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Storm-event-transport of urban-use pesticides to streams likely impairs invertebrate assemblages.


ABSTRACT: 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?

SUBMITTER: Carpenter KD 

PROVIDER: S-EPMC4869748 | biostudies-literature | 2016 Jun

REPOSITORIES: biostudies-literature

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Storm-event-transport of urban-use pesticides to streams likely impairs invertebrate assemblages.

Carpenter Kurt D KD   Kuivila Kathryn M KM   Hladik Michelle L ML   Haluska Tana T   Cole Michael B MB  

Environmental monitoring and assessment 20160512 6


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 dissolv  ...[more]

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