Forecasting contributions of lake whitefish year-classes to a Lake Superior commercial fishery from estimates of yearling abundance
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Abstract
We developed a simple linear regression model to forecast year-class contributions of lake whitefish Coregonus clupeaformis to the commercial harvest in the Apostle Islands region of Lake Superior. We indexed year-class strength from catches of yearling fish in bottom trawl samples. Recruitment of each year-class was measured by its relative abundance in the fishery at age 6. The relation between recruitment to the commercial fishery and year-class strength indices was positive and significant (r 2 = 0.67, P < 0.01). The model produced reliable estimates of recruitment to the fishery within the range of the regression. Projected recruitment of the 1983–1987 year-classes to the fishery in 1989-1993 should be sufficient to sustain current levels of harvest through 1993.
Study Area
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Forecasting contributions of lake whitefish year-classes to a Lake Superior commercial fishery from estimates of yearling abundance |
| Series title | North American Journal of Fisheries Management |
| DOI | 10.1577/1548-8675(1993)013<0349:FCOLWY>2.3.CO;2 |
| Volume | 13 |
| Issue | 2 |
| Year Published | 1993 |
| Language | English |
| Publisher | Taylor & Francis |
| Contributing office(s) | Great Lakes Science Center |
| Description | 4 p. |
| First page | 349 |
| Last page | 352 |
| Other Geospatial | Lake Superior |
| Online Only (Y/N) | N |
| Additional Online Files (Y/N) | N |
| Google Analytic Metrics | Metrics page |