The Development of Fishery Compartments and Population Rate Coefficients for Use in Reservoir Ecosystem Modeling
The Development of Fishery Compartments and Population Rate Coefficients for Use in Reservoir Ecosystem Modeling

Author: George R. Leidy

Publisher:

Published: 1977

Total Pages: 260

ISBN-13:

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The results of analyses designed to develop model fishery compartments and associated fish population rate coefficients on a regional basis for use in reservoir ecosystem modeling are presented. Emphasis is directed toward development of regional rate coefficients for the United States corresponding to major geographical drainage areas. Fishery data will be incorporated in the reservoir ecosystem model currently being developed by personnel of the Environmental Effects Laboratory, U.S. Army Engineer Waterways Experiment Station. Known physical, chemical, and fishery conditions in 187 Corps of Engineers (CE) impoundments larger than 500 acres are described. Multivariable equations are presented that allow estimation of standing crop and sport fish harvest in CE reservoirs. Data were also reviewed and summarized on the ecological growth and assimilation efficiencies of fish, food consumption rates, respiration rates, temperature tolerances, half-saturation constants for growth, and chemical composition.

Changes in the Fish Population in Lake Francis Case in South Dakota in the First 16 Years of Impoundment
Changes in the Fish Population in Lake Francis Case in South Dakota in the First 16 Years of Impoundment

Author: Charles R. Gasaway

Publisher:

Published: 1970

Total Pages: 36

ISBN-13:

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The total number of adult fish in Lake Frances Case, a main steam Missouri River Reservoir, has declined since impoundment in 1952. Goldeye, channel catfish, and northern redhorse have probably remained the same; emerald shiner, white bass, walleye, and possibly flathead catfish have increased. The sauger population began to decline at about the time walleye numbers increased. Some species formerly present have become rare. Forage species in the reservoir were gizzard shad, emerald shiner, and yellow perch, but these were not present in large enough numbers to provide an abundant forage fish population.