I wish to thank all the contributors, my co-editor Brian Timms and the referees of the above papers for their cooperation, and Koen Martens, Editor-in-Chief of Hydrobiologia and Martine van Bezooijen of Springer for their encouragement. The referees are listed above. I wish to express my sincere thanks to my research assistants, Ellen Beddell and Annabeth Kemp, for their support in word processing and formatting of the papers. Finally I am grateful to Curtin University of Technology, Perth, Western Australia for providing the venue for the conference and facilities for completing the editing of this volume.