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CEGL000423 Pseudotsuga menziesii / Arctostaphylos patula Woodland
Type Concept Sentence: No Data Available
Common (Translated Scientific) Name: Douglas-fir / Greenleaf Manzanita Woodland
Colloquial Name: No Data Available
Hierarchy Level: Association
Type Concept: This minor woodland association has been reported from the mountains and plateaus of southern Utah. Elevation ranges from 1829-2653 m (6000-8700 feet). Sites are steep mid to lower slopes, often with eastern, northern or western aspects. Soils are typically loam or sandy loam. Parent materials are usually sandstone or limestone. This association is characterized by a typically open tree canopy (about 30% cover) that is dominated or codominated by Pseudotsuga menziesii, usually with Pinus ponderosa present to codominant. Scattered Pinus flexilis and Juniperus scopulorum trees may also be present. Arctostaphylos patula dominates the moderate to sparse shrub layer with Mahonia repens a common associate. Others shrub species present may include Acer glabrum, Amelanchier utahensis, Ceanothus spp., Cercocarpus ledifolius, Cercocarpus montanus, Purshia tridentata, Quercus gambelii, and Symphoricarpos oreophilus. The sparse herbaceous layer (<20% cover) is primarily composed of graminoids, such as Carex rossii, Achnatherum hymenoides, Elymus elymoides, Leymus salinus, Poa fendleriana, and Pseudoroegneria spicata. Forbs are sparse and may include Achillea millefolium, Astragalus miser, Clematis columbiana, Eriogonum racemosum, and Hymenoxys richardsonii.
Diagnostic Characteristics: No Data Available
Rationale for Nominal Species or Physiognomic Features: No Data Available
Classification Comments: This Pseudotsuga menziesii woodland is typically codominated by Pinus ponderosa and occurs at the lower elevation range of Pseudotsuga menziesii woodlands (Youngblood and Mauk 1985). Pinus ponderosa and Pseudotsuga menziesii codominate the tree canopy, often with Pinus ponderosa more abundant (Youngblood and Mauk 1985). This association is very similar to the more xeric ~Pinus ponderosa / Arctostaphylos patula Woodland (CEGL000842)$$, which may occur nearby, but this association is less xeric with Pseudotsuga menziesii dominating/codominating the tree canopy and the presence of mesophytic understory species such as Acer glabrum and Clematis columbiana (Graybosch and Buchanan 1983). More study is needed to clarify where to separate transition stands.
Similar NVC Types: No Data Available
note: No Data Available
Physiognomy and Structure: No Data Available
Floristics: This association is characterized by a typically open tree canopy (about 30% cover) that is dominated or codominated by Pseudotsuga menziesii, usually with Pinus ponderosa present to codominant. Scattered Pinus flexilis and Juniperus scopulorum trees may also be present. Arctostaphylos patula dominates the moderate to sparse shrub layer with Mahonia repens a common associate. Others shrub species present may include Acer glabrum, Amelanchier utahensis, Ceanothus spp., Cercocarpus ledifolius, Cercocarpus montanus, Purshia tridentata, Quercus gambelii, and Symphoricarpos oreophilus. The sparse herbaceous layer (<20% cover) is primarily composed of graminoids, such as Carex rossii, Achnatherum hymenoides (= Oryzopsis hymenoides), Elymus elymoides, Leymus salinus, Poa fendleriana, and Pseudoroegneria spicata. Forbs are sparse and may include Achillea millefolium, Astragalus miser, Clematis columbiana, Eriogonum racemosum, and Hymenoxys richardsonii.
Dynamics: No Data Available
Environmental Description: This minor woodland association has been reported from the mountains and plateaus of southern Utah. Elevation ranges from 1829-2653 m (6000-8700 feet). Sites are steep mid to lower slopes, often with eastern, northern or western aspects. Soils are typically loam or sandy loam. Parent materials are usually sandstone or limestone.
Geographic Range: No Data Available
Nations: US
States/Provinces: NV, UT
Plot Analysis Summary:
http://vegbank.org/natureserve/ELEMENT_GLOBAL.2.689159
Confidence Level: Low
Confidence Level Comments: No Data Available
Grank: G4
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.Nb Rocky Mountain Forest & Woodland Division | D194 | 1.B.2.Nb |
| Macrogroup | 1.B.2.Nb.1 White Fir - Douglas-fir - Blue Spruce Forest Macrogroup | M022 | 1.B.2.Nb.1 |
| Group | 1.B.2.Nb.1.c White Fir - Douglas-fir Southern Rocky Mountain Dry Forest Group | G226 | 1.B.2.Nb.1.c |
| Alliance | A3454 Douglas-fir Southern Rocky Mountain Forest & Woodland Alliance | A3454 | 1.B.2.Nb.1.c |
| Association | CEGL000423 Douglas-fir / Greenleaf Manzanita Woodland | CEGL000423 | 1.B.2.Nb.1.c |
Concept Lineage: No Data Available
Predecessors: No Data Available
Obsolete Names: No Data Available
Obsolete Parents: No Data Available
Synonomy: = Pinus ponderosa - Pseudotsuga menziesii Type (Graybosch and Buchanan 1983) [Pinus ponderosa and Pseudotsuga menziesii codominate this type, sometimes with Pinus ponderosa more abundant.]
? Pseudotsuga menziesii / Arctostaphylos patula (Sawyer et al. 2009) [82.200.53]
= Pseudotsuga menziesii / Arctostaphylos patula Habitat Type (Youngblood and Mauk 1985)
? Pseudotsuga menziesii / Arctostaphylos patula (Sawyer et al. 2009) [82.200.53]
= Pseudotsuga menziesii / Arctostaphylos patula Habitat Type (Youngblood and Mauk 1985)
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