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CEGL002624 Salix lutea / Rosa woodsii Wet Shrubland

Type Concept Sentence: No Data Available

Common (Translated Scientific) Name: Yellow Willow / Woods'' Rose Wet Shrubland

Colloquial Name: No Data Available

Hierarchy Level:  Association

Type Concept: The association is found in dry regions of southeastern Oregon, southwestern Idaho, and Nevada at elevations ranging from 976 to 2440 m (3200-8000 feet). This association usually occurs in moderate width, V-shaped valleys on terraces and bars with sandy and silty soils that are up to 1 m above the adjacent channel''s average high water line. Stream channels are mostly narrow, classified as Rosgen B2, B3, or B4, with low to moderate gradients (up to 5%). The water table is usually deep during late summer and near the surface at high water in the spring when flooding of terraces sometimes occurs. Mature, sometimes dense, Salix lutea (up to 5 m tall) clearly dominates this association, and the understory is usually dry and open. Rosa woodsii is prominent in the understory; both it and/or Ribes spp. (especially Ribes aureum, but also Ribes inerme) usually have greater than 20% cover. Herbaceous cover is variable and no species has consistently high cover; more than half of the ground is unvegetated and covered with a layer of leaf litter. Poa pratensis is the most common understory species. On periodically flooded stream bars, this association might be naturally disturbance-induced. Within Salix lutea stands, heavy livestock grazing can promote Rosa woodsii and Ribes aureum.

Diagnostic Characteristics: No Data Available

Rationale for Nominal Species or Physiognomic Features: No Data Available

Classification Comments: Manning and Padgett (1995) included Salix boothii in their "Salix lutea group" because of identification difficulties with non-glaucous forms of Salix lutea, and its dominance in some of the stands they used to describe this type. The high cover of Rosa woodsii and/or Ribes aureum distinguishes this association from other Salix lutea-dominated associations (Manning and Padgett 1995). It is also somewhat similar to the Salix exigua / Rosa woodsii and Salix amygdaloides / Rosa woodsii associations known from upper Brownlee Reservoir on the Snake River in Idaho and Oregon (Holmstead 2001), which have not been incorporated into the USNVC. This association has been quantitatively described from 6 plots in Oregon (Evenden 1990) and 18 plots from Nevada, although some of these plots are dominated or codominated by Salix boothii (Manning and Padgett 1995). Classification has been supplemented by observations from southeastern Oregon (Dean 1960) and 3 plots from southern Idaho (Jankovsky-Jones et al. 2001).

Similar NVC Types: No Data Available
note: No Data Available
Physiognomy and Structure: No Data Available

Floristics: No Data Available

Dynamics:  Manning and Padgett (1995) conclude that this association is disturbance-induced in Nevada, where Salix lutea establishes on periodically flooded stream bars that have shallow water tables. As the floodplain continues its development and the stream becomes incised, the understory shifts to xeric species and, if there is heavy livestock grazing, these species are eventually replaced by Rosa woodsii and Ribes aureum. The high cover of Rosa woodsii may not indicate past heavy grazing in all cases; one known occurrence in Idaho is in a rugged canyon that has limited livestock use (Jankovsky-Jones et al. 2001). The sparse herbaceous understory provides little forage for livestock. Thickets of Rosa woodsii tend to preclude livestock access to the interior of stands, although livestock can create access lanes through the stands.
Environmental Description:  No Data Available
Geographic Range: This association is known from southeastern Oregon, southwestern Idaho and northern Nevada, and possible in adjacent mountains in eastern California.

Nations: US

States/Provinces:  CA?, ID, MT, NV, OR


Confidence Level: Low - Poorly Documented

Confidence Level Comments: No Data Available
Grank: G3

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.4 Temperate to Polar Freshwater Marsh, Wet Meadow & Shrubland Formation F013 2.C.4
Division 2.C.4.Nb Western North American Temperate Freshwater Marsh, Wet Meadow & Shrubland Division D031 2.C.4.Nb
Macrogroup 2.C.4.Nb.5 Sitka Alder - Booth''s Willow / Northwest Territory Sedge Montane Marsh, Wet Meadow & Shrubland Macrogroup M893 2.C.4.Nb.5
Group 2.C.4.Nb.5.d Willow species - Alder species - Water Birch Riparian & Seep Shrubland Group G527 2.C.4.Nb.5.d
Alliance A3769 Booth''s Willow - Geyer''s Willow - Yellow Willow Montane Wet Shrubland Alliance A3769 2.C.4.Nb.5.d
Association CEGL002624 Yellow Willow / Woods'' Rose Wet Shrubland CEGL002624 2.C.4.Nb.5.d
Concept Lineage: No Data Available

Predecessors: No Data Available

Obsolete Names: No Data Available

Obsolete Parents: No Data Available
Synonomy: ? Salix lutea / Rosa woodsii (Sawyer et al. 2009) [61.210.04]
= Salix lutea / Rosa woodsii Community Type (Manning and Padgett 1995)
Concept Author(s): C. Murphy

Author of Description: C. Murphy

Acknowledgements: No Data Available

Version Date: 10-22-02
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  • Dean, M. L. 1960. A taxonomic and ecologic study of the vascular plants of a section of the Owyhee River Canyon in Oregon. M.S. thesis, Oregon State University, Corvallis.
  • Evenden, A. G. 1990. Ecology and distribution of riparian vegetation in the Trout Creek Mountains of southeastern Oregon. Ph.D. dissertation, Oregon State University, Corvallis. 156 pp.
  • 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.
  • IDCDC [Idaho Conservation Data Center]. 2002. Unpublished riparian and wetland association occurrence and plot data on file at the Idaho Conservation Data Center, Idaho Department of Fish and Game, Boise, ID.
  • IDCDC [Idaho Conservation Data Center]. 2005. Wetland and riparian plant associations in Idaho. Idaho Conservation Data Center, Idaho Department of Fish and Game, Boise. [http://fishandgame.idaho.gov/tech/CDC/ecology/wetland_riparian_assoc.cfm] (accessed 14 June 2005).
  • Jankovsky-Jones, M., C. J. Murphy, and C. L. Coulter. 2001. Riparian and wetland plant associations of southwestern Idaho in the Lower Snake River District, Bureau of Land Management. Idaho Conservation Data Center, Idaho Department of Fish and Game, Boise.
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  • MTNHP [Montana Natural Heritage Program]. 2002b. List of ecological communities for Montana. Montana Natural Heritage Program, Montana State Library, Helena, MT.
  • Manning, M. E., and W. G. Padgett. 1992. Riparian community type classification for the Humboldt and Toiyabe national forests, Nevada and eastern California. USDA Forest Service, Intermountain Region Ecology and Classification Program. 274 pp.
  • 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.
  • Padgett, W. G. 1982. Ecology of riparian plant communities in southern Malheur National Forest. Unpublished thesis, Oregon State University, Corvallis. 143 pp.
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