A species moved by humans beyond its natural geographic range. Introduction is defined relative to location, not only national boundaries.
An introduced species whose establishment and spread cause adverse effects under the specified ecological definition. Presence outside the native range does not alone establish an impact.
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Introduced species, also known as non-native or alien species, are organisms that have been brought to a new environment or ecosystem outside their natural range, often as a result of human activity. These species can be introduced intentionally or accidentally and may include plants, animals, fungi, and microorganisms. Introduced species can have significant effects on their new environments.