Institution: | Division of Biological Sciences, Institute of Environmental and Biological Sciences, Lancaster University, Lancaster LA1 4YQ, UK;University of Kuopio, Department of Ecology, P.O.B. 1627, SF-70211, Kuopio, Finland;FB 9.4, Institut für Angewandte Botanik, Universität Gesamthochschule, Essen, Postfach 103763, 4300 Essen 1, Germany |