Error bars show standard errors. Note that these data are only for the forested part of the floodplain. The percentage of plots where the species was dominant was used for describing herbaceous species distributions on the flooding gradient. This Figure juxtaposes floodplain trees versus upland trees, native wetland shrubs versus invasive shrubs, and native floodplain herbs versus invasive herbs to illustrate the differences in distributions with respect to flooding. Acer saccharum includes hybrids with A. nigrum, and Fallopia japonica includes F. x bohemica hybrids.