A review of ecology based classification systems for standing freshwaters January 2002 Murphy, K.J. 1 , Kennedy, M.P. 1 , McCarthy, V. 2 , Ó’Hare, M.T. 1 , Irvine, K. 2 and Adams, C. 1 1 Institute of Biomedical and Life Sciences, Division of Environmental and Evolutionary Biology, University of Glasgow. 2 Department of Zoology, University of Dublin, Trinity College. SNIFFER Project Number: W(99)65 Environment Agency R&D Technical Report: E1-091/TR © SNIFFER 2002