MONROE, Mich. (AP) - Michigan scientists will conduct a trawl survey to assess fish populations of western Lake Erie.
The Department of Natural Resources says the operation will run Monday through Friday.
Area research manager Todd Wills says survey data will help measure the status of prey fish and abundance of young walleye and yellow perch. It also will support efforts to monitor for invasive species.
A trawl looks like a large, mesh sock. It will be towed on the lake bottom behind the research vessel Channel Cat.
A number of sites will be sampled, from the mouth of the Detroit River to the Turtle Island area along the Michigan-Ohio boundary.
The trawl is towed for five to 10 minutes, then hauled aboard the vessel. The catch is sorted, identified and measured.
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