Which term refers to species introduced by human activities to areas where they do not naturally occur?

The term that refers to species introduced by human activities to areas where they do not naturally occur is "non-native species." These species may be brought in for various reasons, such as for agriculture, ornamental purposes, or even accidentally through transport. Non-native species can sometimes thrive in their new environments, leading to ecological changes and potential competition with native species, which can disrupt local ecosystems.

In contrast, native species are those that naturally occur in a given area, having evolved there over time. Indigenous species also refer to species that are native to a certain region, often used interchangeably with native but can imply a more historical context. Endemic species are those that are unique to a specific geographical location and are not found anywhere else in the world. Understanding these distinctions is crucial in aquatic pest management as it aids in identifying potential threats to local biodiversity and ecosystems.