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Forecasting contributions of lake whitefish year-classes to a Lake Superior commercial fishery from estimates of yearling abundance

North American Journal of Fisheries Management

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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 (r2 = 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.

Geospatial Extents

Additional Publication Details

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
Volume
13
Issue:
2
Year Published:
1993
Language:
English
Publisher:
American Fisheries Society
Publisher location:
Lawrence, KS
Contributing office(s):
Great Lakes Science Center
Description:
p. 349-352
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
North American Journal of Fisheries Management
First page:
349
Last page:
352
Number of Pages:
4
Other Geospatial:
Lake Superior