Application of a sediment quality triad and different statistical approaches (Hasse diagrams and fuzzy logic) for the comparative evaluation of small streams.

摘要: In order to evaluate the ecotoxicological contamination of 12 aquatic sites in streams within catchment area Neckar River, a sediment quality triad (SQT) approach was applied. contrast Chapman's original approach, not only sediments, but also surface waters were examined. brief, obtain comprehensive insight into potential hazard, both acute toxicity and more specific effects such as mutagenic, genotoxic, teratogenic, dioxin- estrogen-like responses recorded. Different statistical methods (ranking, cluster analyses, Hasse diagram techniques, fuzzy logic) for evaluation presentation SQT data compared with respect needs environmental decision-making. Results document advantages disadvantages applied classification complex matrixes. The ranking procedure presented well technique seem be suitable tools elucidate pattern load. However, these require expert knowledge interpret results decision-making sciences policy. contrast, logic allows develop site-specific systems assess burden give contamination.