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CEGL001095 Crataegus douglasii / Rosa woodsii Wet Shrubland
Type Concept Sentence: No Data Available
Common (Translated Scientific) Name: Black Hawthorn / Woods'' Rose Wet Shrubland
Colloquial Name: No Data Available
Hierarchy Level: Association
Type Concept: This association occurs in the Columbia Basin along low-elevation, low-gradient streams with broad floodplains that are flooded seasonally. Due to the low gradients, however, the floodplains are rarely scoured. The association is composed of a partially closed canopy of the broad-leaved, deciduous tall-shrub Crataegus douglasii, which is typically 3-6 m tall. Occasional individuals of the broad-leaved deciduous trees Populus tremuloides, Populus balsamifera ssp. trichocarpa, Betula occidentalis or Alnus incana may occur, but they never dominate the stand. A broad-leaved, deciduous short-shrub layer is present, with varying amounts of cover. Common species include Rosa woodsii, Salix exigua, and Amelanchier alnifolia. The herbaceous layer is composed of perennial grasses, such as Leymus cinereus, Deschampsia cespitosa, and Elymus glaucus. Some Carex species do occur.
Diagnostic Characteristics: No Data Available
Rationale for Nominal Species or Physiognomic Features: No Data Available
Classification Comments: This association is poorly described in the literature, without data for canopy cover or species composition.
Similar NVC Types: No Data Available
note: No Data Available
Physiognomy and Structure: No Data Available
Floristics: This association is poorly described, without data for canopy cover or detailed species composition. It is composed of a partially closed canopy of the broad-leaved deciduous tall-shrub Crataegus douglasii, which is typically 3-6 m tall. Occasional individuals of the broad-leaved deciduous trees Populus tremuloides, Populus balsamifera ssp. trichocarpa (= Populus trichocarpa), Betula occidentalis, or Alnus incana may occur, but they never dominate the stand. A broad-leaved deciduous short-shrub layer is present, with varying amounts of cover. Common species include Rosa woodsii, Salix exigua, and Amelanchier alnifolia. The herbaceous layer is composed of perennial grasses, such as Leymus cinereus (= Elymus cinereus), Deschampsia cespitosa, and Elymus glaucus. Some Carex species do occur. Many weedy introduced grasses are common in the understories of most Crataegus stands. These can include Phleum pratense, Poa pratensis, Bromus tectorum, Bromus inermis, and Schedonorus arundinaceus (= Festuca arundinacea).
Dynamics: No Data Available
Environmental Description: This association occurs in the Columbia Basin, a downwarped, basalt-floored region. Loess is thick in some portions of the region, and alluvial deposits of variable parent materials are patchy along streams and rivers. Thick mantles of sands from periodically glacially dammed lakes cover some portions of the region. In other areas, valleys and canyons (coulees) have been deeply scoured into the basalt by glacial flooding.
The climate of the region is characterized by a mix of continental and maritime influences. It is in the rainshadow of the Cascades, with annual precipitation between 9 and 20 inches. Between 55% and 75% of the precipitation falls during October through March as snow, and summers are typically dry. Summer temperatures can be hot, and winters are typically cold.
This association is found on riparian sites of low-elevation, low-gradient streams with broad floodplains. These sites are flooded seasonally, but due to the low gradients are rarely scoured. Soils are typically deep and fine-textured.
The climate of the region is characterized by a mix of continental and maritime influences. It is in the rainshadow of the Cascades, with annual precipitation between 9 and 20 inches. Between 55% and 75% of the precipitation falls during October through March as snow, and summers are typically dry. Summer temperatures can be hot, and winters are typically cold.
This association is found on riparian sites of low-elevation, low-gradient streams with broad floodplains. These sites are flooded seasonally, but due to the low gradients are rarely scoured. Soils are typically deep and fine-textured.
Geographic Range: Formerly widespread in eastern Oregon and Washington, primarily in the Columbia Basin and the Blue Mountains of southeastern Washington, northeastern Oregon and west-central Idaho. Now occurs as just a few scattered occurrences in this range.
Nations: US
States/Provinces: ID, OR, WA
Plot Analysis Summary:
http://vegbank.org/natureserve/ELEMENT_GLOBAL.2.685759
Confidence Level: Moderate
Confidence Level Comments: No Data Available
Grank: G2
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 | A3974 Black Hawthorn / Common Snowberry Wet Shrubland Alliance | A3974 | 2.C.4.Nb.5.d |
| Association | CEGL001095 Black Hawthorn / Woods'' Rose Wet Shrubland | CEGL001095 | 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: = Crataegus douglasii - Rosa woodsii Association (Crowe et al. 2004)
= Crataegus douglasii / Rosa woodsii Association (Evans 1989a) [(p.14)]
= Crataegus douglasii / Rosa woodsii community type (Crawford 2003) [7 plots]
= Douglas hawthorn association (Kovalchik 1987) [(p.137)]
= Crataegus douglasii / Rosa woodsii Association (Evans 1989a) [(p.14)]
= Crataegus douglasii / Rosa woodsii community type (Crawford 2003) [7 plots]
= Douglas hawthorn association (Kovalchik 1987) [(p.137)]
- 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.
- 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]
- Evans, S. 1989a. Riparian survey of Washington''s Columbia Basin. Unpublished report prepared for The Nature Conservancy Washington Natural Heritage Program, Olympia, Washington.
- 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).
- 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.
- Kovalchik, B. L. 1987. Riparian zone associations - Deschutes, Ochoco, Fremont, and Winema national forests. Technical Paper 279-87. USDA Forest Service, Pacific Northwest Region, Portland, OR. 171 pp.
- ORNHP [Oregon Natural Heritage Program]. No date. Unpublished data files. Oregon Natural Heritage Program, The Nature Conservancy, Portland, OR.
- 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.