Michael L. Rosenzweig (b 1941) is an ecologist at the University of Arizona who has developed and popularized the concept of Reconciliation ecology. He founded and developed the Department of Ecology and Evolutionary Biology, at UA Tucson, now a major center for the study of Evolutionary Ecology. He has published a number of books on the origins and conservation of species diversity, both for technical and general audiences. He received the Eminent Ecologist Award from the Ecological Society of America in 2008.