In 2009, Minnesota treated Pickerel Lake with fish poison to remove common carp; afterward water clarity rose nearly 600% and plant cover climbed from 4.6% to 90%
For decades, Pickerel Lake in Minnesota struggled with poor water quality, heavy algal growth and extremely low aquatic plant cover. The shallow lake had become dominated by common carp, a bottom-feeding fish that can disturb lake sediments and alter the movement of nutrients through an aquatic ecosystem.But after the invasive fish were removed in 2009,…
