What does the term 'introduced species' refer to?

The term 'introduced species' specifically refers to nonnative species that are brought into a new environment, either intentionally or accidentally, by human activity. These species may be introduced for various reasons, such as agriculture, horticulture, or even for controlling other pest species. Once introduced, they can interact with the local ecosystem in diverse ways, sometimes leading to significant ecological shifts.

Understanding this term is crucial, as introduced species can become invasive, outcompeting native species for resources and disrupting the existing ecological balance. This can lead to a decline in biodiversity and alter habitat structures. The knowledge of introduced species is essential in fields like ecology, conservation biology, and environmental management, as it helps in devising strategies to control or mitigate their impact in an ecosystem.