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Lake Sturgeon Research
Lake Sturgeon Research
Research Summary: Lake sturgeon (Acipenser fulvescens) have successfully returned to the waters of Green Bay and Lake Michigan after years of stocking efforts. During Spring, spawning runs of lake sturgeon occur in the Menominee, Oconto, Peshtigo, and Fox Rivers where the fish typically swim up to the first barrier to find suitable spawning habitat; small, well-aerated rock. AEFL students have monitored larval drift events in the Menominee and Oconto Rivers to assess recruitment and to determine what environmental variables are associated with the onset of larval drift.
Northern Pike Research
Northern Pike Research
Research Summary: Northern pike (Esox lucius) is an important component of the nearshore fish community of Green Bay. However, compared to many other species, we know relatively little about their reproductive ecology, population strength, and habitat utilization. During the spring northern pike travel through local streams and ditches to find suitable spawning habitat, which consists of shallow wetlands with drowned vegetation. 70 percent of these wetlands no longer exist due to changes in land-use practices like agriculture and urban development. There has been a concerted effort by Brown County, WIDNR, and the USFWS to restore these wetlands over the last 20 years. Our lab has worked to identify the environmental cues northern pike use to choose spawning wetlands and what conditions are necessary for successful recruitment.
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