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CEGL001572 Leymus triticoides - Poa secunda Wet Meadow
Type Concept Sentence: No Data Available
Common (Translated Scientific) Name: Beardless Wildrye - Sandberg Bluegrass Wet Meadow
Colloquial Name: No Data Available
Hierarchy Level: Association
Type Concept: This is an alkaline grassland described from the Warner Basin of Oregon, but seen in the Guano and Catlow valleys of south-central Oregon, from Inyo County, California, and almost certainly found elsewhere in the northern Basin and Range and likely occurs in Nevada. It is found in flat, alkaline wetlands, associated with playa lakes, or rarely seasonal streams. In Oregon, elevations range from 1220-1525 m (4000-5000 feet) in elevation. Leymus triticoides is the characteristic plant, with Poa secunda usually codominant. In the more alkaline areas, Distichlis spicata or Puccinellia spp. can be found, although the most alkaline expressions should be considered a different association. These moist, playa grasslands are distinctive in the very high, predominately rhizomatous grass cover, with frequencies of Leymus triticoides averaging over 85%.
Diagnostic Characteristics: No Data Available
Rationale for Nominal Species or Physiognomic Features: No Data Available
Classification Comments: While this is clearly a distinct habitat, the name is based on limited sampling. Kagan observed this in Warner Basin inventories in 1982. Odion et al. (1992) describe this from Inyo County, California.
Easterday and Mamone (1980) described three more alkaline Leymus triticoides associations (Elymus triticoides - Distichlis stricta, Elymus triticoides - Juncus balticus, and Elymus triticoides - Juncus balticus - Triglochin maritima) from the Warner Basin. These more alkaline types are not included in the regional classification, although on the basis of this review, it has been lumped as Leymus triticoides - Juncus balticus alkaline wetland in the Oregon classification, which recommends them as additions from Oregon and California. The distribution of either of the Leymus triticoides associations in Nevada must be determined.
The alliance placement of this type is probably wrong. It is a probably an intermittently flooded grassland.
Easterday and Mamone (1980) described three more alkaline Leymus triticoides associations (Elymus triticoides - Distichlis stricta, Elymus triticoides - Juncus balticus, and Elymus triticoides - Juncus balticus - Triglochin maritima) from the Warner Basin. These more alkaline types are not included in the regional classification, although on the basis of this review, it has been lumped as Leymus triticoides - Juncus balticus alkaline wetland in the Oregon classification, which recommends them as additions from Oregon and California. The distribution of either of the Leymus triticoides associations in Nevada must be determined.
The alliance placement of this type is probably wrong. It is a probably an intermittently flooded grassland.
Similar NVC Types: No Data Available
note: No Data Available
Physiognomy and Structure: No Data Available
Floristics: Leymus triticoides is the characteristic plant, with Poa secunda (= Poa juncifolia) usually codominant. In the more alkaline areas, Distichlis spicata or Puccinellia spp. can be found, although the most alkaline expressions should be considered a different association. These moist, playa grasslands are distinctive in the very high, predominately rhizomatous grass cover, with frequencies of Leymus triticoides averaging over 85%.
Dynamics: No Data Available
Environmental Description: It is found in flat, alkaline wetlands, associated with playa lakes, or rarely seasonal streams. In Oregon, elevations range from 1220-1525 m (4000-5000 feet) in elevation.
Geographic Range: These communities are currently only known from the Northern Great Basin. Published records are from south-central Oregon near the California-Nevada border, and in Inyo County, California. However, it is likely found in Nevada. Leymus triticoides is very widespread, but these moderately freshwater habitats appear to be much more restricted.
Nations: US
States/Provinces: CA, NV, OR
Plot Analysis Summary:
http://vegbank.org/natureserve/ELEMENT_GLOBAL.2.685614
Confidence Level: Low - Poorly Documented
Confidence Level Comments: No Data Available
Grank: G2
Greasons: No Data Available
| Type | Name | Database Code | Classification Code |
|---|---|---|---|
| Class | 2 Shrub & Herb Vegetation Class | C02 | 2 |
| Subclass | 2.C Shrub & Herb Wetland Subclass | S44 | 2.C |
| Formation | 2.C.5 Salt Marsh Formation | F035 | 2.C.5 |
| Division | 2.C.5.Nd North American Western Interior Brackish Marsh, Playa & Shrubland Division | D036 | 2.C.5.Nd |
| Macrogroup | 2.C.5.Nd.1 Warm & Cool Desert Alkali-Saline Marsh, Playa & Shrubland Macrogroup | M082 | 2.C.5.Nd.1 |
| Group | 2.C.5.Nd.1.a Saltgrass - Lemmon''s Alkali Grass - Saltwort species Alkaline-Saline Marsh & Playa Group | G538 | 2.C.5.Nd.1.a |
| Alliance | A1329 Basin Wildrye - Beardless Wildrye Alkaline Wet Meadow Alliance | A1329 | 2.C.5.Nd.1.a |
| Association | CEGL001572 Beardless Wildrye - Sandberg Bluegrass Wet Meadow | CEGL001572 | 2.C.5.Nd.1.a |
Concept Lineage: No Data Available
Predecessors: No Data Available
Obsolete Names: No Data Available
Obsolete Parents: No Data Available
Synonomy: > Elymus triticoides - Distichlis stricta (Easterday and Mamone 1980)
> Elymus triticoides - Juncus balticus - Triglochin maritima (Easterday and Mamone 1980)
> Elymus triticoides - Juncus balticus (Easterday and Mamone 1980)
> Elymus triticoides - Juncus balticus - Triglochin maritima (Easterday and Mamone 1980)
> Elymus triticoides - Juncus balticus (Easterday and Mamone 1980)
- 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.
- Christy, J. A. 2013. Wet meadow plant associations, Malheur National Wildlife Refuge, Harney County, Oregon. Oregon Biodiversity Information Center, Institute for Natural Resources, Portland State University, Portland.
- Easterday, J. C., and M. S. Mamone. 1980. Vegetation of Warner Valley. Pages 3-66 in: C. Gilman, project director. Analysis of the aquatic habitats of Warner Valley with relation to land use patterns. Final report. National Science Foundation Grant SPI-78-03490. Department of Fisheries and Wildlife, Oregon State University, Corvallis. 175 pp.
- 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.
- Odion, D. C., R. M. Callaway, W. R. Ferren, and F. W. Davis. 1992. Vegetation of Fish Slough, an Owens Valley wetland ecosystem. Pages 171-196 in: C.A. Hall and B. Widawski, editors. The history of water: Eastern Sierra Nevada, Owens Valley, White-Inyo Mountains. White Mountains Research Station Symposium 4. University of California, White Mountain Research Station, Los Angeles, CA.
- 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.
- Western Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Boulder, CO.