Minnesota Lake Carp Removal Boosts Water Clarity 600%

Minnesota treated Pickerel Lake with fish poison in 2009 to remove invasive common carp, resulting in a nearly 600% increase in water clarity and vegetation cover rising from 4.6% to 90%. The action reduced turbidity caused by carp, allowing other species to repopulate. This case illustrates a successful ecological restoration technique, though it is a historical example rather than a new development.