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Salix lasiolepis / Rosa woodsii / Mixed Herbs Wet Shrubland
Translated Name: Arroyo Willow / Woods' Rose / Mixed Herbs Wet Shrubland
Unique Identifier: CEGL001217
Classification Approach: International Vegetation Classification (IVC)
Summary: This riparian willow shrubland association is reported in north-central Nevada and the Mojave Desert of California. It is also reported from the Blue Mountains, northern Basin and Range, Columbia Basin, and eastern slope of the Cascade Range in Oregon. Sites are on gentle slopes at around 1692 m (5550 feet) elevation with western aspects. The vegetation is characterized by a Salix lasiolepis-dominated, dense tall-shrub canopy with a short-shrub layer (1-2 m tall) codominated by Rosa woodsii and Artemisia tridentata. Other common shrubs include Cornus sericea and Ericameria nauseosa. Clematis ligusticifolia, a vine, is often present. The herbaceous layer is composed of mixed forbs and graminoids such as Hordeum brachyantherum, Leymus cinereus, Phlox longifolia, Polygonum argyrocoleon, and Ranunculus cymbalaria. However, most sampled stands are dominated by the introduced annual grass Bromus tectorum and introduced perennial herb Cirsium vulgare.



Classification

Classification Confidence: Low - Poorly Documented

Vegetation Hierarchy
Class 2 - Shrub & Herb Vegetation
Subclass 2.C - Shrub & Herb Wetland
Formation 2.C.4 - Temperate to Polar Freshwater Marsh, Wet Meadow & Shrubland
Division 2.C.4.Nb - Western North American Temperate & Boreal Freshwater Marsh, Wet Meadow & Shrubland
Macrogroup Western North American Montane Marsh, Wet Meadow & Shrubland
Group Western Montane-Subalpine Riparian & Seep Shrubland
Alliance Arroyo Willow Wet Shrubland

This is the revised vegetation hierarchy. For more information see Classification Sources and usnvc.org.



Related Concepts from Other Classifications

Related Subnational Community Units
These data are subject to substantial ongoing revision and may be out of date for some states.
In the U.S., contact the state Heritage Program for the most complete and up-to-date information at: http://www.natureserve.org/natureserve-network.
Information from programs in other jurisdictions will be posted when they are made available.
Subnation Concept Name Relationship to Standard Confidence Reference
Oregon Salix lasiolepis - Rosa woodsii Equivalent Certain Kagan et al. 2004


Other Related Concepts
Related Concept Name: Salix lasiolepis - Rosa woodsii - Cornus sericea ssp. sericea Association
Relationship: = - Equivalent
Reference: 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]
Related Concept Name: Salix lasiolepis / Rosa woodsii / Mixed Herbs Association
Relationship: = - Equivalent
Reference: Evens, J. M., K. Sikes, D. Hastings, and J. Ratchford. 2014. Vegetation alliance descriptions for Lake Mead National Recreation Area, Death Valley National Park and Mojave National Preserve. Unpublished report submitted to USDI National Park Service, Mojave Desert Network Inventory and Monitoring Program. California Native Plant Society, Sacramento, CA.

Ecological Systems Placement

Ecological Systems Placement
Ecological System Unique ID Ecological System Name
CES304.045 Great Basin Foothill and Lower Montane Riparian Woodland and Shrubland
CES306.821 Rocky Mountain Lower Montane-Foothill Riparian Woodland and Shrubland


NatureServe Conservation Status
Global Status: G3Q (23Feb1994)
Rounded Global Status: G3 - Vulnerable

Distribution
Color legend for Distribution Map
United States Distribution: CA, NV, OR
Global Distribution: United States
Global Range: This riparian willow shrubland association occurs on Mill Creek south of Battle Mountain in north-central Nevada and at Death Valley National Park in California. It is also reported from the Blue Mountains, northern Basin and Range, Columbia Basin, and eastern slope of the Cascade Range in Oregon (Kagan et al. 2004).

U.S. Forest Service Ecoregions
Domain Name: Dry Domain
Division Name: Tropical/Subtropical Desert Division
Province Name: American Semi-Desert and Desert Province
Province Code: 322 Occurrence Status: Confident or certain
Section Name: Mojave Desert Section
Section Code: 322A Occurrence Status: Confident or certain
Division Name: Temperate Desert Division
Province Name: Intermountain Semi-Desert and Desert Province
Province Code: 341 Occurrence Status: Confident or certain
Section Name: Lahontan Basin Section
Section Code: 341E Occurrence Status: Confident or certain


Vegetation

Vegetation Summary: The vegetation is characterized by a Salix lasiolepis-dominated, dense tall-shrub canopy with a short-shrub layer (1-2 m tall) codominated by Rosa woodsii and Artemisia tridentata. Other common shrubs include Cornus sericea (= Cornus stolonifera) and Ericameria nauseosa. Clematis ligusticifolia, a vine, is often present. The herbaceous layer is composed of mixed forbs and graminoids such as Hordeum brachyantherum, Leymus cinereus, Phlox longifolia, Polygonum argyrocoleon, and Ranunculus cymbalaria. However, most sampled stands are dominated by the introduced annual grass Bromus tectorum and introduced perennial herb Cirsium vulgare.

Vegetation Composition (incomplete)
Species Name Rounded Global Status Growth Form Stratum Charact-
eristic
Dominant Constant
Cover Class %
Con-
stancy
%
Salix lasiolepis G3 Broad-leaved deciduous shrub Tall shrub/sapling  
 
 
Rosa woodsii G3 Dwarf-shrub Short shrub/sapling  
 
 
Artemisia tridentata G3 Broad-leaved evergreen shrub Short shrub/sapling    
 
 
Cirsium vulgare G3 Flowering forb Herb (field)    
 
 
Bromus tectorum G3 Graminoid Herb (field)    
 
 


Environmental Setting

Wetland Indicator: Y
Environmental Summary: Sites are on gentle slopes at around 1692 m (5550 feet) elevation with western aspects.


Dynamic Processes


Plot Sampling & Classification Analysis

Plots stored in VegBank


Authors/Contributors
Concept Author(s): Western Ecology Group
Element Description Edition Date: 06Jan2017
Element Description Author(s): K.A. Schulz

Ecological data developed by NatureServe and its network of natural heritage programs (see Local Programs) and other contributors and cooperators (see Sources).


References
  • Blackburn, W. H., P. T. Tueller, and R. E. Eckert, Jr. 1968a. Vegetation and soils of the Mill Creek watershed. Nevada Agricultural Experiment Station Bulletin R-43. University of Nevada, Reno. 69 pp.

  • 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]

  • Evens, J. M., K. Sikes, D. Hastings, and J. Ratchford. 2014. Vegetation alliance descriptions for Lake Mead National Recreation Area, Death Valley National Park and Mojave National Preserve. Unpublished report submitted to USDI National Park Service, Mojave Desert Network Inventory and Monitoring Program. California Native Plant Society, Sacramento, CA.

  • 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.

  • 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.

  • Titus, J. H., M. Kerr, E. Crowe, and B. Kovalchik. 1998. Riparian zones of eastern Oregon. Oregon Natural Heritage Program, Portland.

  • Western Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Boulder, CO.


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