Zebra mussels, a native of Europe and Asia, have recently established a reproducing population in lakes Mendota and Monona. These little filter-feeding organisms can negatively impact native lake ecosystems. Although they might increase water clarity by feeding on zooplankton, green algae and other debris, zebra mussels do not eat blue-green algae. This means they can deplete the water of important fish food and natural algae grazers. Zebra mussels may also damage boat hulls and engines and cut the feet of swimmers. Zebra mussels are difficult to eradicate once established in a water body.

Clean Lakes Alliance is working with Wisconsin Department of Natural Resources and UW-Madison Center For Limnology to track zebra mussel population establishment and expansion in the Yahara chain of lakes and could use your help!