nonindigene

Nonindigene refers to a living organism that is not native to a particular geographic area. It is a term used in ecology and conservation to describe species that have been introduced to an environment outside of their natural range. These introductions can occur naturally through migration or through human activities such as trade, travel, or intentional release.

The term is often used interchangeably with "exotic species," "alien species," or "introduced species." However, some contexts may distinguish between these terms based on the mechanism or impact of the introduction. A nonindigene species may or may not become established in its new environment. If it successfully reproduces and spreads, it may be referred to as an "invasive species" if it causes ecological or economic harm.

The study of nonindigene species is important for understanding ecological dynamics, biodiversity loss, and the potential impacts of global change. Conservation efforts often focus on preventing the introduction of new nonindigenes and managing or eradicating established populations that pose a threat to native ecosystems. The presence of nonindigenes can lead to competition with native species for resources, predation, the introduction of diseases, and alterations to habitat structure.