Brazil France Germany India Indonesia Iraq South Africa
 
 
Sign up for our
free e-newsletter.





Case Studies
E-Newsletter
News
Resources
Water Management Associations
 
Fight Against Invasive Hydbrid Plant More Complicated
Lake Minnetonka is the 9th largest lake in Minnesota and of the most popular among boaters, fishermen and recreationalists. However, the popularity doesn’t come without environmental issues. Invasive species such as curly-leaf pondweed, purple loosestrife, Eurasian watermilfoil and zebra mussels have been discovered as well as dealing with various sources of pollution which has affected water quality.

Lake Minnetonka has been a site for continuous research and management of aquatic invasive species. Many different management techniques are used. Allowing native bluegill populations to flourish may reduce common carp populations as they eat the carp larvae over the winter months, a copper –based pesticide proved positive in managing zebra mussels, flowering rush has been removed by hand pulling, beetles have been successful in controlling purple loosestrife, weed harvesters remove the mats of Eurasian watermilfoil and annual herbicide treatments reduced curly-leaf pondweed.

While northern watermilfoil is native to Minnesota, Eurasian watermilfoil and now hybrid milfoil (a cross between the invasive Eurasian watermilfoil and northern watermilfoil) is an invasive species. Researchers examining the status of this hybrid milfoil in Lake Minnetonka discovered hybrid milfoil are more prevalent in areas treated with herbicides than those areas with little management. This may suggest large scale herbicide treatments to control other aquatic invasive species could promote hybrid watermilfoil growth and some hybrids may show greater tolerance to treatment.

This just goes to show how various control methods may be required in order to maintain a balance between not only the various invasive species in a water body, but native populations as well.



 
Click for the full article
 


About Us Categories From The Gallery   News Updates News Updates

Our Company
Case Studies
Products
Site Map

Resources/Tools
Parts/Service
International

Lake Quitman’s Water Hyacinth Has Returned - Difficult to control due to its high rate of reproduction and the persistence of seed banks in the sediment, water hyacinth reproduces rapidly and can quickly cover large portions of a lake’s surface, blocking access for boaters, reducing dissolved oxygen available for fish and other aquatic organisms and generally impairing water quality.


© 2010 Copyright Aquarius Systems. All Rights Reserved. info@aquarius-systems.com   |   (262) 392-2162