Does this map show products being shipped or travel destinations for invasive species?
Invasive species alter ecosystem resulting in a variety of negative consequences. One of the biggest issues is that invasive species out compete native species, this results in the displacement of native species, if not extinction. This can have huge effects on the invaded ecosystem, if the native species that is driven out is a keystone species then the loss of that species can cause a trophic cascade, resulting in an even greater reduction in species within the area. Hence invasive species can lead to a reduction in biodiversity. This reduction in biodiversity can lead to a reduction in certain ecosystem services provided by the land, this is another problem related to invasive species. To fully see the scope that invasives can have it is best to highlight a few prominent cases of invaders.