All About Algae
There are several thousand different types of algae living in our waterways and they are an important link in the aquatic food chain. They convert nutrients to organic matter, providing food for animals like plankton and fish, and they help oxygenate the water.
While critical to our aquatic life, excessive growth of algae caused by high concentrations of phosphorous (phosphates) can shift the natural balance by acting like a fertilizer and cause an algal bloom.
An algal bloom can:
- Colour a water body green, brown or yellow
- Affect the taste and smell of fresh water
- Fresh blooms might smell like newly mown grass
- Older blooms smell like rotting garbage
- Large blooms often occur during late summer and early fall
Some algae species such as Blue-Green algae, can be toxic to humans and animals and will cover the water with a fluorescent paint-like scum.
If you suspect a toxic bloom, it is best to be cautious and avoid using the water. This includes doing your best to keep your pets out of the lake! It’s not safe for them either and can cause serious illness and death.
Recent Northwestern Health Unit Release June 15 »
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