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MetaData for Willamette Biological Opinion Hatchery Research 2002-03 Addendum
Willamette Biological Opinion Hatchery Research 2002-03 Addendum
Identification Information
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Citation
- Originator: ODFW
- Publish Date: October 2003
- Online Link: None
- BPA Project #:
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Contact Information
- Agency: Oregon Department of Fish and Wildlife
- Name: Jeremy Romer
- Job Position: Assistant Project Leader
- Telephone: 541-757-4113
- E-Mail Address: jeremy.d.romer@odfw.oregon.gov
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Description
- Abstract: This report is an addendum to the report on activities in 2002 that was generated in
December of that year. This report also presents results of spawning surveys and
stomach content analysis that were completed in 2003. A complete report for the 2003
survey season will be prepared after the seasons trapping and angler surveys have ended.
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- Purpose: The National Marine Fisheries Service (NMFS) has listed Spring Chinook salmon
(Oncorhynchus tshawytscha) and Winter Steelhead (O. mykiss) in the Upper Willamette
River Evolutionarily Significant Unit (ESU) as threatened under the Endangered Species
Act (ESA; 64 FRN 14308; 64 FRN 14517). Concomitant with this listing, any actions taken
or funded by a federal agency must be evaluated to assess whether these actions are
likely to jeopardize the continued existence of threatened and endangered species, or
result in the destruction or impairment of critical habitat. Several fish hatcheries operate
within the ESU and may impact wild populations of listed species. Although all of the
artificial propagation programs that potentially affect listed salmonids in the Upper
Willamette River ESUs are operated by the Oregon Department of Fish and Wildlife
(ODFW), 90% of the funding for these operations comes from the U.S. Army Corps of
Engineers (COE).
Possible risks of artificial propagation programs have been well documented. Hazards
include disease transfer, competition for food and spawning sites, increased predation,
increased incidental mortality from harvest, loss of genetic variability, genetic drift, and
domestication (Steward and Bjornn 1990; Hard et al. 1992; Cuenco et al. 1993; Busack
and Currens 1995; NRC 1996; and Waples 1999). Hatcheries can also play a positive role
for wild salmonids by bolstering populations, especially those on the verge of extirpation,
providing a genetic reserve in the case of extirpation, and providing opportunities for
nutrient enrichment of streams (Steward and Bjornn 1990; Cuenco et al. 1993). The
objective of this project is to evaluate the potential effects hatchery programs have on
naturally spawning populations of spring chinook salmon and winter steelhead within the
Upper Willamette River ESU. The project employs four types of activities to achieve this
goal: sampling of returns to hatcheries, angler surveys to assess fisheries, monitoring of
adult and juvenile migration through the use of traps and video observations, and
monitoring natural production through spawning ground surveys.
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- Time Period of Content:
- Geographic Extent: Molalla, North Santiam, South Santiam, Santiam, Calapooia, McKenzie, South Fork McKenzie, and Middle Fork Willamette Rivers
- Status: Final
- Use Constraints:
- Format: PDF
Data Quality Information
- Lineage-Source: Task Order: NWP-OP-FH-02-01
Work Completed for Compliance With the Biological Opinion for
Hatchery Programs in the Willamette Basin, USACE funding: 2002-03
Data Information
- No data information was supplied.
Entity and Attribute Information
- Attributes Description: Field attribute information is available in the database table field descriptions.
Is a physical copy maintained for reference at Headquarters?
Unknown
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