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Eurasian
Watermilfoil (Myriophyllum spicatum) |
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For information on what CFISEM Project is doing with Eurasian Watermilfoil click here. |
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Eurasian Watermilfoil is a
feathery, submersed aquatic plant native to northern Europe and Asia.
It was introduced into North America between the late 1800’s and 1940.
There are many other native milfoils in the Great Lakes region, such as
northern watermilfoil (Myriophyllum
sibircum). Eurasian watermilfoil can quickly form thick mats in shallow areas of lakes and rivers. It has already been introduced into many lakes and rivers in Wisconsin including the Chippewa Flowage. Once in a body of water the eurasian watermilfoil will reproduce through stolons, fragmentation, and seeds. Its fast growing shoots and extensive canopy formation can obstruct recreation and navigation. Since it can grow in colder water than most submerged native plants it can shield out sunlight which will stifle native plants growth and eventually the native plants will be pushed out. The thick mats it produces can impact wildlife and fish, and decrease property values. |
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 Photo: Erik Olson |
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Control |
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| Mechanical, physical, chemical, and biological are all control options for eurasian watermilfoil. Since eurasian watermilfoil is such a widespread problem there are many different control techniques. Here are some examples of the various control methods: aquatic herbicides, diver hand-pulling, weevils, mechanical harvesting, hand raking, benthic barriers, and prevention/education. Since eurasian watermilfoil can reproduce vegetatively many mechanical methods only assist in spreading the milfoil. Also, there is not much research on the effectiveness of the various controls. | |
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Identification |
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| Boaters, waterfowl hunters, fisher people and other outdoor enthusiasts should know how to identify eurasian watermilfoil – detecting new infestations can prevent the spread of this plant. | |
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Here are
some good sites for the identification of eurasian watermilfoil |
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