An Invasive Species is any plant or animal species that is introduced into an environment where the species is not native. There are numerous examples of plants, insects, birds and animals that have been transplanted from their natural environments, either by accident or intentionally, into areas where they end up having a serious impact on the natural ecosystem. In some cases, climate change is contributing factor in some plant and animal species creating environmental damage as the plants and animals extend into new areas, or the natural controls against them collapse. The Pine Beetle is often noted as an example of how the warmer and shorter winters contributed to the massive infestations in BC.
In addition to the natural environment impacts, some invasive plants can speed up the deterioration of public and private infrastructure. Just as the tree that you planted 20 years ago in the back yard has now grown to the point that the root system is pushing up your driveway, or the Ivy you planted has completely grown over your retaining wall and rooted into the cracks in the concrete or wood ties, invasive plants can accelerate the destruction of man-made materials.