About the Author: A. M. Gurnell, Professor of Physical Geography. Her research interests are at the interface between hydrology, geomorphology and plant ecology, with particular emphasis on the morphodynamics and sustainable management of rivers and their margins. Her current research is pursuing three main research themes: (i) interactions between vegetation and fluvial processes; (ii) the hydroecological characteristics of urban rivers; (iii) improving the science underpinning river restoration.