Learn About Invasive Species

Invasive species are considered one of Canada’s greatest threats to the survival of our wild animal and plant life. These species arrive, often accidentally, and establish in the absence of natural predators. As a result, these species kill, crowd out, and devastate native species and their ecosystems.

Invasive plants and animals not only threaten wildlife, woodlands, and waterways, but they also cost Canada billions of dollars in losses to forestry, agriculture, fisheries, and other industries affected by their impact.

Invasive species are plants, animals, insects, and pathogens that are introduced to an area and cause harm to the environment, economy, or society. Non-native species aren’t automatically considered invasive species just because they come from a different area of the world – they must also cause negative environmental, economic, or social impacts

Economic Impacts

The ISC conducted an Ontario-wide survey to understand the cost for municipalities and conservation authorities

Legislation and Policy

Federal, provincial, and municipal governments all have a role to play in regulating invasive species spread and management

Risk Assessment

The goal of this database is to provide a record of completed risk assessments relevant to North America – search a species and find all the information

Meet the Species

What Is at Risk


External Resources

Invading Species 

Asian Carp Canada 

Ontario Ministry of Natural Resources