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CEGL002939 Pinus edulis - Juniperus osteosperma / Arctostaphylos patula Woodland
Type Concept Sentence: No Data Available
Common (Translated Scientific) Name: Two-needle Pinyon - Utah Juniper / Greenleaf Manzanita Woodland
Colloquial Name: No Data Available
Hierarchy Level: Association
Type Concept: This association is found on the Colorado Plateau of southern Utah on flat to gently sloping sites between 1707 and 2103 m (5600-6900 feet) elevation. Slope aspects tend toward western and southern, and parent materials are typically sandstone, although shale is possible. Soils are loamy sands, sandy loams, and clay loams and are rapidly drained. The unvegetated surface has moderate cover of bare soil and varying cover of cryptogams, litter, and small and large rocks. This woodland association has a short (2-10 m), open tree canopy (10-30% cover). Pinus edulis and Juniperus osteosperma are the most abundant tree species, each of which typically has from 5-25% cover. The shrub layer has moderate cover (5-30%) and can be fairly diverse. Arctostaphylos patula dominates the shrub layer with 5-30% cover. Other common shrubs include Amelanchier utahensis, Cercocarpus intricatus, Eriogonum microthecum, Opuntia spp., Quercus gambelii, and Shepherdia rotundifolia. The herbaceous layer has sparse to low cover and low to moderate species diversity. It may contain the graminoids Achnatherum hymenoides, Muhlenbergia pungens, and Poa fendleriana and the forbs Comandra umbellata, Penstemon eatonii, and Lepidium montanum.
Diagnostic Characteristics: No Data Available
Rationale for Nominal Species or Physiognomic Features: No Data Available
Classification Comments: On dry, rocky or slickrock sites on the Colorado Plateau, this pinyon-juniper woodland association may include stands with very open tree canopies (5-10% cover) in cases where the total vegetation cover is less than 15%. These stands may be similar to open Arctostaphylos patula shrublands with scattered pinyon and juniper trees but is considered to be a variation of the woodland type because of the ecological values of the trees.
Similar NVC Types: No Data Available
note: No Data Available
Physiognomy and Structure: No Data Available
Floristics: This woodland association typically has an open tree canopy (10-30% cover) that is 2-10 m tall, but some sparse, tree-dominated stands from extremely dry, rocky sites in the Colorado Plateau are included as a best fit. The dominant trees are Pinus edulis and Juniperus osteosperma, each of which typically has from 5-25% cover. The shrub layer has moderate cover (5-30%) and can have high species diversity. Arctostaphylos patula has 5-30% cover and dominates the shrub layer. Other common shrubs include Amelanchier utahensis, Cercocarpus intricatus, Eriogonum microthecum, Opuntia spp., Quercus gambelii, and Shepherdia rotundifolia. The herbaceous layer has sparse to low cover and low to moderate species diversity. It may contain the graminoids Achnatherum hymenoides, Muhlenbergia pungens, and Poa fendleriana and the forbs Comandra umbellata, Penstemon eatonii, and Lepidium montanum. A few stands observed on canyon rims in southeastern Utah are much sparser than average with total vegetation cover of 5-25% and total tree cover of 2-10%.
Dynamics: No Data Available
Environmental Description: This association occurs on flat to gently sloping sites between 1707 and 2103 m elevation. Slope aspects tend toward western and southern. Parent materials are typically sandstone, although some sites are on shale. Soils are loamy sands, sandy loams, and clay loams and are rapidly drained. The unvegetated surface has moderate cover of bare soil and varying cover of cryptogams, litter, and small and large rocks.
Geographic Range: This association occurs in southern Utah.
Nations: US
States/Provinces: UT
Plot Analysis Summary:
http://vegbank.org/natureserve/ELEMENT_GLOBAL.2.685061
Confidence Level: Moderate
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 | A3571 Two-needle Pinyon - Utah Juniper / Shrub Understory Foothill & Lower Montane Dry-Mesic Woodland Alliance | A3571 | 1.B.2.Nc.1.a |
| Association | CEGL002939 Two-needle Pinyon - Utah Juniper / Greenleaf Manzanita Woodland | CEGL002939 | 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 / Arctostaphylos patula Woodland (Cogan et al. 2004)
- 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.
- 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., J. Von Loh, A. Evenden, G. Manis, G. Wakefield. and A. Wight. 2008c. Vegetation classification and mapping project report, Natural Bridges National Monument. Natural Resource Technical Report NPS/NCPN/NRTR--2008/077. National Park Service, Fort Collins, CO. 390 pp.
- 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.
- Tendick, A., G. Kittel, J. Von Loh, P. Williams, D. Cogan, J. Coles, A. Wight, G. Wakefield, and A. Evenden. 2011b. Vegetation classification and mapping project report, Bryce Canyon National Park. Natural Resource Technical Report NPS/NCPN/NRTR--2011/442. National Park Service, Fort Collins, CO.
- Western Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Boulder, CO.