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CEGL002331 Pinus edulis - Juniperus osteosperma / Artemisia nova Woodland
Type Concept Sentence: No Data Available
Common (Translated Scientific) Name: Two-needle Pinyon - Utah Juniper / Black Sagebrush Woodland
Colloquial Name: No Data Available
Hierarchy Level: Association
Type Concept: This association occurs in western Colorado, eastern Utah and northeastern Arizona. This woodland association typically has an open tree canopy (10-60% cover) dominated by short evergreen trees 2-10 m tall. Pinus edulis and Juniperus osteosperma dominate and scattered Pseudotsuga menziesii may be present at higher elevations. Shrubs provide low to moderate cover. The dwarf-shrub Artemisia nova is the most abundant shrub, usually with less than 20% cover. A number of herbaceous species can be found across the range of this association and includes graminoids such as Achnatherum hymenoides, Bouteloua gracilis, Carex spp., Elymus elymoides, Koeleria macrantha, and Poa fendleriana and forbs Antennaria parvifolia, Arabis spp., Hymenoxys richardsonii, Petradoria pumila, Phlox spp., and many others. Sites are nearly level to moderately steep and tend toward northern aspects on the higher areas. Stands occur on canyon rims, mesas, hills, ridgetops, and upper slopes. Elevation ranges from 1772 to 2518 m (5800-8260 feet). The soils are shallow and rapidly drained sandy loam to silt clay loam and sandy clay soil textures. Parent materials are often sandstones or limestones but can also be eolian deposits or shale.
Diagnostic Characteristics: No Data Available
Rationale for Nominal Species or Physiognomic Features: No Data Available
Classification Comments: This association is largely known and described from National Park Service inventory efforts in the Colorado Plateau.
Similar NVC Types: No Data Available
note: No Data Available
Physiognomy and Structure: No Data Available
Floristics: This woodland association ranges from a moderately dense to a more typically open tree canopy (10-60% cover) dominated by short evergreen trees 2-10 m tall. Pinus edulis and Juniperus osteosperma dominate the tree canopy and may form a sparse subcanopy 2-5 m tall where the upper canopy is taller. In most stands, Pinus edulis and Juniperus osteosperma each have between 3 and 35% canopy cover, although in some sparsely vegetated stands, they may have less. Shrubs are present but provide low to moderate cover. The dwarf-shrub Artemisia nova is the most abundant shrub, usually with less than 20% cover, but stands with up to 50% cover have been observed. Other shrubs that are typically found include Amelanchier utahensis, Artemisia tridentata, Cercocarpus montanus, Chrysothamnus viscidiflorus, Chrysothamnus greenei, Ephedra viridis, Gutierrezia microcephala, Gutierrezia sarothrae, Purshia stansburiana, Purshia tridentata, Opuntia spp., Shepherdia rotundifolia, and Symphoricarpos longiflorus. Herbaceous species can be relatively diverse between stands, but any one stand usually has low to moderate diversity and less than 10% cover in aggregate. Common species include Achnatherum hymenoides, Bouteloua gracilis, Carex spp., Elymus elymoides, Koeleria macrantha, and Poa fendleriana. Forbs can include Antennaria parvifolia, Arabis spp., Hymenoxys richardsonii, Petradoria pumila, Phlox spp., and many others.
Dynamics: Fire is likely to convert stands of this association to forb- or graminoid-dominated associations.
Environmental Description: This Colorado Plateau association occurs on the higher areas of local topographical features such as canyon rims, mesas, hills, ridgetops, and upper slopes. Sites are nearly level to moderately steep and tend toward northern aspects, although stands are found on other aspects. Elevation ranges from 1772 to 2518 m (5800-8260 feet). The soils are variable and include sandy loam, sandy clay loam, silt loam, and silt clay loam soil textures. They tend to be shallow and rapidly drained. Parent materials are often sandstones but can also be eolian deposits, limestone, or shale. The unvegetated surface is composed of litter, bare soil, bedrock, and large and small rocks. Cryptogams often have moderate to high cover.
Geographic Range: This association is found on the Colorado Plateau and western slope of the southern Rocky Mountains in western and northern Colorado, southern and eastern Utah and northeastern Arizona.
Nations: US
States/Provinces: AZ, CO, UT
Plot Analysis Summary:
http://vegbank.org/natureserve/ELEMENT_GLOBAL.2.758221
Confidence Level: High
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 | CEGL002331 Two-needle Pinyon - Utah Juniper / Black Sagebrush Woodland | CEGL002331 | 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 / Artemisia nova Woodland (Von Loh et al. 2007)
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