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CEGL001423 Artemisia nova / Poa secunda Shrubland
Type Concept Sentence: No Data Available
Common (Translated Scientific) Name: Black Sagebrush / Sandberg Bluegrass Shrubland
Colloquial Name: No Data Available
Hierarchy Level: Association
Type Concept: This plant association is discontinuously distributed from southeastern Oregon to southeastern and central Idaho, with a disjunct occurrence in western Colorado. It is purported to occur in California and expected to occur in northern Nevada and Utah. The association has been reported from a wide variety of habitats at elevations ranging from about 1525 to 2745 m (5000-9000 feet). Stands are on shallow, rocky and gravelly calcareous soils that may be of volcanic origin or derived from limestone. Although it is often in mosaic with Artemisia tridentata or Juniperus spp. stands, this association does not support significant cover or reproduction of these species, nor perennial grasses other than Poa secunda. Some (but not all) stands may represent overgrazed stands of ~Artemisia nova / Pseudoroegneria spicata Shrubland (CEGL001424)$$. Artemisia nova / Poa secunda stands are expected to have low amounts of other shrubs, such as Artemisia arbuscula, Artemisia tridentata ssp. vaseyana, Chrysothamnus viscidiflorus, Eriogonum microthecum, and Tetradymia canescens. Other herbs to be expected in these stands include perennial grasses, such as Achnatherum spp., Koeleria macrantha, and Elymus elymoides, and forbs common on shallow soils, such as Balsamorhiza hookeri, Castilleja spp., Eriogonum spp., Petradoria pumila, Phlox spp., and Penstemon spp. Its presence in Colorado may represent another Artemisia nova association that has been degraded by grazing until only Poa secunda and Koeleria macrantha remain.
Diagnostic Characteristics: No Data Available
Rationale for Nominal Species or Physiognomic Features: No Data Available
Classification Comments: It is probably distinct from other Artemisia nova associations in lacking significant cover of perennial grasses other than Poa secunda (e.g., Festuca idahoensis, Hesperostipa comata, and Pseudoroegneria spicata). In south-central and southeastern Idaho, the plant association is often observed in a mosaic with Juniperus osteosperma associations (IDCDC 2001). In such mosaic areas of Idaho and Nevada, researchers have recognized a Juniperus osteosperma / Artemisia nova / Poa secunda plant association (Rust 1999). This association may have as little as 1% cover of Juniperus osteosperma, though its presence is used to indicate the site''s potential. ~Artemisia nova / Poa secunda Shrubland (CEGL001423)$$ lacks reproducing Juniperus osteosperma or other Juniperus spp. Hironaka et al. (1983) note the replacement of Pseudoroegneria spicata by Poa secunda in overgrazed stands of ~Artemisia nova / Pseudoroegneria spicata Shrubland (CEGL001424)$$. It is possible that some, but probably not all, stands of Artemisia nova / Poa secunda are early seral.
Similar NVC Types: No Data Available
note: No Data Available
Physiognomy and Structure: No Data Available
Floristics: This association is characterized by a sparse to moderate shrub layer dominated by Artemisia nova (average 20% cover); other shrubs present may include Artemisia arbuscula, Artemisia tridentata ssp. vaseyana, Chrysothamnus viscidiflorus, Eriogonum microthecum, and Tetradymia canescens. The herbaceous layer also tends to have 10% or less cover and is dominated by Poa secunda. Other herbs to be expected in these stands include perennial grasses, such as Achnatherum spp., Koeleria macrantha, and Elymus elymoides, and forbs common on shallow soils, such as Balsamorhiza hookeri, Castilleja spp., Eriogonum spp., Petradoria pumila, Phlox spp., and Penstemon spp.
Dynamics: Some stands may represent overgrazed stands of ~Artemisia nova / Pseudoroegneria spicata Shrubland (CEGL001424)$$ or ~Artemisia nova / Hesperostipa comata Shrubland (CEGL001425)$$.
Environmental Description: This plant association is distributed discontinuously from southeastern Oregon to southeastern and central Idaho. An isolated occurrence has been reported from western Colorado. It is purported to occur in California and expected to occur in northern Nevada and Utah. The association has been reported from a wide variety of habitats and slope angles, including ridges, alluvial fans and hill slopes at elevations ranging from about 1525 m (5000 feet) on the Snake River Plain of eastern Idaho to 2745 m (9000 feet) in the Boulder Mountains of central Idaho. The Colorado stand is intermediate in elevation at 2384 m (7820 feet). Stands are on shallow, rocky and gravelly calcareous soils that may be of volcanic or sedimentary origin.
Geographic Range: Artemisia nova associations are widely distributed throughout the western United States. This plant association, however, is apparently an uncommon Artemisia nova type. It is found in southeastern Oregon and again in central, south-central, and southeastern Idaho (IDCDC unpubl. data 2001, ORNHP unpubl. data 2001). Its presence in Colorado may represent another Artemisia nova association that has been degraded by grazing until only Poa secunda and Koeleria macrantha remain. In Idaho, the association is known from the Boulder Mountains in Custer County, Cassia County (near the Utah border), Bannock County (in the Portneuf Range), and at Menan Buttes on the Snake River Plain. It is purported to occur in California and is expected to occur in (but not documented in) northern Nevada and Utah.
Nations: US
States/Provinces: CA?, CO, ID, NV, OR, UT?
Plot Analysis Summary:
http://vegbank.org/natureserve/ELEMENT_GLOBAL.2.683729
Confidence Level: Low
Confidence Level Comments: No Data Available
Grank: G3
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.2 Little Sagebrush - Black Sagebrush - Scabland Sagebrush Steppe & Shrubland Macrogroup | M170 | 3.B.1.Ne.2 |
| Group | 3.B.1.Ne.2.b Little Sagebrush - Bigelow''s Sagebrush - Black Sagebrush Steppe & Shrubland Group | G308 | 3.B.1.Ne.2.b |
| Alliance | A3222 Black Sagebrush Steppe & Shrubland Alliance | A3222 | 3.B.1.Ne.2.b |
| Association | CEGL001423 Black Sagebrush / Sandberg Bluegrass Shrubland | CEGL001423 | 3.B.1.Ne.2.b |
Concept Lineage: No Data Available
Predecessors: No Data Available
Obsolete Names: No Data Available
Obsolete Parents: No Data Available
Synonomy: = Artemisia nova / Poa sandbergii Habitat Type (Caicco and Wellner 1983f)
= Artemisia nova / Poa sandbergii Habitat Type (Hironaka et al. 1983)
= Artemisia nova / Poa secunda Shrubland (Rust 1999)
= Artemisia nova / Poa sandbergii Habitat Type (Hironaka et al. 1983)
= Artemisia nova / Poa secunda Shrubland (Rust 1999)
- 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.
- Caicco, S. L., and C. A. Wellner. 1983f. Research Natural Area recommendation for Menan Buttes. Unpublished report prepared for USDI Bureau of Land Management, Idaho Falls District, Idaho by Idaho Natural Areas Coordinating Committee. 10 pp.
- Coles, J., A. Tendick, J. Von Loh, G. Bradshaw, G. Manis, A. Wight, G. Wakefield, and A. Evenden. 2010. Vegetation classification and mapping project report, Black Canyon of the Gunnison National Park. Natural Resource Technical Report NPS/NCPN/NRTR--2010/361. National Park Service, Fort Collins, CO.
- Hironaka, M., M. A. Fosberg, and A. H. Winward. 1983. Sagebrush-grass habitat types of southern Idaho. Forestry, Wildlife, and Range Experiment Station Bulletin No. 15, University of Idaho, Moscow. 44 pp.
- IDCDC [Idaho Conservation Data Center]. No date. Unpublished data on file at Idaho Conservation Data Center, Department of Fish and Game, Boise, ID.
- 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.
- ORNHP [Oregon Natural Heritage Program]. No date. Unpublished data files. Oregon Natural Heritage Program, The Nature Conservancy, Portland, OR.
- Peterson, E. B. 2008. International Vegetation Classification alliances and associations occurring in Nevada with proposed additions. Nevada Natural Heritage Program, Carson City, NV. 348 pp.
- Rust, S. K. 1999. Pinyon-juniper woodland classification and description in Research Natural Areas of southeastern Idaho. In: S. B. Monson and R. Stevens, compilers. Proceedings: Ecology and management of pinyon-juniper communities within the interior west; 1997 September 15-18; Provo, UT. Proceedings RMRS-P-9. USDA Forest Service, Rocky Mountain Research Station, Ogden, UT. 411 pp.
- Tendick, A., J. Coles, P. Williams, G. Bradshaw, G. Manis, A. Wight, G. Wakefield, and A. Evenden. 2010. Vegetation classification and mapping project report, Curecanti National Recreation Area. Natural Resource Technical Report NPS/NCPN/NRTR--2010/408. National Park Service, Fort Collins, CO. 797 pp.
- Western Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Boulder, CO.