MetaData for 2017 Bull Trout Redd Monitoring in the Wallowa Mountains
2017 Bull Trout Redd Monitoring in the Wallowa Mountains
Identification Information
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Citation
- Originator: Sausen, Gretchen
- Publish Date: February 2018
- Online Link:
https://www.fws.gov/oregonfwo/FieldOffices/LaGrande/BullTroutMonitoring/default.asp
- BPA Project #:
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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
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Description
- Abstract: Bull trout were listed as threatened under the Endangered Species Act in 1998 due to declining
populations. The U. S. Fish and Wildlife Service (Service) recommends monitoring bull trout in
subbasins where little is known about the populations, including the Grande Ronde and Imnaha
subbasins. Spawning survey data is important for determining relative abundance and
distribution trends in bull trout populations. This report summarizes the 2017 bull trout spawning
data collected in the Wallowa Mountains of northeast Oregon and compares this with past years’
data. Bull trout spawning surveys have been conducted on similar index areas for selected
Grande Ronde and Imnaha River streams from 1999 to 2017. These surveyed streams are located
within the Wallowa River/Minam River and Imnaha River bull trout core areas. Surveys in 2017
were conducted by the Nez Perce Tribe (NPT), the Oregon Department of Fish and Wildlife
(ODFW), the Service, U.S. Forest Service (USFS), Freshwater Trust, and fisheries consultants.
Objectives of the survey included: (1) locate bull trout spawning areas; (2) determine redd
characteristics; (3) determine bull trout timing of spawning; (4) collect spawning density data;
(5) determine and compare the spatial distribution of redds along the Lostine River in 2006
through 2017; and (6) over time use all of the data to assess local bull trout population trends and
the long-term recovery of bull trout. Timing of spawning, total redds, redd sizes, and redd
locations are documented in the report.
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- Purpose: Data from spawning surveys is necessary to help assess population trends and the long-term recovery of bull trout.
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- Time Period of Content: 1999-2017
- Geographic Extent: Grande Ronde and Imnaha Subbasins, Oregon
- Status: Final
- Use Constraints:
- Format: pdf
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
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