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CEGL002606 Pinus ponderosa / Purshia tridentata / Carex geyeri Woodland
Type Concept Sentence: No Data Available
Common (Translated Scientific) Name: Ponderosa Pine / Antelope Bitterbrush / Geyer''s Sedge Woodland
Colloquial Name: No Data Available
Hierarchy Level: Association
Type Concept: This woodland is known from the Ochoco Range and southern Blue Mountains of eastern Oregon and is reported from California and may occur in Washington. It is found between 1465-1650 m (4800-5400 feet) elevation on southerly aspects up to 25% slope. Soils are loams with varying amounts of silt, sand, and clay. Pinus ponderosa is the sole tree, averaging 42% cover. Purshia tridentata is the dominant shrub (13% cover) with minor amounts of Mahonia repens (2% cover) and occasional Cercocarpus ledifolius (4% cover), Symphoricarpos albus (3% cover), and Ceanothus velutinus (2% cover). Carex geyeri (37% cover) dominates the herb layer with occasional Achillea millefolium and Carex rossii. Periodic fires limit Purshia tridentata but maintain Pinus ponderosa.
Diagnostic Characteristics: No Data Available
Rationale for Nominal Species or Physiognomic Features: No Data Available
Classification Comments: This is a "climax" Ponderosa pine association. The three nominal taxa are clearly the dominants in their respective layers. This community is similar to ~Pinus ponderosa / Carex geyeri Woodland (CEGL000182)$$ (Johnson and Clausnitzer 1992) which lacks Purshia tridentata. It also resembles Pseudotsuga menziesii - Pinus ponderosa / Carex geyeri (Cole 1977b, Hall 1973), except it lacks Pseudotsuga menziesii and significant cover of Purshia tridentata. John et al. (1988) report Pinus ponderosa / Purshia tridentata associations from the Yakima Indian Reservation, in extreme south-central Washington. These plots have low cover and high consistency of Carex geyeri, but seem otherwise similar to this association. These plots probably include a few examples of this type, and some of ~Pinus ponderosa / Purshia tridentata / Festuca idahoensis Woodland (CEGL000195)$$.
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 not documented outside the southern Blue Mountains and Ochoco Range. However, John et al. (1988) report a similar type from extreme south-central Washington.
Nations: US
States/Provinces: CA, OR, WA?
Plot Analysis Summary:
http://vegbank.org/natureserve/ELEMENT_GLOBAL.2.686391
Confidence Level: Low - Poorly Documented
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.Nb Rocky Mountain Forest & Woodland Division | D194 | 1.B.2.Nb |
| Macrogroup | 1.B.2.Nb.2 Ponderosa Pine - Douglas-fir - Limber Pine Central Rocky Mountain Dry Forest Macrogroup | M501 | 1.B.2.Nb.2 |
| Group | 1.B.2.Nb.2.a Ponderosa Pine Central Rocky Mountain Open Woodland Group | G213 | 1.B.2.Nb.2.a |
| Alliance | A3446 Ponderosa Pine / Shrub Understory Central Rocky Mountain Woodland Alliance | A3446 | 1.B.2.Nb.2.a |
| Association | CEGL002606 Ponderosa Pine / Antelope Bitterbrush / Geyer''s Sedge Woodland | CEGL002606 | 1.B.2.Nb.2.a |
Concept Lineage: No Data Available
Predecessors: No Data Available
Obsolete Names: No Data Available
Obsolete Parents: No Data Available
Synonomy: ? Pinus ponderosa / Purshia tridentata (John et al. 1988)
? Pseudotsuga menziesii - Pinus ponderosa / Carex geyeri (Cole 1977b)
? Pseudotsuga menziesii - Pinus ponderosa / Carex geyeri (Hall 1973)
? Pseudotsuga menziesii - Pinus ponderosa / Carex geyeri (Cole 1977b)
? Pseudotsuga menziesii - Pinus ponderosa / Carex geyeri (Hall 1973)
- Bourgeron, P. S., and L. D. Engelking, editors. 1994. A preliminary vegetation classification of the western United States. Unpublished report. The Nature Conservancy, Western Heritage Task Force, Boulder, CO. 175 pp. plus appendix.
- Cole, D. N. 1977b. Man''s impact on wilderness: An example from Eagle Cap Wilderness, northeastern Oregon. Ph.D. dissertation, Oregon State University, Corvallis. 307 pp.
- Hall, F. C. 1973. Plant communities of the Blue Mountains in eastern Oregon and southeastern Washington. R6 Area Guide 3-1. USDA Forest Service, Pacific Northwest Region, Portland, OR. 62 pp.
- John, T., D. Tart, and R. Clausnitzer. 1988. Forest associations of the Yakama Indian Reservation. Draft. Yakama Indian Nation. Toppenish, WA. 133 pp.
- Johnson, C. G., and R. R. Clausnitzer. 1992. Plant associations of the Blue and Ochoco mountains. R6-ERW-TP-036-92. USDA Forest Service, Pacific Northwest Region, Wallowa-Whitman National Forest. 163 pp. plus appendices.
- Kagan, J. S., J. A. Christy, M. P. Murray, and J. A. Titus. 2004. Classification of native vegetation of Oregon. January 2004. Oregon Natural Heritage Information Center, Portland. 52 pp.
- WNHP [Washington Natural Heritage Program]. 2018. Unpublished data files. Washington Natural Heritage Program, Department of Natural Resources, Olympia, WA.
- Western Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Boulder, CO.