Print Report
CEGL003477 Purshia tridentata - Artemisia tridentata / Eriogonum umbellatum Shrubland
Type Concept Sentence: No Data Available
Common (Translated Scientific) Name: Antelope Bitterbrush - Big Sagebrush / Sulphur-flower Buckwheat Shrubland
Colloquial Name: No Data Available
Hierarchy Level: Association
Type Concept: This shrubland 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 of this association are found between 2195 and 3080 m (7200-10,100 feet) elevation. Aspects do not seem to differentiate this type. Slopes are moderate to steep, and stands prefer lower slopes and midslopes. Soils are sandy to silt loams derived from granitic and other igneous rock. This vegetation forms an open to intermittent canopy between 0.5-2 m in height. The canopy is dominated by Purshia tridentata usually with Artemisia tridentata codominating. Eriogonum umbellatum is the diagnostic shrub in the subcanopy. Other common shrub associates contributing small amounts of cover may include Chrysothamnus viscidiflorus, Tetradymia canescens, Prunus andersonii, Eriogonum davidsonii, Linanthus pungens, and/or Ribes velutinum. The herbaceous layer is sparse and cover is split fairly equally between graminoids and forbs. The most common forb associates include Lupinus argenteus, Phacelia ramosissima, Eriastrum wilcoxii, Mentzelia congesta, Phacelia bicolor, and/or Stephanomeria exigua. The most common graminoids include Achnatherum hymenoides, Elymus elymoides, and/or Bromus tectorum (exotic).
Diagnostic Characteristics: No Data Available
Rationale for Nominal Species or Physiognomic Features: No Data Available
Classification Comments: The subspecies of Artemisia tridentata in this association is likely to be Artemisia tridentata ssp. vaseyana.
Similar NVC Types: No Data Available
note: No Data Available
Physiognomy and Structure: No Data Available
Floristics: This vegetation forms an open to intermittent canopy between 0.5-2 m in height. The canopy is dominated by Purshia tridentata usually with Artemisia tridentata codominating. Eriogonum umbellatum is the diagnostic shrub in the subcanopy. Other common shrub associates contributing small amounts of cover may include Chrysothamnus viscidiflorus, Tetradymia canescens, Prunus andersonii, Eriogonum davidsonii, Linanthus pungens (= Leptodactylon pungens), and/or Ribes velutinum. The herbaceous layer is sparse and cover is split fairly equally between graminoids and forbs. The most common forb associates include Lupinus argenteus, Phacelia ramosissima, Eriastrum wilcoxii, Mentzelia congesta, Phacelia bicolor, and/or Stephanomeria exigua. The most common graminoids include Achnatherum hymenoides, Elymus elymoides, and/or Bromus tectorum (exotic).
Dynamics: No Data Available
Environmental Description: Stands of this association are found between 2195 and 3080 m (7200-10,100 feet) elevation. Aspects do not seem to differentiate this type. Slopes are moderate to steep, and stands prefer lower slopes and midslopes. Soils are sandy to silt loams derived from granitic and other igneous rock.
Geographic Range: This shrubland association is currently only known from scattered locations throughout the park and environs east of the Sierra Crest in Yosemite National Park in 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.2.687066
Confidence Level: Low
Confidence Level Comments: No Data Available
Grank: GNR
Greasons: No Data Available
| Type | Name | Database Code | Classification Code |
|---|---|---|---|
| Class | 3 Desert & Semi-Desert Class | C03 | 3 |
| Subclass | 3.B Cool Semi-Desert Scrub & Grassland Subclass | S11 | 3.B |
| Formation | 3.B.1 Cool Semi-Desert Scrub & Grassland Formation | F033 | 3.B.1 |
| Division | 3.B.1.Ne Western North American Cool Semi-Desert Scrub & Grassland Division | D040 | 3.B.1.Ne |
| Macrogroup | 3.B.1.Ne.3 Big Sagebrush - Threetip Sagebrush - Antelope Bitterbrush Steppe & Shrubland Macrogroup | M169 | 3.B.1.Ne.3 |
| Group | 3.B.1.Ne.3.b Basin Big Sagebrush - Threetip Sagebrush - Antelope Bitterbrush Big Sagebrush Steppe & Shrubland Group | G302 | 3.B.1.Ne.3.b |
| Alliance | A3179 Antelope Bitterbrush - Big Sagebrush Mesic Steppe & Shrubland Alliance | A3179 | 3.B.1.Ne.3.b |
| Association | CEGL003477 Antelope Bitterbrush - Big Sagebrush / Sulphur-flower Buckwheat Shrubland | CEGL003477 | 3.B.1.Ne.3.b |
Concept Lineage: No Data Available
Predecessors: No Data Available
Obsolete Names: No Data Available
Obsolete Parents: No Data Available
Synonomy: = Purshia tridentata / Eriogonum umbellatum (Sawyer et al. 2009) [35.200.05]
>< Purshia tridentata-Artemisia tridentata-Symphoricarpos rotundifolius Shrubland [Provisional] (Keeler-Wolf et al. 2012)
>< Purshia tridentata-Artemisia tridentata-Tetradymia canescens Shrubland [Provisional] (Keeler-Wolf et al. 2012)
>< Purshia tridentata-Artemisia tridentata/Achnatherum hymenoides Shrubland [Provisional] (Keeler-Wolf et al. 2012)
>< Purshia tridentata-Artemisia tridentata/Achnatherum nevadense-(Achnatherum nelsonii ssp. dorei) Shrubland [Provisional] (Keeler-Wolf et al. 2012)
>< Purshia tridentata-Artemisia tridentata-Symphoricarpos rotundifolius Shrubland [Provisional] (Keeler-Wolf et al. 2012)
>< Purshia tridentata-Artemisia tridentata-Tetradymia canescens Shrubland [Provisional] (Keeler-Wolf et al. 2012)
>< Purshia tridentata-Artemisia tridentata/Achnatherum hymenoides Shrubland [Provisional] (Keeler-Wolf et al. 2012)
>< Purshia tridentata-Artemisia tridentata/Achnatherum nevadense-(Achnatherum nelsonii ssp. dorei) Shrubland [Provisional] (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.