A recent study, published in the journal Limnology and Oceanography Letters, examined 194 lakes in Wisconsin, Minnesota and Michigan’s Upper Peninsula to assess changes in walleye spawning. The takeaway is that climate change is causing lakes to thaw earlier and faster than walleye are adapting. When the walleye spawn, there is less food resource available for the babies and their survival can be low.
Danielle Kaeding of Wisconsin Public Radio has an audio report and a longer on-line news story.