By Tom Spears, Ottawa Citizen, June 4, 2015

Zebra mussels, the sharp-shelled invasive species that coats lake bottoms and
river shorelines, have been found spreading in Lac Deschênes in Aylmer. This
disproves the theory (and hope) that the Ottawa River’s water is too soft for
the mussels to survive, says André Martel, a mussel expert at the Canadian
Museum of Nature. via
Zebra mussels spreading upstream in Ottawa River, biologist warns | Ottawa
Citizen.