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Storm-event-transportof urban-usepesticides to streamslikely impairsinvertebrateassemblages Kurt D. CarpenterKathryn M. KuivilaMichelle L. Hladik2016 год

Storm-event-transport of urban-use pesticides to streams likely impairs invertebrate assemblages
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Аннотация: Insecticide use in urban areas results in the detection of these compounds in streams following stormwater runoff at concentrations likely to cause toxicity for stream invertebrates. In this 2013 study, stormwater runoff and streambed sediments were analyzed for 91 pesticides dissolved in water and 118 pesticides on sediment. Detections included 33 pesticides, including insecticides, fungicides, herbicides, degradates, and a synergist. Patterns in pesticide occurrence reveal transport of dissolved and sediment-bound pesticides, including pyrethroids, from upland areas through stormwater outfalls to receiving streams. Nearly all streams contained at least one insecticide at levels exceeding an aquatic-life benchmark, most often for bifenthrin and (or) fipronil. Multiple U.S. EPA benchmark or criterion exceedances occurred in 40 % of urban streams sampled. Bed sediment concentrations of bifenthrin were highly correlated (p < 0.001) with benthic invertebrate assemblages. Non-insects and tolerant invertebrates such as amphipods, flatworms, nematodes, and oligochaetes dominated streams with relatively high concentrations of bifenthrin in bed sediments, whereas insects, sensitive invertebrates, and mayflies were much more abundant at sites with no or low bifenthrin concentrations. The abundance of sensitive invertebrates, % EPT, and select mayfly taxa were strongly negatively correlated with organic-carbon normalized bifenthrin concentrations in streambed sediments. Our findings from western Clackamas County, Oregon (USA), expand upon previous research demonstrating the transport of pesticides from urban landscapes and linking impaired benthic invertebrate assemblages in urban streams with exposure to pyrethroid insecticides.
Год издания: 2016
Авторы: Kurt D. Carpenter, Kathryn M. Kuivila, Michelle L. Hladik, Tana L. Haluska, Michael B. Cole
Издательство: Springer Science+Business Media
Источник: Environmental Monitoring and Assessment
Ключевые слова: Pesticide and Herbicide Environmental Studies, Environmental Toxicology and Ecotoxicology, Urban Stormwater Management Solutions
Другие ссылки: Environmental Monitoring and Assessment (PDF)
Environmental Monitoring and Assessment (HTML)
PubMed Central (HTML)
PubMed (HTML)