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CEGL005814 Pseudotsuga menziesii - Quercus chrysolepis Forest
Type Concept Sentence: No Data Available
Common (Translated Scientific) Name: Douglas-fir - Canyon Live Oak Forest
Colloquial Name: No Data Available
Hierarchy Level: Association
Type Concept: This association is known from the Shasta-Trinity National Forest in the Klamath Province of northwestern California and Yosemite National Park in the Sierra Nevada. This association is widespread in the Klamath Province, occurring at low elevations (below 1370 m [4500 feet]) on north-facing slopes, but shifting to southerly exposures at higher elevations (between 1370-1675 m [4500-5500 feet]). The substrate is all pre-Cretaceous metamorphic rock, and the soils are largely Sheetiron-Josephine complex with annual precipitation averaging about 1018 mm (40 inches). Stands at Yosemite are found at mesic sites with some cold-air drainages, on low to mid elevations (1220-1615 m [4000-5300 feet]). Aspects are generally northerly but can be trending south (northeast to west) at its highest elevations in semi-protected locations. Often associated with riparian drainages, these sites are on moderate to somewhat steep (6-26°), convex slopes. Soil development is minimal with shallow to medium depths, and textures are mostly stony but range from stony to clay and of granitic parent material. Penetrability is easy to difficult.
Stands in the southern Klamath Province are dominated by Pseudotsuga menziesii and Quercus chrysolepis. Other species such as Arbutus menziesii and Acer macrophyllum are common, while they are rare or absent in the local stands of this association. Stands of this forest at Yosemite are dominated by Pseudotsuga menziesii and Quercus chrysolepis. Calocedrus decurrens, Umbellularia californica, Pinus ponderosa, and Quercus kelloggii are often present in the tree canopy. Other species that may be present include Abies lowiana, Alnus rhombifolia, Alnus incana, Acer macrophyllum, Cornus nuttallii, Rhododendron occidentale, Toxicodendron diversilobum, Ceanothus integerrimus, Corylus cornuta, Arctostaphylos viscida, Arctostaphylos patula, and Pteridium aquilinum. Stands in the Klamath Ecoregion differ somewhat from the local Yosemite stands. Thus, this association may actually be found to be different although the two main species are the same.
Stands in the southern Klamath Province are dominated by Pseudotsuga menziesii and Quercus chrysolepis. Other species such as Arbutus menziesii and Acer macrophyllum are common, while they are rare or absent in the local stands of this association. Stands of this forest at Yosemite are dominated by Pseudotsuga menziesii and Quercus chrysolepis. Calocedrus decurrens, Umbellularia californica, Pinus ponderosa, and Quercus kelloggii are often present in the tree canopy. Other species that may be present include Abies lowiana, Alnus rhombifolia, Alnus incana, Acer macrophyllum, Cornus nuttallii, Rhododendron occidentale, Toxicodendron diversilobum, Ceanothus integerrimus, Corylus cornuta, Arctostaphylos viscida, Arctostaphylos patula, and Pteridium aquilinum. Stands in the Klamath Ecoregion differ somewhat from the local Yosemite stands. Thus, this association may actually be found to be different although the two main species are the same.
Diagnostic Characteristics: No Data Available
Rationale for Nominal Species or Physiognomic Features: No Data Available
Classification Comments: These stands as defined in the Klamath Ecoregion by Taylor and Teare (1979a) differ somewhat from the local Yosemite stands. Thus, this association may warrant splitting, although the two main species are the same.
Similar NVC Types: No Data Available
note: No Data Available
Physiognomy and Structure: No Data Available
Floristics: This association has been described by Taylor and Teare (1979a). However, their description only includes stands in the southern Klamath Province. There, in addition to the abundant Pseudotsuga menziesii and Quercus chrysolepis, other species such as Arbutus menziesii and Acer macrophyllum are common, while they are rare or absent in the local stands of this association. Stands of this forest at Yosemite are dominated by Pseudotsuga menziesii and Quercus chrysolepis. Calocedrus decurrens, Umbellularia californica, Pinus ponderosa, and Quercus kelloggii are often present in the tree canopy. Other species that may be present include Abies lowiana (= Abies concolor var. lowiana), Alnus rhombifolia, Alnus incana, Acer macrophyllum, Cornus nuttallii, Rhododendron occidentale, Toxicodendron diversilobum, Ceanothus integerrimus, Corylus cornuta, Arctostaphylos viscida, Arctostaphylos patula, and Pteridium aquilinum. Stands in the Klamath Ecoregion differ somewhat from the local Yosemite stands. Thus, this association may actually be found to be different although the two main species are the same.
Dynamics: No Data Available
Environmental Description: According to Taylor and Teare (1979a) this association is the most widespread in their study area, occurring at low elevations (below 1370 m [4500 feet]) on north-facing slopes, but shifting to southerly exposures at higher elevations (between 1370-1675 m [4500-5500 feet]). The substrate is all pre-Cretaceous metamorphic rock, and the soils are largely Sheetiron-Josephine complex with annual precipitation averaging about 1018 mm (40 inches). Stands at Yosemite are found at mesic sites with some cold-air drainages, on low to mid elevations (1220-1615 m [4000-5300 feet]). Aspects are generally northerly but can be trending south (northeast to west) at its highest elevations in semi-protected locations. Often associated with riparian drainages, these sites are on moderate to somewhat steep (6-26°), convex slopes. Soil development is minimal with shallow to medium depths, and textures are mostly stony but range from stony to clay and of granitic parent material. Penetrability is easy to difficult.
Geographic Range: This association is also known from the Shasta-Trinity National Forest in the Klamath Province of northwestern California (Taylor and Teare 1979a) and Yosemite National Park in the Sierra Nevada (Keeler-Wolf et al. 2012).
Nations: US
States/Provinces: CA, OR
Plot Analysis Summary:
http://vegbank.org/natureserve/ELEMENT_GLOBAL.2.688346
Confidence Level: Moderate
Confidence Level Comments: No Data Available
Grank: G3?
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.Nd Vancouverian Forest & Woodland Division | D192 | 1.B.2.Nd |
| Macrogroup | 1.B.2.Nd.2 Incense-cedar - Jeffrey Pine - Sierra White Fir Forest Macrogroup | M023 | 1.B.2.Nd.2 |
| Group | 1.B.2.Nd.2.a Incense-cedar - Sugar Pine - Sierra White Fir Forest & Woodland Group | G344 | 1.B.2.Nd.2.a |
| Alliance | A3673 Ponderosa Pine - Incense-cedar - Douglas-fir Forest Alliance | A3673 | 1.B.2.Nd.2.a |
| Association | CEGL005814 Douglas-fir - Canyon Live Oak Forest | CEGL005814 | 1.B.2.Nd.2.a |
Concept Lineage: No Data Available
Predecessors: No Data Available
Obsolete Names: No Data Available
Obsolete Parents: No Data Available
Synonomy: = Pseudotsuga menziesii - Quercus chrysolepis (Sawyer et al. 2009) [82.300.03]
= Pseudotsuga menziesii - Quercus chrysolepis Forest (Keeler-Wolf et al. 2012)
= Pseudotsuga menziesii - Quercus chrysolepis Forest (Taylor and Teare 1979a)
= Quercus chrysolepis association (Odion et al. 2013)
= Pseudotsuga menziesii - Quercus chrysolepis Forest (Keeler-Wolf et al. 2012)
= Pseudotsuga menziesii - Quercus chrysolepis Forest (Taylor and Teare 1979a)
= Quercus chrysolepis association (Odion et al. 2013)
- Keeler-Wolf, T., M. Schindel, S. San, P. Moore, and D. Hickson. 2003a. Classification of the vegetation of Yosemite National Park and surrounding environs in Tuolumne, Mariposa, Madera and Mono counties, California. Unpublished report by NatureServe in cooperation with the California Native Plant Society and California Department of Fish and Game, Wildlife and Habitat Data Analysis Branch, Sacramento, CA.
- Keeler-Wolf, T., P. E. Moore, E. T. Reyes, J. M. Menke, D. N. Johnson, and D. L. Karavidas. 2012. Yosemite National Park vegetation classification and mapping project report. Natural Resource Technical Report NPS/YOSE/NRTR--2012/598. National Park Service, Fort Collins, CO.
- Odion, D. C., D. A. DiPaolo, L. C. Groshong, D. A. Sarr, and S. Mohren. 2013. Vegetation Inventory Project: Oregon Caves National Monument and proposed expansion area. Natural Resource Technical Report NPS/ORCA/NRTR--2013/782. National Park Service, Fort Collins, CO. 272 pp.
- Sawyer, J. O., T. Keeler-Wolf, and J. Evens. 2009. A manual of California vegetation. Second edition. California Native Plant Society, Sacramento CA. 1300 pp.
- Taylor, D. W., and K. A. Teare. 1979a. Ecological survey of the vegetation of the proposed Trelorita Research Natural Area, Shasta-Trinity National Forest, Trinity County, California. Unpublished report. USDA Forest Service, Pacific Southwest Research Station, Berkeley, CA.
- Western Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Boulder, CO.