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Lake Superior is known for its pristine waters, but a combination of nutrient additions from increasing human activity (including farming and development), warming temperatures and stormy conditions have resulted in more frequent blooms of potentially harmful algae.

Cyanobacteria thrive in freshwater systems with warmer water temperatures and elevated nutrient inputs, typical of highly urbanized and agricultural landscapes.

Cyanobacterial blooms have the potential to produce toxins, such as microcystins and other cyanotoxins, that can adversely affect humans and the environment.

These toxins can create an unpleasant taste and odor in water, interfere with water treatment, cause gastrointestinal issues and liver damage in humans and have even proven fatal to pets and livestock.

Unfortunately, as the planet warms, more and more parts of Canada are experiencing harmful algal blooms. Our team has set out to try and understand the extent of the problem in Lake Superior, and what can be done about it.

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