Ants are important seed dispersers, and these tiny champions often form very tight relationships with plants, especially forest herbs. Some plants even provide food resources specifically to attract their favorite ant mutualists. But, when invasive species or climate change come onto the scene, these close relationships are vulnerable to disruption. Both plant and ant invaders have the potential to impact native mutualisms, with potentially devastating consequences for communities. Prior will discuss her work characterizing these mutualisms and her research on best management practices of invaded ecosystems.