(1975) Annual Performance Report, Cold Springs and Spirit Lake Research Stations, 1975. Natural Resources, Department of
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iowa conserv_comm_fisheries_section_study_101-3_1975_OCR_.pdf File Size:30MB |
Abstract
Walleye and yellow perch are important sport fish species in Spirit Lake ranking third and second in harvest surveys. Maintenance of a productive walleye and yellow perch fishery, which has intense angler pressure, is dependent upon continual development and eventual recruitment of year classes into the fishery. In turn, year class abundance is dependent upon the extent and magnitude of natural production and/or supplemental stockings of larval and juvenile fishes, and survival through critical life stages. Previous walleye studies at Spirit Lake have for the most part concentrated on adult populations. Population estimates were made in 1947, 1954, 1961-63 and 1967-72.
| Item Type: | Departmental Report |
|---|---|
| Keywords: | cold springs, spirit lake, walleye, yellow perch, fisheries, fish |
| Subjects: | Agriculture and food production > Fisheries Natural resources and environment > Water resources > Rivers and streams Natural resources and environment |
| ID Code: | 48569 |
| Deposited By: | Margaret Barr |
| Deposited On: | 16 Apr 2024 14:44 |
| Last Modified: | 16 Apr 2024 14:44 |
| URI: | https://publications.iowa.gov/id/eprint/48569 |