By CBC News Ottawa, June 20, 2020
If you've walked along the Queen Elizabeth Driveway recently, you may have noticed some unusual greenery in full bloom.
Parks Canada says it's aware a green algae is growing on the city's canals, but says the pond scum isn't dangerous.
"It's a completely natural thing for algae blooms to develop on waterways," said Dale MacEachern, a spokesperson for the federal agency. "And again, there's no risk to people."
According to Parks Canada, the blooms, identified as green filamentous algae, don't produce toxins like blue-green algae.
The canal's new look could be the result of a combination of warmer temperatures, high-nutrient deposits in the water and less boat traffic keeping the waterways still, MacEachern said.https://www.cbc.ca/news/canada/ottawa/algae-blooms-canal-1.5620801