Carp removal leads to strikingly clear Wis. lake
Madison, Wis. (AP) – Experts who study waterways say one Madison
lake is cleaner than it’s been in many years.
Scientists at the University of Wisconsin-Madison say Lake
Wingra is so clear because more than half its carp have been
Scientist Dick Lathrop says carp love the muck, so they’re
constantly churning up silt that affects water clarity. He says
with fewer fish, the native plants are doing better and algae
outbursts have been minimal.
Engineers aren’t surprised at the results. They created an
experimental enclosure two years ago that kept carp out of one part
of the lake. The water there became strikingly clear.
Officials followed up by trapping and removing nearly 7,000 carp
in two years.
Lathrop hopes the experience helps scientists achieve similar
results at larger lakes.