Invasive Species, Health, and Global History Afterword:The Disavowal of Human Agency

The papers in this special issue explore the metaphorical realms that inform discourses on disruptive plants and animals. They explore how species movements in the twentieth century were framed and interpreted, and the medical, scientific, legal, and bureaucratic processes that turned a non-native or mobile species into a formally designated “invasive” one. In doing so, they allow insight into the mechanisms of disavowal, how some species were constructed as the cause of disease and ecological change, while others escaped censure.