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Yakima River Species Interactions Studies Annual Report: 1990

Description: Studies of species interactions were implemented to address concerns about the possible effects of supplementation (with anadromous species) on resident fish populations in the upper Yakima River basin. The current study objectives include collection of baseline information on the fish populations in the upper Yakima River and associated tributaries. As part of this baseline phase, spawning surveys of the upper Yakima River and thirteen selected tributaries between Roza and Keechelus dams were … more
Date: February 1991
Creator: Hindman, James N.
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Yakima River Species Interactions Studies Annual Report: 1991

Description: The Yakima/Klickitat Fisheries Project (YKFP) proposes to assess the merits of ''supplementation'' as a means to increase natural production and harvest opportunities for anadromous fish in the Yakima and Klickitat subbasins. Supplementation involves rearing and release of artificially produced fish, which upon return as adults, would be managed to form a major component of the naturally spawning population.
Date: October 1992
Creator: McMichael, Geoffrey A.
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Yakima River Species Interactions Studies Annual Report: 1992

Description: The Yakima Species Interactions Study (YSIS) was begun in September of 1989 to investigate species interactions among fish in response to proposed supplementation of salmon and steelhead in the Yakima Basin. Supplementation is defined as ''the use of artificial propagation in the attempt to maintain or increase natural production while maintaining the long term fitness of the target population, and keeping the ecological and genetic impacts on non-target populations within specified biological … more
Date: August 1993
Creator: Pearsons, Todd N.
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