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Aquatic plants

Aquatic plants… friends or foes?

Few people can identify any of the 35 species of aquatic plants that grow in Brome Lake. However, the distress of some users of the lake, aquatic plants appear as soon as in June. In too great numbers, the can become a nuisance for swimmers, fishers, pleasure-boaters and others. They can also choke the lake’s necessary oxygen supply and some invasive species risk replacing indigenous plants and harming biodiversity.

It would wrong, however, to regard aquatic plants as our enemies, because the help improve water quality. This they do by keeping sediment at the bottom of the lake, providing habitat for many organisms (including Brome Lake’s little star, the bridle shiner, considered a vulnerable fish species) and absorbing many of the lake nutrients, thus competing with the blue-green algae.

Prevention remains the best way to control the density of aquatic plants: install an effective shoreline buffer and don’t use fertilizers, which will only encourage plant growth. Also avoid churning up sediments and breaking up plants with boat propellers.

If you are interested, please read the following presentation (bilingual).

Aquatics Plants presentation