What are Invasive Species?
Invasive species are plants, animals, fungi and microorganisms from other parts of the world that do not naturally occur in an area, and that cause economic or environmental harm, or harm to human health.
Why Should We Care?
Invasive species are causing serious impacts all across BC, Canada, and worldwide.
- Invasive plants can produce skin irritation, trigger allergies and poison pets and livestock.
- Invasive plants can clog waterways, kill native trees, and shade out crops, ornamentals and native plants.
- Invasive species cost Canada about 34.5 billion dollars annually.
- In BC, just six invasive plants cost the province over $65 million in 2008.
- If zebra mussels were to become established in BC, the estimated cost of management is $22 million.
- According to the World Conservation Union, the spread of invasive alien species is the second most significant threat to biodiversity, next to habitat loss.
- Invasive species are found in every habitat, including oceans, lakes, streams, wetlands, croplands, rangelands, natural areas, parks, forests, and even our yards and gardens.
Here are some invasive species commonly found throughout British Columbia.
Spotted (Centaurea biebersteinii) and diffuse knapweed (Centaurea diffusa) are biennial to short-lived perennials, and considered regionally noxious under the BC Weed Control Act. Currently distributed throughout southern BC, both spotted and diffuse knapweed are a…learn more