The effects of foreign species introduction into an ecosystem are very profound. From small microorganisms to species of large mammals, many foreign species introductions occur every day. New implications of their introduction are found just as often.
When a foreign species is introduced into an ecosystem, often the ecosystem contains no natural predators for the new species. This lack of predators sometimes leads to; in conjunction with a supply of food suitable for the new species, a period of exponential growth of the species. This growth and severe increase in the size of the population can cause a shortage of food for native species. When this occurs, the native species disappear and the biodiversity in the ecosystem is reduced. The carrying capacity is also reduced because the ecosystem will not be capable of supporting the same amount of life. …
