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CEGL003385 Malus fusca Shrub Swamp

Type Concept Sentence: No Data Available


Common (Translated Scientific) Name: Oregon Crabapple Shrub Swamp

Colloquial Name: No Data Available

Hierarchy Level:  Association

Type Concept: This association is currently only described from Oregon but is also reported to occur in Washington and possibly British Columbia. Additional global information will be added as it becomes available. Habitat is depressions in both deciduous and coniferous forest. Several examples of this association have been observed in the field but only one plot has been sampled. All trees are peripheral to the wetlands. The most typical expression known to the author is a dense, monotypic stand of Malus fusca with a monotypic understory of Carex obnupta. Depending on hydroperiod, the understory ranges from nearly 100% cover of Carex obnupta to very low cover of any other vegetation because of prolonged seasonal ponding. The plot reported here also contains Salix geyeriana and Spiraea douglasii. The association may have been more widespread historically, as large expanses of swamp vegetation once occurred in the northern Willamette and Tualatin valleys. These wetlands have not been sampled adequately.

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 association is found in western Oregon, western Washington, and possibly southwestern British Columbia (Christy 2004).

Nations: CA?,US

States/Provinces:  BC?, OR, WA




Confidence Level: Low

Confidence Level Comments: No Data Available

Grank: G3

Greasons: No Data Available


Concept Lineage: No Data Available

Predecessors: No Data Available

Obsolete Names: No Data Available

Obsolete Parents: No Data Available

Synonomy: = Malus fusca - Maianthemum dilatatum Site Association (MacKenzie and Moran 2004)
= Malus fusca / Carex obnupta Association (Christy 2004)
= Pyrus fusca community type (Kunze 1994) [(p. 92) a type from coastal Washington that intergrades with Picea sitchensis swamp and the Salix hookeriana - Malus fusca / Carex obnupta - Lysichiton americanus association. Both of these are wetter types on organic soil.]

Concept Author(s): J.A. Christy (2004)

Author of Description: J.A. Christy (2004)

Acknowledgements: No Data Available

Version Date: 06-10-06

  • Christy, J. A. 2004. Native freshwater wetland plant associations of northwestern Oregon. Oregon Natural Heritage Information Center, Oregon State University, Portland, OR.
  • 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.
  • Kunze, L. M. 1994. Preliminary classification of native, low elevation, freshwater wetland vegetation in western Washington. Washington State Department of Natural Resources, Natural Heritage Program. 120 pp.
  • MacKenzie, W. H., and J. R. Moran. 2004. Wetlands of British Columbia: A guide to identification. Land Management Handbook No. 52. Research Branch, British Columbia Ministry of Forests and Lands, Victoria, BC. 287 pp.
  • 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.