Treating lakes for Eurasian watermilfoil with herbicides can harm young fish

Wisconsin Sea Grant’s Gavin Dehnert earned his Ph.D. by studying the effects of commercial 2,4-D herbicide exposure on the development and behavior of freshwater fish at different life stages. Now, he’s taking his research out of the lab and into the natural environment, where 2,4-D is used to treat lakes for the invasive plant, Eurasian watermilfoil.

Outdoor guide online training program offered for free

A new international training program for outdoor guides and outfitters is now available online for northwestern Wisconsin. The program, named Guide and Outfitter Recognized Professional (GORP) is being offered on Nov. 1 by Wisconsin Sea Grant in conjunction with Oregon Sea Grant.

River Talks resume with Barker’s Island tour

The River Talks series returns for the season with “Greener and Cleaner: How a Marina Takes Big Strides Toward Cleaner Water,” an in-person tour of environmental improvements on Barker’s Island in Superior at 5 p.m. Wednesday, Oct. 13.

Methylmercury water concentrations low, but Great Lakes fish consumption advisories persist—new research documents one probable culprit

Methylmercury uptake rate in phytoplankton is among the highest recorded    A recently published study in the journal of the American Chemical Society, Environmental Science and Technology, found that while Great Lakes waters harbor low methylmercury concentrations, the rates of methylmercury transfer to phytoplankton are extremely high, higher than rates observed in open oceans. Phytoplankton Read more about Methylmercury water concentrations low, but Great Lakes fish consumption advisories persist—new research documents one probable culprit[…]

Researchers investigate the impact of water birds on Green Bay

Robert Wolf and Amy Howe with UW-Green Bay are coordinating a small army of students and government agency researchers to count and observe the behavior of birds that eat fish in the lower Green Bay area around Cat Island, an area that Howe likens to the “Serengeti of Lake Michigan” due to the sheer abundance of wildlife.