The Ministry of Natural Resources and Forestry and the Ministry of Environment are working to prevent and control the spread of invasive species in Dryden.
Staff, biologists and students spent two days this week removing European frog-bit from the Laura Howe Marsh.
The invasive species is found in areas with limited wave action, such as slow-moving water, sheltered inlets, ponds, rivers and ditches.
The European frog-bit forms large, dense floating mats of intertwining plants that may compete with native submerged plants for light and nutrients.
Officials say it may impede water flow, watercraft and some recreational activities.
The plant has become widespread in the quiet bays of Wabigoon and Dinorwic Lakes, crowding out native aquatic plants, including wild rice.
