Journal article

COMBINING RAPID BIOASSESSMENT AND FIELD-BASED MICROCOSMS FOR IDENTIFYING IMPACTS IN AN URBAN RIVER

Matthew L O'Brien, Vincent Pettigrove, Melissa E Carew, Ary A Hoffmann

Environmental Toxicology and Chemistry | SETAC PRESS | Published : 2010

Abstract

Rapid bioassessment indices based on macroinvertebrates are the most commonly used tools for assessing stream condition. However, once stream degradation has been detected, it is often difficult to identify which environmental stressors are most important because of changes in multiple correlated factors. In this study, we examined eight sites in an urban river watershed using a field-based microcosm experiment and the rapid bioassessment-based biotic index, SIGNAL. The experiment assessed the effects of polluted river sediment by examining the macroinvertebrate taxa that colonized sediments at an unpolluted wetland. Results were compared with an assessment of field-collected macroinvertebra..

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