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Curly-leaf Pondweed in the Great Lakes Region Overview | General Resources | Related Resources Current invaders:
Crustaceans: Rusty Crayfish | Spiny Water FleaFish: Goby (Round) | Goby (Tubenose) | Rudd | Ruffe | Sea Lamprey | White Perch Mollusks: Quagga Mussel | Zebra Mussel Plants: Curly-leaf Pondweed | Eurasian Watermilfoil | Phragmites (non-native) | Purple Loosestrife Viruses: Viral Hemorrhagic Septicemia Virus (VHSv) Potential invaders:
Fish: Asian Carp [Invasive species home page] 
What's New Invasive plants, fish threaten Great Lakes region USA Today (7/9) The first aquatic invasive species in the Great Lakes was the sea lamprey in the 1830s. Now more than 180 species are in the region, and 10 more are "knocking on the door," says a senior policy director for The Nature Conservancy. Outdoors: Invasive flora needs to be rooted out from Michigan, too, not just fauna Detroit Free Press (11/29) While high-leaping Asian carp and water-clearing zebra mussels get the headlines, most invasive species aren't animals but are plants. UW researchers say public more aware of invasive species effects The Badger Herald (3/1) Boaters and anglers around Wisconsin are more aware of the potentially detrimental effects of invasive species spreading between Wisconsin waterways and are actively taking preventative measures to stop their spread, a new survey said. Fight against invasives remains fluid Green Bay Press-Gazette (6/22) June is Invasive Species Awareness Month in Wisconsin, and while aquatic invasives previously were limited to plants and animals, VHS has forced the state to talk about invasives as plants, animals and viruses. Kawkawlin River treated for weeds, now clogged with lilies The Bay City Times (9/9) Water lilies have taken the place of aquatic weeds that were clogging the Kawkawlin River in Bay County, Michigan. Curly-leaf pondweed turning lakes green Duluth News Tribune (7/13) More than 500 Minnesota lakes are choked with the invasive curly-leaf pondweed, which can be transported when fishermen don't clean off their boats before heading to a new lake.
Overview Curly-leaf pondweed (Potamogeton crispus) is an exotic plant that forms surface mats that interfere with aquatic recreation. The plant usually drops to the lake bottom by early July. Curly-leaf pondweed was the most severe nuisance aquatic plant in the Midwest until Eurasian watermilfoil appeared. It was accidentally introduced along with the common carp. It has been here so long, most people are not aware it is an exotic. References: A Field Guide to Aquatic Exotic Plants and Animals, University of Minnesota Sea Grant Program
General Resources Habitattitude U.S. Fish and Wildlife Service Adopt a conservation mentality: Protect our environment by not releasing unwanted fish and aquatic plants into the wild. Find out what you can do to help this growing problem on this site. Invasive Plant Council of New York State This group provides coordination and guidance on the management of invasive plants to protect biodiversity in New York State. Includes a list of the state's top 20 most invasive species, along with photos, and information on biology, range and habitat. Restoring Spawning Areas of Muskellunge and Northern Pike Illinois Natural History Survey This article reports on a study, the object of which was to find the best substrate(s) for northern pike and muskellunge eggs. Curly Pondweed was one of the substrates studied. INHS Reports March-April 1995.
Related Resources GLIN: Agencies and Organizations, Flora GLIN: Fish and Fisheries in the Great Lakes Region GLIN: Plants of the Great Lakes Region
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