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Title: Salmon Supplementation Studies in Idaho Rivers; Idaho Supplementation Studies, 1992 Annual Report.

Technical Report ·
DOI:https://doi.org/10.2172/819767· OSTI ID:819767

This is the first annual summary of results for chinook salmon supplementation studies in Idaho Rivers conducted by the Nez Perce Tribe Department of Fisheries Management. The Nez Perce Tribe has coordinated chinook salmon supplementation research activities with the Bonneville Power Administration, Idaho Department of Fish and Game, U. S. Fish and Wildlife Service, National Marine Fisheries Service, U. S. Forest Service, and the Shoshone Bannock Tribe. The project is a cooperative effort involving members of the Idaho Supplementation Technical Advisory Committee (ISTAC). This project has also been extensively coordinated with the Supplementation Technical Work Group (STWG) which identified specific research needs and integrated and coordinated supplementation research activities through development of a five year work plan. In this study we are assessing what strategies, both brood stock and release stage, are best for supplementing natural or depleted spring and summer chinook populations and what effect supplementation has on these populations. This research should identify which of the supplementation strategies employed are beneficial in terms of increasing adult returns and the ability of these returns to sustain themselves. Biological evaluation points will be parr density, survival to Lower Granite Dam, adult return to weirs, redd counts and presmolt and smolt yield from both treatment and control streams. Genetic monitoring of treatment and control populations will also occur. The supplementation research study has the following objectives: (1) Monitor and evaluate the effect of supplementation on presmolt and smolt numbers and spawning escapements of naturally produced salmon. (2) Monitor and evaluate changes in natural productivity and genetic composition of target and adjacent populations following supplementation. (3) Determine which supplementation strategies (brood stock and release stage) provide the quickest and highest response in natural production without adverse effects on productivity. (4) Coordinate supplementation research planning and field evaluation program activities and management recommendations for the Nez Perce Tribe.

Research Organization:
Nez Perce Tribe
Sponsoring Organization:
United States. Bonneville Power Administration.
DOE Contract Number:
00004127
OSTI ID:
819767
Report Number(s):
DOE/BP-00004127-1; R&D Project: 198909802; TRN: US200324%%17
Resource Relation:
Other Information: PBD: 1 Feb 1993
Country of Publication:
United States
Language:
English