Boating season is only about 10 weeks away, and with it comes heightened concern about the potential spread of zebra mussels.
Besides attaching themselves to boats, motors and trailers, they can also hitchhike from lake to lake on docks, boat lifts and other equipment that will soon be dunked into water.
To lower that risk, a new state law requires mandatory training for those in the business of dock and boat services.
About 70 company owners and workers met this week in Chanhassen for the first of 21 training sessions to be held statewide.
"We need to get you up to speed to protect our lakes and to protect you," Jay Rendall, invasive species prevention coordinator for the Minnesota Department of Natural Resources, told the group.
Concern is high because invasive mussels litter beaches with razor-sharp shells, accumulate on boats and clog motors, and change the ecology of fisheries by consuming food that small fish need to survive. Lakeshore and resort owners worry that they also will lower property values and discourage tourism.
Beefed-up enforcement
The threat from the dock equipment is very real. Rose Lake in Otter Tail County and Lake Irene in Douglas County were contaminated with zebra mussels last fall when lakeshore owners purchased and installed used boat lifts that came from infested lakes.