baby walleye (IMAGE) Penn State Caption Slightly higher water temperatures in some upper Midwest lakes have resulted in increased growth rates for young walleyes like these, but if water temperatures continue to rise, influenced by a warming climate, walleye populations in the region ultimately will suffer. Credit Gretchen Hansen, University of Minnesota Usage Restrictions non commercial use only License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.