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CEGL008632 Pinus jeffreyi - Abies magnifica Woodland
Type Concept Sentence: No Data Available
Common (Translated Scientific) Name: Jeffrey Pine - California Red Fir Woodland
Colloquial Name: No Data Available
Hierarchy Level: Association
Type Concept: This association occurs on the eastern slopes of the upper montane of the Sierra Nevada, California. It is found at the highest elevations of all the Pinus jeffreyi-dominated communities, ranging from 2225-2775 m (7300-9100 feet), but typically above 2590 m (8500 feet). Aspects are generally southeastern through southwestern on slopes that are commonly somewhat steep to steep. Soils are derived from granitic bedrock or pumice cinders. Soils are characteristically deep and are gravelly sands. Soils are typically excessively drained, and are warm, given the dominant aspects. Stands in this association are somewhat open forests with sparse understories composed of scattered shrub and herb patches. The overstory is distinguished by the presence of Pinus jeffreyi, which averages 26%. Abies magnifica is generally present as well, but sometimes occurs in the middle and lower layers of the tree canopy. Pinus contorta var. murrayana is an infrequent component of the composition. Shrub cover is very low on most sites; however, in the southern portion of the range stands can be dominated by Chrysolepis sempervirens. In the north, Artemisia tridentata, Purshia tridentata, and Chrysothamnus viscidiflorus are present in a few cases. Arabis platysperma, Eriogonum nudum, and Achnatherum occidentale are the most frequent species in the herb layer, which averages between 20 and 25% cover.
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: Stands in this association are somewhat open forests with sparse understories composed of scattered shrub and herb patches. The overstory is distinguished by the presence of Pinus jeffreyi, which averages 26%. Abies magnifica is generally present as well, but sometimes occurs in the middle and lower layers of the tree canopy. Pinus contorta var. murrayana is an infrequent component of the composition. Shrub cover is very low on most sites; however, in the southern portion of the range stands can be dominated by Chrysolepis sempervirens. In the north, Artemisia tridentata, Purshia tridentata, and Chrysothamnus viscidiflorus are present in a few cases. Arabis platysperma, Eriogonum nudum, and Achnatherum occidentale are the most frequent species in the herb layer, which averages between 20 and 25% cover. Conifer regeneration is among the lowest of any sites in the upper montane. Both Abies magnifica and Pinus jeffreyi seedlings occur on the majority of sites, although in low numbers.
Dynamics: No Data Available
Environmental Description: This association occurs at the highest elevations of all the Pinus jeffreyi-dominated communities, ranging from 2225 to 2775 m (7300-9100 feet), but typically above 2590 m (8500 feet). Aspects are generally southeastern through southwestern on slopes that are commonly somewhat steep to steep. Stands commonly occupy upper and middle slope positions. Soils are derived from granitic bedrock or pumice cinders. Soils are characteristically deep and are gravelly sands. Soils are typically excessively drained, and are warm, given the dominant aspects.
Geographic Range: This association occurs on the eastern slopes of the upper montane of the Sierra Nevada, California. Stands can be somewhat extensive but in most cases are 10 to 50 acres in size.
Nations: US
States/Provinces: CA
Plot Analysis Summary:
http://vegbank.org/natureserve/ELEMENT_GLOBAL.2.685434
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 | A3676 Jeffrey Pine - Washoe Pine Mixed Conifer Woodland Alliance | A3676 | 1.B.2.Nd.2.a |
| Association | CEGL008632 Jeffrey Pine - California Red Fir Woodland | CEGL008632 | 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 - Abies magnifica (Sawyer et al. 2009) [87.020.39]
= Pinus jeffreyi - Abies magnifica Woodland (Keeler-Wolf et al. 2012)
= Pinus jeffreyi - Abies magnifica 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.
- 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.