An International Journal of Ecology, Evolution and Environment The Population Dynamics and Ecological Effects of Garlic Mustard, Alliaria petiolata, in a Minnesota Oak Woodland MARK A. DAVIS, 1 ABBY COLEHOUR, JO DANEY, ELIZABETH FOSTER, CLARE MACMILLEN, EMILY MERRILL, JOSEPH O’NEIL, MARGARET PEARSON, MEGAN WHITNEY, MICHAEL D. ANDERSON AND JERALD J. DOSCH Department of Biology, Macalester College, Saint Paul, Minnesota 55105