- Our Work
- Invasive Species
Pelican River Watershed District has long been involved in education, research and management activities relating to aquatic invasive species. We encourage you, whether a resident, angler, watersports enthusiast, student or visitor to be informed and diligent in keeping our lakes clean and preventing the further spread of AIS.
Know the laws:
21 days - When moving equipment from a lake or river, all visible zebra mussels, facet snails and aquatic plants must be removed whether dead or alive. Equipment must be dry for at least 21 days and AIS free before placing in another waterbody.
Pull the Plug - All water draining devices must be removed or set to "open" when on public roads - including live-wells.
Bait Disposal - Dispose of all unwanted bait in the trash, dumping unused bait on land or in the water is not legal.
The Minnesota Department of Natural Resources reported that a new plant, actually an algae, has been found in two connected lakes, Koronis and Mud, near Paynesville. Like Eurasian milfoil, it grows into dense mats that can cover the surface of shallow waters, squeezing out other plants and creating a wall between fish and their spawning grounds.
In 2007 the Minnesota DNR conducted a survey of Detroit Lake to assess the extent of invasive plant spread throughout the lake. The DNR was interested in monitoring flowering rush in Detroit Lake because at the time, only 14 water bodies in the state were recognized as containing flowering rush (MNDNR Ecological Resources 2006).
DNR Ecological Resources invasive species field staff conducted a point-intercept vegetation survey of Detroit Lake in late July, 2007. Submerged aquatic plants were found in 97 % of the sites surveyed from the shore to a depth of 20 feet. A total of 25 native aquatic plant species were recorded. Common native aquatic species included greater bladderwort (Utricularia vulgaris), muskgrass (Chara spp.), northern water milfoil (Myriophyllum sibiricum), and sago pondweed (Stuckenia pectinata).