MetaData for 2004 Oregon Chub Investigations, Progress Reports 2004
2004 Oregon Chub Investigations, Progress Reports 2004
Identification Information
-
Citation
- Originator: Sheerer, Paul D. Peggy S. Kavanagh and Steven E. Jacobs
- Publish Date: 2004
- Online Link: None
- BPA Project #:
-
Contact Information
- Agency: Oregon Department of Fish and Wildlife
- Name: Cedric Cooney
- Job Position: Natural Resources Data and Systems Manager
- Telephone: 503-947-6094
- E-Mail Address: Cedric.X.Cooney@odfw.oregon.gov
-
Description
- Abstract: Oregon chub are endemic to the Willamette River drainage of western Oregon (Markle et
al. 1991). This species was formerly distributed throughout the Willamette River Valley (Snyder
1908) in off-channel habitats such as beaver ponds, oxbows, stable backwater sloughs, and
flooded marshes. These habitats usually have little or no water flow, have silty and organic
substrate, and have an abundance of aquatic vegetation and cover for hiding and spawning. In
the last 100 years, off-channel habitats have disappeared because of changes in seasonal flows
resulting from the construction of dams throughout the basin, channelization of the Willamette
River and its tributaries, and agricultural practices. This loss of habitat combined with the
introduction of non-native species to the Willamette Valley resulted in a sharp decline in Oregon
chub abundance.
The reduction of habitat and the restricted distribution of the Oregon chub resulted in a
determination of "endangered" status under the federal endangered species act (Markle and
Pearsons 1990; Rhew 1993). To evaluate Oregon chub population abundance and distribution,
the Oregon Department of Fish and Wildlife conducted surveys in April-October 2004. We
conducted similar surveys in 1991-2003 (Scheerer et. al. 1992; 1993; 1994; 1995; 1996; 1998;
1999; 2000; 2001; 2002; 2003; 2004; Scheerer and Jones 1997). The survey objectives were to
collect information on the status, distribution, and abundance of Oregon chub, the presence of
non-native and native species, the characteristics of Oregon chub habitats, the characteristics of
potential introduction sites, and to evaluate the success of Oregon chub introductions. In
addition, we reviewed and evaluated projects and activities with the potential to impact Oregon
chub and their habitats and provided summaries to the U.S. Fish and Wildlife Service.
-
- Purpose:
-
- Time Period of Content: 1 January 2004 - 31 December 2004
- Geographic Extent: Willamette Basin
- Status: Final
- Use Constraints:
- Format: PDF File
Data Quality Information
- Lineage-Source:
Data Information
- No data information was supplied.
Entity and Attribute Information
- Attributes Description: Not yet described
Is a physical copy maintained for reference at Headquarters?
No
Files
File Name |
File Type Category |
File Uploaded |
File Description |
|
OregonChub2004.pdf
|
Document File |
11/7/2018 11:13:19 AM |
|
|
|
|