Invasive species are plants, animals or microorganisms (virus and bacteria) that cause harm to an ecosystem because they are not native to that environment. They are usually introduced to new environments through human activities. Invasive species can thrive due to the absence of native diseases and predators that would usually keep their numbers in balance.

Invasive species are among the most significant threats to ecosystems in North America, threatening the environment, the economy and human health.

Only a small percentage of foreign species are capable of establishing in Manitoba, but these organisms pose a significant threat as they out-compete native organisms for food and resources. Once an invasive species becomes established, it is virtually impossible to control or eradicate.

The annual cost to control invasive species in Canada has been estimated at $13 billion to $35 billion. Therefor, preventing establishment of invasive species in the first place is critical.

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