Print Report

CEGL001142 Alnus incana - Betula occidentalis Wet Shrubland

Type Concept Sentence: No Data Available


Common (Translated Scientific) Name: Gray Alder - Water Birch Wet Shrubland

Colloquial Name: No Data Available

Hierarchy Level:  Association

Type Concept: This alder - birch shrubland association is found in Colorado, Idaho, Oregon and Washington and may also occur in California, Utah, Montana and Wyoming. This description is based on information only from Great Sand Dunes National Park and Preserve in Colorado. Additional global information will be added as it becomes available. This association is documented from a single plot at Great Sand Dunes located on a valley floor at 2588 m elevation. Terrain is generally flat and intermittently flooded. Soils are poorly drained loams. Ground cover is composed of 40% litter and duff, 20% bare soil, 5% rock, and 10% water. This association is characterized by a dense canopy of Betula occidentalis (50%) and Alnus incana (30%). Small amounts of other tall or short shrubs are also present, including Acer glabrum, Salix lucida ssp. caudata, Ribes leptanthum, and Rosa woodsii. Herbaceous cover is graminoid-dominated but includes trace amounts of numerous forb species. Glyceria striata is the dominant graminoid with 30% cover. Other species present in with more than trace amounts include Equisetum arvense, Carex spp., and Pyrola asarifolia.

Diagnostic Characteristics: No Data Available

Rationale for Nominal Species or Physiognomic Features: No Data Available

Classification Comments: No Data Available

Similar NVC Types: No Data Available
note: No Data Available

Physiognomy and Structure: No Data Available

Floristics: No Data Available

Dynamics:  No Data Available

Environmental Description:  No Data Available

Geographic Range: This shrubland association is found in Colorado, Idaho, Oregon and Washington and may also occur in California, Utah, Montana and Wyoming.

Nations: US

States/Provinces:  CA?, CO, ID, MT?, OR, UT?, WA, WY?




Confidence Level: Low - Poorly Documented

Confidence Level Comments: No Data Available

Grank: G2G3

Greasons: No Data Available


Concept Lineage: No Data Available

Predecessors: No Data Available

Obsolete Names: No Data Available

Obsolete Parents: No Data Available

Synonomy: = Alnus incana - Betula occidentalis Association (Crowe et al. 2004)

Concept Author(s): Western Ecology Group

Author of Description: K.E. Sabo

Acknowledgements: No Data Available

Version Date: 05-07-10

  • 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]
  • Hansen, H. P. 1942. Post-Mount Mazama forest succession on the east slope of the central Cascades of Oregon. The American Midland Naturalist 47:523-534.
  • 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).
  • Jones, G., and S. Ogle. 2000. Characterization abstracts for vegetation types on the Bighorn, Medicine Bow, and Shoshone national forests. Prepared for USDA Forest Service, Region 2 by the Wyoming Natural Diversity Database, University of Wyoming.
  • 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.
  • 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. 1989. Preliminary riparian community type classification for Nevada. Draft report prepared for USDA Forest Service, Intermountain Region, Ogden, UT. 134 pp.
  • Miller, T. B. 1976. Ecology of riparian communities dominated by white alder in western Idaho. Unpublished thesis, University of Idaho, Moscow. 154 pp.
  • Salas, D. E., J. Stevens, K. Schulz, M. Artmann, B. Friesen, S. Blauer, E. W. Schweiger, and A. Valdez. 2010b. Vegetation classification and mapping project report: Great Sand Dunes National Park and Preserve. Natural Resource Report NPS/ROMN/NRR--2010/179. National Park Service, Fort Collins, CO.
  • WNDD [Wyoming Natural Diversity Database]. No date. Unpublished data on file. Wyoming Natural Diversity Database, University of Wyoming, Laramie, WY.
  • 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.