secunda, Poa fendleriana, Achnatherum hymenoides, and Koeleria macrantha. Forbs characterized as "cushion" plants include Stenotus acaulis, Phlox hoodii, Petradoria pumila, and Phlox multiflora. A variety of other forbs also occur in this association, particularly Balsamorhiza sagittata.
Diagnostic Characteristics: No Data Available
Rationale for Nominal Species or Physiognomic Features: No Data Available
Classification Comments: This association is very similar in habitat requirements and composition to some stands that have been included in ~Pinus edulis - Juniperus spp. / Pseudoroegneria spicata Woodland (CEGL000788)$$, especially those included by Baker (1982b, 1983c). Either those plots should be removed from the concept of CEGL000788 and added here, or this association should be combined with CEGL000788.
Similar NVC Types: No Data Available
note: No Data Available
Physiognomy and Structure: No Data Available
Floristics: This association has been documented only from Dinosaur National Monument. Without additional data, there is no global information.
Dynamics: This association has been documented only from Dinosaur National Monument. Without additional data, there is no global information.
Environmental Description: This association has been documented only from Dinosaur National Monument. Without additional data, there is no global information.
Geographic Range: This association has only been described from stands in Dinosaur National Monument in northwestern Colorado and adjacent eastern Utah. It likely also occurs on other highlands in the vicinity that are underlain by limestone, such as Cold Springs Mountain.
Nations: US
States/Provinces: CO, UT
Plot Analysis Summary:
http://vegbank.org/natureserve/ELEMENT_GLOBAL.2.785431
Confidence Level: Low
Confidence Level Comments: No Data Available
Grank: GNR
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 | CEGL002819 Two-needle Pinyon - Utah Juniper / Bluebunch Wheatgrass - Cushion Plant Woodland | CEGL002819 | 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: = Pinus edulis - Juniperus osteosperma / Pseudoroegneria spicata - Cushion Plant Woodland (Coles et al. 2008a)
- Baker, W. L. 1982b. Natural vegetation of the Piceance Basin, Colorado. Appendix D, pages 1-113 in: J. S. Peterson and W. L. Baker, editors. Inventory of the Piceance Basin, Colorado. Unpublished report for the Bureau Land Management, Craig, CO.
- Baker, W. L. 1983c. Natural vegetation of part of northwestern Moffat County, Colorado. Unpublished report prepared for the State of Colorado Natural Areas Program, Department of Natural Resources, Denver by Colorado Natural Heritage Inventory, Denver.
- Coles, J., D. Cogan, D. Salas, A. Wight, G. Wakefield, J. Von Loh, and A. Evenden. 2008a. Vegetation classification and mapping project report, Dinosaur National Monument. Natural Resource Technical Report NPS/NCPN/NRTR-2008/112. National Park Service, Fort Collins, CO. 814 pp.
- Western Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Boulder, CO.