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Submodule 2: Invasive Species Defined
Where They are Found
Throughout the US, wherever invasive species are looked for, they are found. Almost every part of the US contends with at least one major invasive species. Their numbers are generally underestimated unless they cause serious problems in agriculture, industry, or human health, or are seriously damaging to protected areas.
Because invasive species consist of both land and aquatic species from different kingdoms (bacteria, fungi, plants, and animals), they can be found just about anywhere life occurs. In the US, Florida and Hawaii have the greatest numbers and varieties of invasive species; this seems to be largely because of their geography and climate, but their economy also plays a role. The situation is especially desperate in Hawaii as over half of the species living independently on the islands are non-native.
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