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CEGL004007 Pinus edulis - Juniperus osteosperma / Quercus turbinella Woodland
Type Concept Sentence: No Data Available
Common (Translated Scientific) Name: Two-needle Pinyon - Utah Juniper / Sonoran Scrub Oak Woodland
Colloquial Name: No Data Available
Hierarchy Level: Association
Type Concept: This woodland association is known from Canyon de Chelly and Pipe Springs national monuments in northern Arizona in the southern Colorado Plateau, and this description is based on occurrence there. The association has also been reported from Grand Canyon National Park, Glen Canyon National Recreation Area, and Mojave National Preserve in California. In the southern Colorado Plateau, it occurs on canyon slopes, rims and mesatops from 1536 to 2104 m (5040-6900 feet) elevation. Stands occur on gentle to steep slopes (2-35%) on warmer southern and western aspects. The substrates are generally shallow, rocky sandy loam to silt loam soils. The surface typically has moderate to high cover of boulders or rock outcrops. Cover by lichens is moderate to high in some stands. The vegetation is characterized by an open to moderately dense tree canopy (10-50% cover) codominated by Pinus edulis and Juniperus osteosperma. Very open stands may have tree cover between 5-10% cover. Quercus turbinella dominates or codominates the open to moderately dense shrub layer. Other shrubs may be present, including Artemisia bigelovii, Chrysothamnus greenei, Ephedra viridis, Fendlera rupicola, Opuntia phaeacantha, Opuntia polyacantha var. polyacantha, and Cylindropuntia whipplei. Herbaceous cover is variable, ranging from sparse to moderately dense, but is often dominated the perennial graminoid Bouteloua gracilis with scattered perennial forbs. Exotic annual grass Bromus tectorum is present in some stands.
Diagnostic Characteristics: No Data Available
Rationale for Nominal Species or Physiognomic Features: No Data Available
Classification Comments: No Data Available
Similar NVC Types: No Data Available
note: No Data Available
Physiognomy and Structure: No Data Available
Floristics: This woodland is characterized by an open to moderately dense tree canopy (10-50% cover) codominated by Pinus edulis and Juniperus osteosperma. Very open stands may have tree cover between 5 and 10%. Quercus turbinella dominates or codominates the open to moderately dense shrub layer. Other shrubs may be present, including Amelanchier utahensis, Artemisia bigelovii, Chrysothamnus greenei, Ephedra viridis, Fendlera rupicola, Opuntia phaeacantha, Opuntia polyacantha var. polyacantha, Cylindropuntia whipplei (= Opuntia whipplei), and Purshia stansburiana. Additional shrubs contribute low cover and include Ericameria nauseosa, Gutierrezia sarothrae, Opuntia polyacantha var. erinacea (= Opuntia erinacea), Rhus trilobata var. trilobata (= Rhus aromatica var. trilobata), Shepherdia rotundifolia, Sclerocactus whipplei, and Yucca angustissima var. kanabensis (= Yucca kanabensis). Herbaceous cover is variable, ranging from sparse to moderate, but is often dominated the perennial graminoid Bouteloua gracilis with scattered perennial forbs. Other common species include grasses Achnatherum hymenoides, Aristida purpurea, Bouteloua barbata, Bouteloua curtipendula, Hesperostipa comata, Pleuraphis jamesii, Poa fendleriana, and forbs such as Brickellia microphylla var. scabra, Gutierrezia microcephala, Heterotheca villosa, Lesquerella fendleri, and Stephanomeria minor var. minor. Exotic annual grass Bromus tectorum is present in some stands.
Dynamics: No Data Available
Environmental Description: This woodland association is known from Canyon de Chelly and Pipe Springs national monuments in the southern Colorado Plateau of northern Arizona. It occurs on canyon slopes, rims, and mesatops from 1536 to 2104 m (5040-6900 feet) elevation. Stands occur on gentle to steep slopes (2-35%) on warmer southern and western aspects. The substrates are generally shallow, rocky sandy loam to silt loam soils. The surface typically has moderate to high cover of boulders or rock outcrops. Cover by lichens is moderate to high in some stands.
Geographic Range: This woodland is known from Canyon de Chelly and Pipe Springs national monuments in the southern Colorado Plateau of northern Arizona. The association has also been reported from Grand Canyon National Park, Glen Canyon National Recreation Area, and Mojave National Preserve in California.
Nations: US
States/Provinces: AZ, CA, UT
Plot Analysis Summary:
http://vegbank.org/natureserve/ELEMENT_GLOBAL.2.794980
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 | A3573 Two-needle Pinyon - Utah Juniper Colorado Plateau Shrubby Open Woodland Alliance | A3573 | 1.B.2.Nc.1.a |
| Association | CEGL004007 Two-needle Pinyon - Utah Juniper / Sonoran Scrub Oak Woodland | CEGL004007 | 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 / Quercus turbinella Woodland (Thomas et al. 2010)
= Pinus edulis-Juniperus osteosperma / Quercus turbinella Association (Evens et al. 2014)
= Pinus edulis-Juniperus osteosperma / Quercus turbinella Association (Evens et al. 2014)
- Coles, J., A. Wight, J. Von Loh, K. Schulz, and A. Evenden. 2008b. Vegetation classification and mapping project report, Pipe Spring National Monument. Natural Resource Technical Report NPS/NCPN/NRTR--2008/122. National Park Service, Fort Collins, CO. 196 pp.
- Evens, J. M., K. Sikes, D. Hastings, and J. Ratchford. 2014. Vegetation alliance descriptions for Lake Mead National Recreation Area, Death Valley National Park and Mojave National Preserve. Unpublished report submitted to USDI National Park Service, Mojave Desert Network Inventory and Monitoring Program. California Native Plant Society, Sacramento, CA.
- Kearsley, M. J. C., K. Green, M. Tukman, M. Reid, M. Hall, T. J. Ayers, and K. Christie. 2015. Grand Canyon National Park-Grand Canyon / Parashant National Monument vegetation classification and mapping project. Natural Resource Report NPS/GRCA/NRR--2015/913. National Park Service, Fort Collins, CO. 75 pp. plus appendices.
- Reid, M. S., and M. E. Hall. 2010. Vegetation classification of Grand Canyon National Park. Draft report submitted to National Park Service, Fort Collins, CO.
- Tendick, A., J. Spence, M. Reid, K. Shulz, G. Kittel, K. Green, A. Wight, and G. Wakefield. 2017. Vegetation classification and mapping project report, Glen Canyon National Recreation Area and Rainbow Bridge National Monument. Natural Resource Report NPS/NCPN/NRR—2017/1500. National Park Service, Fort Collins, CO. 1464 pp.
- Thomas, K. A., M. L. McTeague, L. Ogden, K. Schulz, T. Fancher, R. Waltermire, and A. Cully. 2010. Vegetation classification and distribution mapping report: Canyon de Chelly National Monument. National Resource Technical Report NPS/SCPN/NRTR-2010/306. National Park Service, Fort Collins, CO. 338 pp.
- Western Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Boulder, CO.