What does the term "invasive species" describe?

The term "invasive species" specifically refers to non-native organisms that, when introduced to a new environment, can disrupt local ecosystems and biodiversity. These species often thrive in their new habitat, outcompeting native species for resources such as food, light, and space. This can lead to significant ecological changes, including the decline or extinction of native species, alteration of habitat structures, and disruption of food webs. Invasive species can also bring diseases that affect local wildlife and plants, further exacerbating their negative impact on biodiversity.

In contrast, native organisms that adapt well to local environments do not fall under the definition of invasive species; they are part of the established ecosystem. Endangered species are those at risk of extinction but are not classified as invasive simply due to their conservation status. Lastly, species that are beneficial to local ecosystems typically support biodiversity and ecosystem function, which is contrary to the disruptive nature of invasive species.