Evaluation and application of methods for biological assessment of streams: summary of papers

During the past decade, new biological assessment methods have been developed for use in inland waters. Less work has gone into objective testing of the individual methods and their diagnostic or other capabilities, and very little effort has been devoted to comparing methods. This special issue of Hydrobiologia brings together a number of the most recently developed bioassessment methods, or aspects of them, so readers can begin to compare their potential value and practical usefulness.