A study in Laikipia county, Kenya, showed big-headed ants disrupting the local ecosystem.

The invasion of these ants affected the relationship between native ants and acacia trees, leading to a decline in tree cover.

The decrease in tree cover altered lion's hunting behavior, with them hunting African buffalo instead of zebras.

The invasive ants have displaced native ants that protect acacia trees, leading to overgrazing by elephants and fewer hiding spots for lions.

The study emphasized the concept of trophic cascade, demonstrating how changes in one species can affect an entire ecosystem.

The spread of big-headed ants could lead to significant ecological changes and affect other species reliant on acacia trees.

Researchers highlight the need for understanding ecosystem relationships to preserve biodiversity, and are seeking solutions to prevent further tree cover loss.

The study also raised concerns about long-term implications for lion and buffalo populations, and the overall plant community.

Further research is needed to understand and control the spread of the invasive ants.