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CEGL008714 Pinus jeffreyi / Quercus vacciniifolia Sierra Nevada Woodland
Type Concept Sentence: No Data Available
Common (Translated Scientific) Name: Jeffrey Pine / Huckleberry Oak Sierra Nevada Woodland
Colloquial Name: No Data Available
Hierarchy Level: Association
Type Concept: This woodland association is currently only known from Yosemite National Park in California, and the following description is based on occurrences there. Additional information will be added as it becomes available. Stands are found at mid elevations (1920-2590 m [6300-8500 feet]) on variable slopes (4-58%). These site are typically southeast- and southwest-facing and on the middle, upper and ridges of slopes. The microrelief of these sites are usually hummocky and broken. Soils are excessively to poorly drained and have more surface gravel than most nearby associations. Soil depth is moderately deep to deep (33-100+ cm [13-40+ inches]) with textures that are often sandy loam and sand from granitic parent material. The topsoil has a high coarse fragment cover. Stands form an open tree layer dominated by Pinus jeffreyi and an intermittent to dense understory shrub layer dominated by Quercus vacciniifolia. Abies lowiana and Abies magnifica are typically found here as well. In some cases Pinus jeffreyi is in near equal cover to Abies lowiana and Abies magnifica. The understory is characterized by Quercus vacciniifolia with usually lesser amounts of Arctostaphylos nevadensis. Other species that may occasionally be present include Ceanothus cordulatus. Herbaceous species may include Pedicularis semibarbata, Arabis platysperma, Eriogonum nudum, Gayophytum eriospermum, Erigeron breweri, Monardella odoratissima ssp. pallida, Elymus elymoides ssp. elymoides, and Achnatherum occidentale.
Diagnostic Characteristics: No Data Available
Rationale for Nominal Species or Physiognomic Features: No Data Available
Classification Comments: There are 4 association with Pinus jeffreyi and Quercus vacciniifolia designated in their names. Three of these are apparently somewhat rare and occur on serpentine habitats in the Siskiyou Mountains, while the fourth appears to be a common woodland type of the Sierra Nevada range in California. Further work needs to be done to review the floristics of each of these types to further elucidate their differences.
Similar NVC Types: No Data Available
note: No Data Available
Physiognomy and Structure: No Data Available
Floristics: Stands form an open tree layer dominated by Pinus jeffreyi and an intermittent to dense understory shrub layer dominated by Quercus vacciniifolia. Abies lowiana (= Abies concolor var. lowiana) and Abies magnifica are typically found here as well. In some cases Pinus jeffreyi is in near equal cover to Abies lowiana and Abies magnifica. The understory is characterized by Quercus vacciniifolia with usually lesser amounts of Arctostaphylos nevadensis. Other species that may occasionally be present include Ceanothus cordulatus. Herbaceous species may include Pedicularis semibarbata, Arabis platysperma, Eriogonum nudum, Gayophytum eriospermum, Erigeron breweri, Monardella odoratissima ssp. pallida, Elymus elymoides ssp. elymoides, and Achnatherum occidentale (Potter 1994).
Dynamics: No Data Available
Environmental Description: Stands are found at mid elevations (1920-2590 m [6300-8500 feet]) on variable slopes (4-58%). These site are typically southeast- and southwest-facing and on the middle, upper and ridges of slopes. The microrelief of these sites are usually hummocky and broken. Soils are excessively to poorly drained and have more surface gravel than most nearby associations. Soil depth is moderately deep to deep (33-100+ cm [13-40+ inches]) with textures that are often sandy loam and sand from granitic parent material. The topsoil has a high coarse fragment cover (Potter 1994).
Geographic Range: This woodland association is currently only known from Yosemite National Park and elsewhere in the Sierra Nevada of California. Additional range information will be added as it becomes available.
Nations: US
States/Provinces: CA
Plot Analysis Summary:
http://vegbank.org/natureserve/ELEMENT_GLOBAL.2.688215
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.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 | A3676 Jeffrey Pine - Washoe Pine Mixed Conifer Woodland Alliance | A3676 | 1.B.2.Nd.2.a |
| Association | CEGL008714 Jeffrey Pine / Huckleberry Oak Sierra Nevada Woodland | CEGL008714 | 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: = Pinus jeffreyi / Quercus vacciniifolia (Sawyer et al. 2009) [87.020.08]
= Pinus jeffreyi / Quercus vacciniifolia Woodland (Potter 1994)
= Pinus jeffreyi/Quercus vaccinifolia Woodland (Keeler-Wolf et al. 2012)
= Pinus jeffreyi / Quercus vacciniifolia Woodland (Potter 1994)
= Pinus jeffreyi/Quercus vaccinifolia Woodland (Keeler-Wolf et al. 2012)
- 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.
- Potter, D. A. 1994. Guide to forested communities of the upper montane in the central and southern Sierra Nevada. Technical Publication R5-ECOL-TP-003. USDA Forest Service, Pacific Southwest Region, San Francisco, CA.
- 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.
- Western Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Boulder, CO.