According to the Convention on Biological Diversity, invasive alien species are species whose introduction and/or spread outside their natural past or present distribution threatens biological diversity. For a species to become invasive, it must:
Invasive alien plants can cause serious economic, social and environmental damage.
In 2005, we recorded 67 species of invasive alien plants on our lands. Ten of these species are considered to be extremely invasive. Below is the number of alien species recorded in each sector.
In total, alien species have invaded 30 percent of the area of high-value natural habitats on NCC urban lands.
We are continuing to monitor trends with respect to the size of the populations and colonies of invasive alien plants in natural habitats and high-value ecosystems.
Our projects are based on three areas of action in the fight against invasive alien plants