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Bifenthrin causes trophic cascade and altered insect emergences in mesocosms: implications for small streams

Citation

Schmidt, T.S., Rogers, H.A., Hladik, M.L., Dabney, B.L., Mahler, B.J., Van Metre, P.C., 2016, Bifenthrin causes trophic cascade and altered insect emergences in mesocosms: implications for small streams: U.S. Geological Survey data release, http://dx.doi.org/10.5066/F7SX6BBZ.

Summary

Direct and indirect ecological effects of the widely used insecticide bifenthrin on stream ecosystems are largely unknown. To investigate such effects, a manipulative experiment was conducted in stream mesocosms that were colonized by aquatic insect communities and exposed to bifenthrin-contaminated sediment; implications for natural streams were interpreted through comparison of mesocosm results to a survey of 100 Midwestern streams, USA. In the mesocosm experiment, direct effects of bifenthrin exposure included reduced larval macroinvertebrate abundance, richness, and biomass at concentrations (EC50s ranged 197.6 – 233.5 ng bifenthrin/ g organic carbon) previously thought safe for aquatic life. Indirect effects included a trophic [...]

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Effect of bifenthrin on aquatic communities in a mesocosm
Effect of bifenthrin on aquatic communities in a mesocosm

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DOI https://www.sciencebase.gov/vocab/category/item/identifier doi:10.5066/F7SX6BBZ

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