Print Report
CEGL003478 Purshia tridentata - Artemisia tridentata / Achnatherum hymenoides Shrubland
Type Concept Sentence: No Data Available
Common (Translated Scientific) Name: Antelope Bitterbrush - Big Sagebrush / Indian Ricegrass 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 1980 and 2380 m (6500-7800 feet) elevation on northeast to southeast aspects. Slopes vary from flat to somewhat steep, and stands prefer lower slope positions. Soils are sand to sandy loam, usually derived from granitic rock. This vegetation is characterized by an open to intermittent short-shrub canopy between 0.5-1 m in height. Artemisia tridentata and Purshia tridentata codominate, with trace amounts of Chrysothamnus viscidiflorus and Prunus andersonii often present. The herbaceous layer is sparse and dominated by graminoids. Achnatherum hymenoides is characteristic. Two forbs, Gayophytum ramosissimum and Lupinus argenteus, are often present in trace amounts. Bromus tectorum (exotic) is the most common graminoid. Other common graminoids in order of declining importance include Elymus elymoides, Leymus cinereus, and/or Achnatherum speciosum.
Diagnostic Characteristics: No Data Available
Rationale for Nominal Species or Physiognomic Features: No Data Available
Classification Comments: ~Purshia tridentata / Achnatherum hymenoides Shrubland (CEGL001058)$$ in the USNVC is very similar to this association, though the environmental descriptors vary. Review is needed to determine if they are the same type. 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: No Data Available
Dynamics: No Data Available
Environmental Description: No Data Available
Geographic Range: This association is currently only known from several locations near Mount Dana to the 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.2.687207
Confidence Level: Low - Poorly Documented
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 | CEGL003478 Antelope Bitterbrush - Big Sagebrush / Indian Ricegrass Shrubland | CEGL003478 | 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 - Artemisia tridentata / Achnatherum hymenoides (Sawyer et al. 2009) [35.200.02]
= Purshia tridentata - Artemisia tridentata/Achnatherum hymenoides Shrubland [Provisional] (Keeler-Wolf et al. 2012)
= Purshia tridentata - Artemisia tridentata/Achnatherum hymenoides 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.