Mallard Lake: Invasive Shoreline Vegetation Treatment Continues
Thick stands of invasive common reed once established large populations along Mallard Lake at Mallard Lake Forest Preserve in Hanover Park. This invasive species, also called phragmites, reduced shoreline access for wildlife watchers and anglers and degraded habitat for native plants and animals.
In fall 2011 the Forest Preserve District of DuPage County treated common reed found along Mallard Lake’s shoreline and wetlands with an herbicide designated for emergent aquatic species by hand and helicopter. Follow-up herbicide treatments for phragmites and other invasive species such as Canada thistle and teasel occurred in 2012, are ongoing in 2013, and will be scheduled as necessary in 2014. Native plant seeding is scheduled for winter 2013 – 2014.
The District’s aerial treatments for gypsy moths in forest preserve woodlands were so successful in 2010, that treatments were not needed in following years. This freed up funds for aerial herbicide treatments by helicopter for common reed. In addition, the District has received a $45,000 grant from the Illinois Environmental Protection Agency through their Priority Lake Watershed Implementation Program to assist with herbicide treatments and seeding. The District will fund supplemental control as needed.