Herbicide Treatments Linked to Fish Declines in Lake Ellwood

/ Published in Aquatic Herbicides, Aquatic Invasive Species
Aquatic vegetation growing on surface water.
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

Ineffective Herbicide Delays Milfoil Treatment in Lake Opechee

/ Published in Aquatic Herbicides, Aquatic Invasive Species
Aquatic Invasive eurasian watermilfoil, is an aquatic plant that forms dense mats of vegetation on the water’s surface.
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.