Didymo Algae

In 2006, a new aquatic invasive species called Didymosphenia geminata appeared in Rivière Matapédia. This alga, also known as didymo, is not toxic. It is not harmful to human health and does not render water unfit for consumption. However, once it has invaded a water body, it can modify natural habitat and species composition of the various algae and invertebrates living on the bottoms of rivers and lakes. In this section, you will find information that can be used to raise the awareness of persons who fish and canoe our waters so that they can take the necessary precautions and avoid spreading invasive algae.

For more information:

• 2008 Progress Report (French, PDF file, 236 Ko)  New

• What is Didymo and how can we prevent it from spreading in our rivers? (PDF file, 335 Ko)

• Have you seen these algae? Didymosphenia geminata « Didymo » (PDF file, 953 Ko)

• Didymo algae … a new intruder? (PDF file, 92 Ko)

• Frequently asked questions (French) (PDF file, 118 Ko)

• Did you know that the first Didymo blooms that spread to Québec occurred in Summer of 2006? (French) (Le Coin de Rafale - Youth Section)

• Visual observation of a Didymo bloom

• Poster (French) (PDF file, 264 Ko)

• Cleaning methods to stop the spread of didymo (PDF file, 38 Ko)