Join us for our Quarterly CRISP Partner Meeting, share what Invasive Species work you are doing, and learn what other organizations are doing to stop invasive species. Our featured speaker is Tim McCay, professor at Colgate University, who will describe recent findings in earthworm ecology relevant to the Northeast. The earthworm species pool in northeastern North America consists of native species, putative exotic species from Europe that have likely been here for centuries, and recently-arrived exotic species from Asia. The dynamic interactions among these species provide a “natural experiment” in ecology, but to date we have learned very little about how things are playing out. In the presentation you will learn that (1) native species are probably more important in the Northeast than you thought, (2) the invasion of habitats by European species is still relevant and consequential, even hundreds of years after introduction, and (3) the potential impact of Asian "crazy worms" in North America is virtually unknown (but seems awful).