Abstract
Abstract Since 1884, when commercial fishing first started on Lake of the Woods, the commercial catch and the fish populations have changed markedly. Lake sturgeon (Acipenser fulvescens) which was originally the most important commercial fish is now almost extinct. The lake whitefish (Coregonus clupeaformis) has also shown a striking decline. Intensive commercial fishing was an important factor in the decline of these species. The practical disappearance of other species which were not subject to heavy fishing, the longnose sucker (Catostomus catostomus), goldeye (Amphiodon alosoides), and quillback (Carpiodes cyprinus), however, suggest some basic change in habitat. Destruction of the spawning beds in the Rainy River by pulp-mill wastes was probably the most important of these habitat changes. A correlation was found between the strength of year classes of saugers (Stizostedion canadense) and June rainfall. Recent declines in the population of yellow pikeperch (Stizostedion vitreum) do not appear to be c...
Published Version
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