Influence of sediment chemistry and sediment toxicity on macroinvertebrate communities across 99 wadable streams of the Midwestern USA

The Science of the Total Environment
Patrick W MoranPeter C Van Metre

Abstract

Simultaneous assessment of sediment chemistry, sediment toxicity, and macroinvertebrate communities can provide multiple lines of evidence when investigating relations between sediment contaminants and ecological degradation. These three measures were evaluated at 99 wadable stream sites across 11 states in the Midwestern United States during the summer of 2013 to assess sediment pollution across a large agricultural landscape. This evaluation considers an extensive suite of sediment chemistry totaling 274 analytes (polycyclic aromatic hydrocarbons, organochlorine compounds, polychlorinated biphenyls, polybrominated diphenyl ethers, trace elements, and current-use pesticides) and a mixture assessment based on the ratios of detected compounds to available effects-based benchmarks. The sediments were tested for toxicity with the amphipod Hyalella azteca (28-d exposure), the midge Chironomus dilutus (10-d), and, at a few sites, with the freshwater mussel Lampsilis siliquoidea (28-d). Sediment concentrations, normalized to organic carbon content, infrequently exceeded benchmarks for aquatic health, which was generally consistent with low rates of observed toxicity. However, the benchmark-based mixture score and the pyrethroid insec...Continue Reading

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Citations

Mar 5, 2020·Environmental Toxicology and Chemistry·Patrick W MoranPeter C Van Metre
Feb 25, 2021·Ecotoxicology·Kara E Huff HartzMichael J Lydy
Aug 15, 2017·The Science of the Total Environment·Lisa H NowellMichelle L Hladik
Feb 13, 2019·The Science of the Total Environment·Ian R WaiteDaren M Carlisle
Mar 31, 2021·Environmental Science and Pollution Research International·Tiantian YangXiaofeng Zhang
Aug 17, 2021·The Science of the Total Environment·Ian R WaiteBarbara J Mahler
Dec 12, 2018·Environmental Science & Technology·Travis S SchmidtDaren M Carlisle

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