2016
DOI: 10.1080/02705060.2016.1173120
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Fish community changes in Shoal Lake, Canada, following the overexploitation of a top predator

Abstract: Overexploitation of a single target species often results in fish community changes. Commercial and recreational overexploitation of walleye (Sander vitreus) in Shoal Lake, Ontario, in the early 1980s resulted in a ban on walleye fishing. In this study, we summarize potential changes in the catch-per-unit-effort of large-bodied fishes (abundance and biomass in gill nets) and small-bodied fishes (abundance in shoreline seines) for most years in the period 1979À2001. Through our analysis of gill net data, we fou… Show more

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Cited by 3 publications
(7 citation statements)
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“…This is expected as a result of increased fishing mortality, whose usual effect is to lower equilibrium biomass (Lester et al, ; Post et al, ). Although walleye populations can be collapsed by fishing (Post et al, ; Thao et al, ), fishing mortality that reduces the biomass of adults is acceptable within sustainable harvest limits. In Ontario, the target for harvest is intended to be half the carrying capacity in order to maximize population growth (MNRF, ).…”
Section: Discussionmentioning
confidence: 99%
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“…This is expected as a result of increased fishing mortality, whose usual effect is to lower equilibrium biomass (Lester et al, ; Post et al, ). Although walleye populations can be collapsed by fishing (Post et al, ; Thao et al, ), fishing mortality that reduces the biomass of adults is acceptable within sustainable harvest limits. In Ontario, the target for harvest is intended to be half the carrying capacity in order to maximize population growth (MNRF, ).…”
Section: Discussionmentioning
confidence: 99%
“…They surpass salmonids as one of the most prized recreationally sought fish in North America (Fisheries & Oceans Canada, ; Schramm & Gerard, ) and support commercial fisheries in the Laurentian Great Lakes (Roseman, Kocovsky, & Vandergoot, ). As such, many populations experience high rates of overexploitation (Post et al, ; Thao, Mosindy, & Venturelli, ). Walleye populations are also threatened by invasive species, habitat degradation, and climate change that are altering their habitat and productivity (Nienhuis, Haxton, & Dunkley, ; Robillard & Fox, ; Venturelli, Lester, Marshall, & Shuter, ).…”
Section: Introductionmentioning
confidence: 99%
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