Cover Image

Predation by Resident Fish on Juvenile Salmonids in John Day Reservoir [electronic resource] : Final Report, 1983-1986 Volume 1, Final Report of Research.

Salmonidae - John Day Reservior (Wash. And Or.) - Mortality.

Saved in:

Bibliographic Details
Online Access:	Online Access (via OSTI)
Format:	Government Document Electronic eBook
Language:	English
Published:	Portland, Ore. : Oak Ridge, Tenn. : United States. Bonneville Power Administration ; distributed by the Office of Scientific and Technical Information, U.S. Department of Energy, 1988.
Subjects:	Environmental Impacts. Evaluation. Power Generation. Anadromous Fishes. Bonneville Power Administration. Columbia River. Fish Passage Facilities. Juveniles. Leading Abstract. Mortality. Population Dynamics. Progress Report. Salmon. Trout. Hydroelectric Power. Animals. Aquatic Organisms. Document Types. Electric Power. Energy Sources. Fishes. National Organizations. Power. Renewable Energy Sources. Predator-Prey Interactions. Rivers. Streams. Surface Waters. Abstracts. Us Doe. Us Organizations. Vertebrates. Hydro Energy. Environmental Sciences.

Description
Summary:	Salmonidae - John Day Reservior (Wash. And Or.) - Mortality.
Abstract:	In 1982 the NPPC included in its Fish and Wildlife Program a measure that called for studies ''... to investigate juvenile salmon and steelhead losses to predators while these fish are migrating through Columbia and Snake River reservoirs.'' In the same year the Bonneville Power Administration (BPA) funded ODFW and FWS to conduct collaborative studies to estimate the number of juvenile salmonids lost to predators in John Day Reservoir. Also included as study objectives were: (1) a description of the importance of predation losses relative to mortality at the dam and total reservoir mortality; (2) a description of how predation losses might vary (spatially and temporally); and (3) recommendations of measures to control predation on smolts. We studied four species of predator: northern squawfish, walleye, smallmouth bass, and channel catfish. We selected John Day Reservoir as the study site because the following factors led us to believe if predation was a problem in any reservoir, it would be most obvious there because: (1) the reservoir is an important subyearling chinook rearing area; (2) passage and residualism of juvenile salmonids were considered a problem there; and (3) substantial populations of predators were known to reside in the reservoir. Individual reports were processed separately for the data base.
Item Description:	Published through SciTech Connect. 07/01/1988. "doe/bp-34796-4" "DE89004407" Poe, Thomas P.; Rieman, Bruce E. U.S. Fish and Wildlife Service.
Physical Description:	382 pages : digital, PDF file.