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CEGL000668 Populus balsamifera ssp. trichocarpa - Alnus rhombifolia Riparian Forest
Type Concept Sentence: No Data Available
Common (Translated Scientific) Name: Black Cottonwood - White Alder Riparian Forest
Colloquial Name: No Data Available
Hierarchy Level: Association
Type Concept: This is a deciduous broad-leaved forest association found in the lower Quercus garryana zone or shrub-steppe zone in eastern Washington and Oregon. It is a riparian community typically found in narrow canyons with some floodplain development. The tree layer is characterized by an open layer of Populus balsamifera ssp. trichocarpa over a denser layer of Alnus rhombifolia. The tree canopy is mostly closed. The undergrowth is poorly documented and maybe highly variable displaying tall-shrub to herbaceous dominance. This is an existing vegetation type that merges into more strict potential types indicated by Alnus rhombifolia.
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 Populus balsamifera ssp. trichocarpa and Alnus rhombifolia. This plant association was created from Daubenmire (1970) to include all Alnus rhombifolia stands in Washington. Evans (1989a) mentions Populus balsamifera ssp. trichocarpa scattered with Alnus rhombifolia along the Touchet River. It is a floodplain forest with Populus balsamifera ssp. trichocarpa trees over a second canopy of Alnus rhombifolia, and is transitional to Alnus rhombifolia forest without flooding or other stand replacement disturbance.
Similar NVC Types: No Data Available
note: No Data Available
Physiognomy and Structure: No Data Available
Floristics: The tree layer is characterized by an open layer of Populus balsamifera ssp. trichocarpa over a denser layer of Alnus rhombifolia. The tree canopy is mostly closed. The undergrowth is poorly documented and maybe highly variable displaying tall-shrub to herbaceous dominance.
Dynamics: No Data Available
Environmental Description: This is a deciduous broad-leaved forest association found in the lower Quercus garryana zone or shrub-steppe zone in eastern Washington and Oregon. It is a riparian community typically found in narrow canyons with some floodplain development.
Geographic Range: Restricted to northern foothills of Blue Mountains and a few low-elevation drainages in the east Cascades foothills of Washington.
Nations: US
States/Provinces: OR, WA
Plot Analysis Summary:
http://vegbank.org/natureserve/ELEMENT_GLOBAL.2.688062
Confidence Level: Low
Confidence Level Comments: No Data Available
Grank: G1
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.3 Temperate Flooded & Swamp Forest Formation | F026 | 1.B.3 |
| Division | 1.B.3.Ng Vancouverian Flooded & Swamp Forest Division | D193 | 1.B.3.Ng |
| Macrogroup | 1.B.3.Ng.1 Vancouverian Flooded & Swamp Forest Macrogroup | M035 | 1.B.3.Ng.1 |
| Group | 1.B.3.Ng.1.d Sitka Spruce - Black Cottonwood - Oregon Ash Lowland Riparian Forest Group | G851 | 1.B.3.Ng.1.d |
| Alliance | A3743 Oregon Ash - Black Cottonwood - Alder species Riparian Forest Alliance | A3743 | 1.B.3.Ng.1.d |
| Association | CEGL000668 Black Cottonwood - White Alder Riparian Forest | CEGL000668 | 1.B.3.Ng.1.d |
Concept Lineage: No Data Available
Predecessors: No Data Available
Obsolete Names: No Data Available
Obsolete Parents: No Data Available
Synonomy: = Alnus rhombifolia Association (Daubenmire 1970) [(p.60)]
= Alnus rhombifolia Association (Evans 1989a) [(p.13)]
= Populus balsamifera ssp. trichocarpa - Alnus rhombifolia Association (Crowe et al. 2004)
= Alnus rhombifolia Association (Evans 1989a) [(p.13)]
= Populus balsamifera ssp. trichocarpa - Alnus rhombifolia Association (Crowe et al. 2004)
- 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.
- Daubenmire, R. F. 1970. Steppe vegetation of Washington. Washington State University Agricultural Experiment Station Technical Bulletin No. 62. 131 pp.
- Evans, S. 1989a. Riparian survey of Washington''s Columbia Basin. Unpublished report prepared for The Nature Conservancy Washington Natural Heritage Program, Olympia, Washington.
- Holmstead, G. 2001. Vegetation of the Snake River corridor in Hells Canyon-Weiser, Idaho to the Salmon River. Technical Report Appendix E.3.3-1 prepared for FERC License No. 1971, Hells Canyon Complex by Idaho Power Company, Boise, ID. 49 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.
- Titus, J. H., M. Kerr, E. Crowe, and B. Kovalchik. 1998. Riparian zones of eastern Oregon. Oregon Natural Heritage Program, Portland.
- 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.