Since the publication of her first book on gender in literary and medical discourse (Poison Woman: Figuring Female Transgression in Modern Japanese Culture, University of Minnesota Press, 2007), Marran writes about environment, aesthetics, and animals in literature and visual culture. She is currently completing a book manuscript on what she calls “biotropes” in Japanese literature and film. She has published in Japan at Nature’s Edge: The Environmental Context of a Global Power, and the journals Environmental History, Antennae: The Journal of Nature in Visual Culture, Mechademia and elsewhere.