NatureServe Explorer logo.An Online Encyclopedia of Life
Search
Ecological Association Comprehensive Report: Record 1 of 1 selected.
See All Search Results    View Glossary
<< Previous | Next >>

(Populus tremuloides) / Crataegus douglasii / Heracleum maximum Wet Shrubland
Translated Name: (Quaking Aspen) / Black Hawthorn / Common Cow-parsnip Wet Shrubland
Unique Identifier: CEGL001094
Classification Approach: International Vegetation Classification (IVC)
Summary: This shrubland association of the Columbia Basin grows on relatively moist sites on deep soils within flat valleys between 550 and 800 m (1800-2600 feet) elevation. Winters are cool and receive the bulk of the area's 50 cm of annual precipitation. Summers are warm to hot with very little precipitation. The canopy is dominated by Crataegus douglasii between 5-7 m in height. Intermittently the overstory is locally dominated by Populus tremuloides. The understory is dominated by forbs, including Heracleum maximum, Hydrophyllum fendleri, and Urtica dioica. The remainder of the herbaceous layer is relatively depauperate due to the extreme shading of the Heracleum maximum.



Classification

Classification Confidence: Low
Classification Comments: This association is defined as a PNV vegetation type.

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 Valley Bottom Black Hawthorn / Common Snowberry Wet Shrubland

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

Similar Associations
Unique Identifier Name
CEGL001093 Crataegus douglasii - (Crataegus chrysocarpa) Shrubland



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These data are subject to substantial ongoing revision and may be out of date for some states.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
Idaho Populus tremuloides / Crataegus douglasii / Heracleum maximum Woodland Equivalent Certain IDCDC unpubl. data
Oregon Crataegus douglasii / Heracleum maximum Equivalent Certain Kagan et al. 2004


Other Related Concepts
Related Concept Name: (Populus tremuloides) - Crataegus douglasii / Heracelum maximum plant association
Relationship: = - Equivalent
Reference: 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.
Related Concept Name: Crataegus douglasii / Heracleum lanatum - Populus tremuloides Phase
Relationship: F - Finer
Reference: Daubenmire, R. F. 1970. Steppe vegetation of Washington. Washington State University Agricultural Experiment Station Technical Bulletin No. 62. 131 pp.
Related Concept Name: Crataegus douglasii / Heracleum lanatum Association
Relationship: F - Finer
Reference: Daubenmire, R. F. 1970. Steppe vegetation of Washington. Washington State University Agricultural Experiment Station Technical Bulletin No. 62. 131 pp.

Ecological Systems Placement

Ecological Systems Placement
Ecological System Unique ID Ecological System Name
CES304.768 Columbia Basin Foothill Riparian Woodland and Shrubland


NatureServe Conservation Status
Global Status: G1 (14Nov1997)
Rounded Global Status: G1 - Critically Imperiled
Reasons: This association is rare due to habitat loss and degradation. Habitat supporting stands of Crataegus have been replaced by pasture and cropland. Remaining examples of stands are frequently surrounded by agricultural land and threatened by herbicide drift or livestock grazing. The diagnostic understory forb is palatable to livestock. Livestock use tends to open the canopy of stands and allow invasion of exotic species, including Poa pratensis, Cirsium vulgare, Tanacetum vulgare, Arctium minus, Dipsacus fullonum, and Taraxacum sp. Only one small, low-quality example of this occurrence is known to be protected.

Distribution
Color legend for Distribution Map
United States Distribution: ID, OR, WA
Global Distribution: United States
Global Range: This is a minor type in the Columbia Basin within the Palouse grassland zone of southeastern Washington, northeastern Oregon and western Idaho. It is also known from one location in eastern Idaho.

U.S. Forest Service Ecoregions
Domain Name: Dry Domain
Division Name: Temperate Steppe Division
Province Name: Great Plains-Palouse Dry Steppe Province
Province Code: 331 Occurrence Status: Confident or certain
Section Name: Palouse Prairie Section
Section Code: 331A Occurrence Status: Confident or certain
Division Name: Temperate Desert Division
Province Name: Intermountain Semi-Desert Province
Province Code: 342 Occurrence Status: Confident or certain
Section Name: Columbia Basin Section
Section Code: 342I Occurrence Status: Confident or certain
Division Name: Temperate Steppe Regime Mountains
Province Name: Middle Rocky Mountain Steppe - Coniferous Forest - Alpine Meadow Province
Province Code: M332 Occurrence Status: Confident or certain
Section Name: Blue Mountains Section
Section Code: M332G Occurrence Status: Confident or certain


Vegetation

Vegetation Summary: This is a dense thicket of the broad-leaved deciduous shrub Crataegus douglasii of 5-7 m height. The understory is dominated by a lush layer of a combination of the tall (up to 2 m tall) perennial forbs Heracleum maximum (= Heracleum lanatum), Hydrophyllum fendleri, or Urtica dioica. The dense herbaceous layer provides so much shade that few shorter species are able to establish, unless they have a growth peak in the spring before the Heracleum develops. A few locations have a tree layer of Populus tremuloides, but apparently these do not differ in environmental characteristics. This type frequently has a floristic component characteristic of the nearby mountains, such as Circaea alpina, Cornus sericea (= Cornus stolonifera), Elymus glaucus, Geum macrophyllum, Osmorhiza berteroi, and Pteridium aquilinum. It is also very susceptible to degradation by livestock use, which results in an understory of the exotic and/or invasive annual grasses Bromus tectorum and Poa pratensis.

Vegetation Composition (incomplete)
Species Name Rounded Global Status Growth Form Stratum Charact-
eristic
Dominant Constant
Cover Class %
Con-
stancy
%
Crataegus douglasii G1 Broad-leaved deciduous shrub Tall shrub/sapling  
 
 
Prunus virginiana G1 Broad-leaved deciduous shrub Tall shrub/sapling    
 
 
Heracleum maximum G1 Flowering forb Herb (field)  
 
 
Hydrophyllum fendleri G1 Flowering forb Herb (field)    
 
 
Maianthemum stellatum G1 Flowering forb Herb (field)    
 
 
Urtica dioica G1 Flowering forb Herb (field)    
 
 
Bromus tectorum G1 Graminoid Herb (field)      
 
 
Poa pratensis G1 Graminoid Herb (field)      
 
 


Vegetation Structure
Stratum Growth Form
Height of Stratum (m)
Cover
Class
%
Min
Cover %
Max
Cover %
Tall shrub/sapling Broad-leaved deciduous shrub
2 - 5 m
 
10
25
Herb (field) Flowering forb
1 - 2 m
 
0
10


Environmental Setting

Wetland Indicator: Y
Environmental Summary: Elevations range from 550 to 800 m (1800-2600 feet) in the semi-arid steppe region of eastern Washington. This association is typically found on aggraded valley floors (locally called "flats") which border intermittent or permanent streams with dependable soil moisture. These are valleys with accumulated glacial outwash materials of fine silts and clays. It often extends up contiguous north-facing slopes where there is seepage providing constant moisture.


Dynamic Processes


Plot Sampling & Classification Analysis

Plots stored in VegBank


Authors/Contributors
Concept Author(s): M.S. Reid
Element Description Edition Date: 10Jun1993
Element Description Author(s): M.S. Reid, M. Jankovsky-Jones and M. Schindel
NatureServe Conservation Status Factors Edition Date: 27Jan2000
NatureServe Conservation Status Factors Author(s): M. Jankovsky-Jones, mod. M. Schindel

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


References
  • 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.

  • Daubenmire, R. F. 1970. Steppe vegetation of Washington. Washington State University Agricultural Experiment Station Technical Bulletin No. 62. 131 pp.

  • 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.

  • 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.


Use Guidelines and Citation

The Small Print: Trademark, Copyright, Citation Guidelines, Restrictions on Use, and Information Disclaimer.

Note: All species and ecological community data presented in NatureServe Explorer at http://explorer.natureserve.org were updated to be current with NatureServe's central databases as of March 2019.
Note: This report was printed on

Trademark Notice: "NatureServe", NatureServe Explorer, The NatureServe logo, and all other names of NatureServe programs referenced herein are trademarks of NatureServe. Any other product or company names mentioned herein are the trademarks of their respective owners.

Copyright Notice: Copyright © 2019 NatureServe, 2511 Richmond (Jefferson Davis) Highway, Suite 930, Arlington, VA 22202, U.S.A. All Rights Reserved. Each document delivered from this server or web site may contain other proprietary notices and copyright information relating to that document. The following citation should be used in any published materials which reference the web site.

Citation for data on website including State Distribution, Watershed, and Reptile Range maps:
NatureServe. 2019. NatureServe Explorer: An online encyclopedia of life [web application]. Version 7.1. NatureServe, Arlington, Virginia. Available http://explorer.natureserve.org. (Accessed:

Citation for Bird Range Maps of North America:
Ridgely, R.S., T.F. Allnutt, T. Brooks, D.K. McNicol, D.W. Mehlman, B.E. Young, and J.R. Zook. 2003. Digital Distribution Maps of the Birds of the Western Hemisphere, version 1.0. NatureServe, Arlington, Virginia, USA.

Acknowledgement Statement for Bird Range Maps of North America:
"Data provided by NatureServe in collaboration with Robert Ridgely, James Zook, The Nature Conservancy - Migratory Bird Program, Conservation International - CABS, World Wildlife Fund - US, and Environment Canada - WILDSPACE."

Citation for Mammal Range Maps of North America:
Patterson, B.D., G. Ceballos, W. Sechrest, M.F. Tognelli, T. Brooks, L. Luna, P. Ortega, I. Salazar, and B.E. Young. 2003. Digital Distribution Maps of the Mammals of the Western Hemisphere, version 1.0. NatureServe, Arlington, Virginia, USA.

Acknowledgement Statement for Mammal Range Maps of North America:
"Data provided by NatureServe in collaboration with Bruce Patterson, Wes Sechrest, Marcelo Tognelli, Gerardo Ceballos, The Nature Conservancy-Migratory Bird Program, Conservation International-CABS, World Wildlife Fund-US, and Environment Canada-WILDSPACE."

Citation for Amphibian Range Maps of the Western Hemisphere:
IUCN, Conservation International, and NatureServe. 2004. Global Amphibian Assessment. IUCN, Conservation International, and NatureServe, Washington, DC and Arlington, Virginia, USA.

Acknowledgement Statement for Amphibian Range Maps of the Western Hemisphere:
"Data developed as part of the Global Amphibian Assessment and provided by IUCN-World Conservation Union, Conservation International and NatureServe."

NOTE: Full metadata for the Bird Range Maps of North America is available at:
http://www.natureserve.org/library/birdDistributionmapsmetadatav1.pdf.

Full metadata for the Mammal Range Maps of North America is available at:
http://www.natureserve.org/library/mammalsDistributionmetadatav1.pdf.

Restrictions on Use: Permission to use, copy and distribute documents delivered from this server is hereby granted under the following conditions:
  1. The above copyright notice must appear in all copies;
  2. Any use of the documents available from this server must be for informational purposes only and in no instance for commercial purposes;
  3. Some data may be downloaded to files and altered in format for analytical purposes, however the data should still be referenced using the citation above;
  4. No graphics available from this server can be used, copied or distributed separate from the accompanying text. Any rights not expressly granted herein are reserved by NatureServe. Nothing contained herein shall be construed as conferring by implication, estoppel, or otherwise any license or right under any trademark of NatureServe. No trademark owned by NatureServe may be used in advertising or promotion pertaining to the distribution of documents delivered from this server without specific advance permission from NatureServe. Except as expressly provided above, nothing contained herein shall be construed as conferring any license or right under any NatureServe copyright.
Information Warranty Disclaimer: All documents and related graphics provided by this server and any other documents which are referenced by or linked to this server are provided "as is" without warranty as to the currentness, completeness, or accuracy of any specific data. NatureServe hereby disclaims all warranties and conditions with regard to any documents provided by this server or any other documents which are referenced by or linked to this server, including but not limited to all implied warranties and conditions of merchantibility, fitness for a particular purpose, and non-infringement. NatureServe makes no representations about the suitability of the information delivered from this server or any other documents that are referenced to or linked to this server. In no event shall NatureServe be liable for any special, indirect, incidental, consequential damages, or for damages of any kind arising out of or in connection with the use or performance of information contained in any documents provided by this server or in any other documents which are referenced by or linked to this server, under any theory of liability used. NatureServe may update or make changes to the documents provided by this server at any time without notice; however, NatureServe makes no commitment to update the information contained herein. Since the data in the central databases are continually being updated, it is advisable to refresh data retrieved at least once a year after its receipt. The data provided is for planning, assessment, and informational purposes. Site specific projects or activities should be reviewed for potential environmental impacts with appropriate regulatory agencies. If ground-disturbing activities are proposed on a site, the appropriate state natural heritage program(s) or conservation data center can be contacted for a site-specific review of the project area (see Visit Local Programs).

Feedback Request: NatureServe encourages users to let us know of any errors or significant omissions that you find in the data through (see Contact Us). Your comments will be very valuable in improving the overall quality of our databases for the benefit of all users.

Copyright 2019
NatureServe
Version 7.1 (2 February 2009)
Data last updated: March 2019