Aquatic invasive species are non-native plants and animals that disrupt ecosystems, harm wildlife, and impact recreation. Learn how they spread, the problems they cause, and safe methods for control and management.
Florida Fish and Wildlife Conservation Commission, the state’s lead agency for hydrilla control since July 1, 2008 faces a daunting challenge. Not only must the agency manage the spread of hydrilla it must maintain waterways for boating navigation and flood control, but it must also consider the wants of Florida residents. While everyone agrees that
The (American) Okanogan County Noxious Weed Control Board has applied to a national environmental agency to treat Eurasian water milfoil with an aquatic herbicide, much to the dismay of the (Canadian) Okanagan Basin Water Board. Osoyoos Lake is located in Osoyoos, British Columbia and Oroville, Washington; making it an international lake. The Boundary Waters Treaty
During a comprehensive fish survey which included spring, summer and fall netting and electrofishing surveys, Greg Matzke, a fisheries biologist for the Wisconsin DNR discovered that all of the lake’s largemouth bass were older than 5 years of age. After intense sampling last year, only one black crappie was under six years of age and
The war against milfoil in Lake Sunnyside, New York has largely been won — but at the cost of leaving the lake vulnerable to invasion from another plant. Now, curly-leaf pondweed is taking over the lake, and stewards must fight that one too. The problem was that milfoil occupied nearly all of the shoreline, the
The ongoing battle against aquatic weeds is getting tougher as one of the most invasive species is developing an herbicide-resistant strain and ongoing drought changes the landscape of the lakes. Some lakes use mechanical harvesters to cut weeds and haul them away. In Paddock Lake, Wisconsin, Administrator Tim Popanda said, a two-man crew works on
A scheduled treatment of Eurasian watermilfoil in Lake Opechee in New Hampshire was postponed when the chemical herbicide, Sculpin which is a formulation of 2,4-D, was found to have produced less than optimal results at other locations. While used successfully in the past, recent visits to other locations treated with the herbicide showed the ineffectiveness.
University of Minnesota researchers have reported limited success from an experiment to control an invasive weed in Lake Koronis near Paynesville. Researchers from the Minnesota Aquatic Invasive Species Center have studying how to combat starry stonewort , which has been spread to 11 lakes across the state. They found that a combination of mechanical harvesting
Authorities in the Medong delta province of Hau Giang have banned local authorities from spraying herbicide to the water hyacinth. This fast growing plant has slowly been taking over and blocking waterway traffic on rivers and canals in the area. Many people breed water hyacinth locally to use for making exportable products such as baskets
The Cazenovia Town Board in December unanimously approved a resolution to undertake chemical treatment of Eurasian Watermilfoil in Cazenovia Lake this year, and this week the board started the municipal process to move the treatments forward. In two unanimously approved resolutions, the board stated that the proposed herbicide treatment of the New York lake may
Chemicals used to attack a dense bed of milfoil in Glen Lake in Queensbury, may have been hurting the lake as well, according to New York Department of Environmental Conservation. The DEC had some concerns that the chemical was affecting the native plant growth and also the fish, who need the plant growth. Fish eat