Exotic Species

There are many exotic species that are being introduced into ecosystems that are taking over a niche that was occupied by another species. The exotic species takes the food from the old species and drives them out. This happens during the novel. A new super-predator salmon is introduced into a artic ecozone, this species killed all the fish in the area because the new salmon ate it all. This severely disturbed the relationship between the animals and the ecosystem because many species were extirpated from this area. This happens commonly in Canada, such as the zebra muscles.