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CEGL000676 Populus balsamifera ssp. trichocarpa / Salix exigua Riparian Forest
Type Concept Sentence: No Data Available
Common (Translated Scientific) Name: Black Cottonwood / Narrowleaf Willow Riparian Forest
Colloquial Name: No Data Available
Hierarchy Level: Association
Type Concept: This association occurs on alluvial deposits along rivers and perennial streams of the Intermountain West in habitats which are seasonally flooded and saturated. It generally occurs in wider river valleys or terraces, with Populus balsamifera ssp. trichocarpa dominating forest or woodland patches while Salix exigua dominates a continuous shrub canopy, <7 m in height. Few examples of this type occur in pristine condition, so most commonly Poa pratensis, Bromus tectorum, and Verbascum thapsus are widespread in this community. In a few remnants, the open understory can have Artemisia ludoviciana and Leymus cinereus along with some native forbs.
Diagnostic Characteristics: No Data Available
Rationale for Nominal Species or Physiognomic Features: No Data Available
Classification Comments: Sawyer and Keeler-Wolf (1995) define the "narrowleaf willow series" which may have Salix exigua (= Salix hindsiana) or Salix sessilifolia as a dominant. The classification of this type is limited by the highly degraded nature of most intermountain streams. Both species dominants are fairly wide ranging, but they occur together only in low-gradient, low-elevation streams and rivers.
Similar NVC Types: No Data Available
note: No Data Available
Physiognomy and Structure: No Data Available
Floristics: Populus balsamifera ssp. trichocarpa dominates forest or woodland patches while Salix exigua dominates a continuous shrub canopy, <7 m in height. Few examples of this type occur in pristine condition, so most commonly Poa pratensis, Bromus tectorum, and Verbascum thapsus are widespread in this community. In a few remnants, the open understory can have Artemisia ludoviciana and Leymus cinereus along with some native forbs.
Dynamics: No Data Available
Environmental Description: This association occurs on alluvial deposits along rivers and perennial streams in habitats which are seasonally flooded and saturated. It generally occurs in wider river valleys or terraces.
Geographic Range: Found at low elevations on large streams and rivers in the Intermountain West.
Nations: US
States/Provinces: CA?, ID?, NV?, OR, WA
Plot Analysis Summary:
http://vegbank.org/natureserve/ELEMENT_GLOBAL.2.686980
Confidence Level: Low - Poorly Documented
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.Nc Rocky Mountain-Great Basin Montane Flooded & Swamp Forest Division | D195 | 1.B.3.Nc |
| Macrogroup | 1.B.3.Nc.1 Engelmann Spruce - Narrowleaf Cottonwood / Red-osier Dogwood Riparian & Swamp Forest Macrogroup | M034 | 1.B.3.Nc.1 |
| Group | 1.B.3.Nc.1.c Northern Rocky Mountain Lowland-Foothill Riparian Forest Group | G796 | 1.B.3.Nc.1.c |
| Alliance | A0311 Black Cottonwood Northern Rocky Mountain Riparian Forest Alliance | A0311 | 1.B.3.Nc.1.c |
| Association | CEGL000676 Black Cottonwood / Narrowleaf Willow Riparian Forest | CEGL000676 | 1.B.3.Nc.1.c |
Concept Lineage: No Data Available
Predecessors: No Data Available
Obsolete Names: No Data Available
Obsolete Parents: No Data Available
Synonomy: = Populus balsamifera ssp. trichocarpa / Salix exigua Temporarily Flooded Forest (Crawford 2003)
? narrowleaf willow series (Sawyer and Keeler-Wolf 1995)
? narrowleaf willow series (Sawyer and Keeler-Wolf 1995)
- 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.
- Crawford, R. C. 2003. Riparian vegetation classification of the Columbia Basin, Washington. Natural Heritage Report 2003-03. Washington Natural Heritage Program, Washington Department of Natural Resources, Olympia. 98 pp. plus appendices.
- Erixson, J. A., D. Cogan, and J. Von Loh. 2011a. Vegetation inventory project: John Day Fossil Beds National Monument. Natural Resource Technical Report NPS/UCBN/NRTR--2011/419. National Park Service, Fort Collins, CO. 184 pp. [http://www.usgs.gov/core_science_systems/csas/vip/parks/joda.html]
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- Manning, M. E., and W. G. Padgett. 1995. Riparian community type classification for Humboldt and Toiyabe national forests, Nevada and eastern California. USDA Forest Service, Intermountain Region. 306 pp.
- 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.
- Poulton, C. E. 1955. Ecology of the non-forested vegetation in Umatilla and Morrow counties, Oregon. Unpublished dissertation. State College of Washington, Pullman. 166 pp.
- Sawyer, J. O., and T. Keeler-Wolf. 1995. A manual of California vegetation. California Native Plant Society, Sacramento. 471 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.