New research by Cardiff University has measured the impact of ant invasions on native species at a global scale for the first time, finding that the introduction of invasive ants into new environments can reduce species numbers by 53% through competition and predation.
of ants have been transported by humans globally and can cause major problems, even contributing to the extinction of some animal species.
Invasive ants possess adaptations that allow them to dominate most native ant species. This includes being able to eat a wide and general diet, as well as forming supercolonies—interconnected nests consisting of multiple queens and that can spread over large areas. "But this means, through human transportation around the world, we have introduced different non-native species of ants into new areas—this can cause a lot of problems for the ecosystems and biodiversity in that area. Invasive ants are generally expected to lowershow that the effect of invasive ants might vary depending on where they invade and between different groups of animals.
The researchers extracted data from 46 published articles investigating the responses of animals to ant invasion in areas relatively unimpacted by other stressors, such as human disturbance. They focused on the impacts on the abundance and richness of species in those locations after ant invasions.
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