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Welcome to the interactive web schedule for the 2019 Midwest Fish & Wildlife Conference! The schedule is subject to change (as of November 7, 2018). Please check back for updates. To return to the main Conference website, go to: www.midwestfw.org.

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Monday, January 28 • 4:00pm - 4:20pm
(SYMPOSIA-01) Use of Multiple Surveys and Stock Assessment Models to Evaluate Effects of Liberalized Walleye Harvest Regulations in Saginaw Bay, Lake Huron and Gauge Progress on Management Objectives

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AUTHORS: David G. Fielder, Michigan Department of Natural Resources

ABSTRACT: Walleye reached recovery targets in Saginaw Bay in 2009 and a management simulation model indicated that recreational fishing mortality could be increased by as much as 50% without exceeding reference points of sustainability. Recreational harvest regulations (daily possession limit and minimum length limits) were liberalized in 2015. Monitoring and evaluation has taken the form of creel survey and a fishery independent fish community netting survey. Besides indicators from those efforts, a stock assessment model is also used to gauge mortality rates and status relevant to sustainability thresholds. While walleye harvest has increased some, recreational effort has not changed greatly and that appears to limit the magnitude of the effect. The multiple survey and modeling approach to harvest regulation monitoring is effective, but costly and requires ongoing commitment to survey work and model updating.

Monday January 28, 2019 4:00pm - 4:20pm
HOPE BALLROOM A