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Invasive Species

• •  Eurasian Milfoil

Aquatic Plants

From 2007 to 2009, an increased volume of plants was reported in Lac Mahon, apparently including Eurasian milfoil. Increased phosphate use was identified as a likely cause. Harvesting was considered the best control, with collection and disposal away from the lake. The Association considered buying a manual cutter but didn't due to liability issues. Fortunately, aquatic plants (milfoil or otherwise) receded after that.

In 2017, concerns about the presence and spread of Eurasian milfoil in Lac Mahon led to a field study done by ABV des 7 to inventory aquatic plant beds in the lake. See Eurasian Milfoil.

Other Invasive Species

See attached fact sheets and guides, also

• • Ontario's Invading Species Awareness Program.

  • Ontario Invasive Species

    • Action plans

Invasive species spread primarily as hitch-hikers on boats, trailers and equipment, so boat-cleaning is a key preventative, see the Boat-washing checklist and Boat pressure-washing (in News).

Link

• Invasive exotic species - 5 steps to protect your lake (YouTube video)