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Biodiversity:
Ecological Effects of Species Introductions and Extinctions
by Waterose et. al.
Biodiversity is important because all species have intrinsic value, we use them for food and medicine, and they provide essential services such as photosynthesis, the recycling of nutrients, and cleansing of ecosystems. Biodiversity makes Earth habitable and keeps ecosystems functional.
An Introduced Species, also called an exotic or an alien, is a non-indigenous species, that makes very large geographic jumps quickly by means that are not natural to that species; these routes are called vectors. Most Vectors are anthropogenic. Exotics can be introduced in either the adult or larval form. Some of these vectors include: floating debris, ballast from foreign ships, the bottom of float planes, importation of live exotic foods, science experiments run amok, aquarium trade, movement through canals, packing materials, nursery stock, mail order, and biological control species (Jamieson, 1997).
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