Invasive Species

State agencies are teaming up to prevent an invasive forest pest from making its way into Wisconsin and threatening millions of the state’s hemlock trees.

American shippers are at odds with the Canadian government over its regulations that require all Great Lakes vessels or “lakers” to install systems to treat their ballast water by 2030.

The Wisconsin DNR is proposing to reduce the commercial harvest on whitefish in Lake Michigan as the population has seen a dramatic decline.

The Wisconsin Department of Natural Resources is increasing monitoring in Lake Winnebago for invasive round gobies that can force out native bottom-dwelling fish.

A new report published by UW-Madison researchers in the journal Current Biology uncovers more of the mystery of how the mushrooms have spread — and the potential consequences.

An invasive plant has been spotted in southcentral Wisconsin, and scientists are asking the public for help to prevent it from spreading across the region.

As a critical mass of invasive carp creeps ever closer to Wisconsin’s waterways, youth on the Wisconsin River are helping monitor their spread.

More than 100 waterfront property owners in Wisconsin are backing a petition to require decontamination of wake boats moving between lakes to prevent the spread of invasive species.

State regulators say the commercial harvest of lake whitefish in Lake Michigan has reached its lowest level since 1990, and some fisheries biologists fear the species might largely disappear in parts of the lake.

Two suppliers of aquatic creatures were recently convicted for ignoring warnings from the Wisconsin Department of Natural Resources and selling illegal crayfish species to Wisconsinites, the department announced today.