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CEGL001600 Agrostis pallens Grassland
Type Concept Sentence: No Data Available
Common (Translated Scientific) Name: Seashore Bentgrass Grassland
Colloquial Name: No Data Available
Hierarchy Level: Association
Type Concept: This herbaceous association is currently only described from central and eastern Oregon but is also reported to occur in Washington. Additional global information will be added as it becomes available. Sites sampled were in low- to moderate-gradient, narrow to wide, trough-shaped meadows that are usually in the headwaters of the drainage basin. Streams found in these meadows were 0.5-5 m wide Rosgen F streams with gravel to silt/clay substrates. These streams were probably Rosgen C and/or E streams before they were degraded. The water table is well below the rooting zone by late spring. Agrostis pallens is relatively abundant is tufts that are evenly dispersed across the site. Juncus confusus, Juncus arcticus ssp. littoralis, and Senecio spp. are more abundant on degraded sites. Additional species include Phleum pratense, Deschampsia elongata, Achnatherum occidentale, Epilobium brachycarpum, Taraxacum officinale, Perideridia gairdneri, Potentilla spp., and Achillea millefolium.
Diagnostic Characteristics: No Data Available
Rationale for Nominal Species or Physiognomic Features: No Data Available
Classification Comments: This association is defined as a PNV vegetation type. If it were renamed as a dominance type the species would include Deschampsia cespitosa, Agrostis pallens, and/or Juniperus communis.
Similar NVC Types: No Data Available
note: No Data Available
Physiognomy and Structure: No Data Available
Floristics: No Data Available
Dynamics: This association may be the result of heavy livestock grazing on drier Deschampsia cespitosa meadows (Crowe and Clausnitzer 1997).
Environmental Description: No Data Available
Geographic Range: This grassland association is found in Oregon and Washington.
Nations: US
States/Provinces: OR, WA
Plot Analysis Summary:
http://vegbank.org/natureserve/ELEMENT_GLOBAL.2.688384
Confidence Level: Low - Poorly Documented
Confidence Level Comments: No Data Available
Grank: G1Q
Greasons: No Data Available
| Type | Name | Database Code | Classification Code |
|---|---|---|---|
| Class | 2 Shrub & Herb Vegetation Class | C02 | 2 |
| Subclass | 2.B Temperate & Boreal Grassland & Shrubland Subclass | S18 | 2.B |
| Formation | 2.B.4 Temperate to Polar Scrub & Herb Coastal Vegetation Formation | F005 | 2.B.4 |
| Division | 2.B.4.Nb Pacific North American Coastal Scrub & Herb Vegetation Division | D027 | 2.B.4.Nb |
| Macrogroup | 2.B.4.Nb.2 Pacific Coastal Beach & Dune Macrogroup | M059 | 2.B.4.Nb.2 |
| Group | 2.B.4.Nb.2.b American Dunegrass - Sand Ryegrass - Coastal Sand-verbena Dune Grassland & Beach Group | G498 | 2.B.4.Nb.2.b |
| Alliance | A2066 Seashore Bluegrass - American Dunegrass - Red Fescue Sand Dune Grassland Alliance | A2066 | 2.B.4.Nb.2.b |
| Association | CEGL001600 Seashore Bentgrass Grassland | CEGL001600 | 2.B.4.Nb.2.b |
Concept Lineage: No Data Available
Predecessors: No Data Available
Obsolete Names: No Data Available
Obsolete Parents: No Data Available
Synonomy: = Agrostis diegoensis (Crowe and Clausnitzer 1997) [(p.201)]
= Agrostis pallens Association (Crowe et al. 2004)
= Moist meadow (Hall 1973) [(p.5)]
= Agrostis pallens Association (Crowe et al. 2004)
= Moist meadow (Hall 1973) [(p.5)]
- 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.
- Crowe, E. A., B. L. Kovalchik, and M. J. Kerr. 2004. Riparian and wetland vegetation of central and eastern Oregon. Oregon Natural Heritage Information Center, Institute for Natural Resources, Oregon State University, Portland. 473 pp. [http://oregonstate.edu/ornhic/ publications.html]
- Crowe, E. A., and R. R. Clausnitzer. 1997. Mid-montane wetland plant associations of the Malheur, Umatilla, and Wallowa-Whitman national forests. Technical Paper R6-NR-ECOL-TP-22-97. USDA Forest Service, Pacific Northwest Region, Portland, OR.
- 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.
- Johnson, C. G., and S. A. Simon. 1985. Plant associations of the Wallowa Valley Ranger District, Part II: Steppe. USDA Forest Service, Pacific Northwest Region, Wallowa-Whitman National Forest. 258 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.
- 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.