A recent University of Wisconsin study found that overfishing is hurting the Wisconsin and Minnesota fish population more than climate change.
Most species of fish are impacted primarily by overfishing, though climate change has a detectable impact on the upper midwest region of the United States, co-author of the study and associate professor Olaf Jensen said. “When we compare the magnitude of [climate change and fishing], for most species, fishing is still having a much larger impact than warming,” Jensen said.