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Invertebrate Community Metrics from Imidacloprid Mesocosms To investigate the effects of imidacloprid on natural stream communities under controlled conditions, experimental streams were dosed with imidacloprid at concentrations ranging from 0.061 to 220 micrograms per liter (µg/L) for a period of 10 days. Natural stream macroinvertebrate communities were obtained from the Cache La Poudre River (Larimer County, CO) by colonizing trays full of large gravel for 75 days. The trays were added to laboratory experimental streams (mesocosms) at the USGS Fort Collins Science Center in Fort Collins, CO. At the end of 10 days, invertebrate abundance metrics were analyzed in relation to measured imidacloprid concentrations in water from the experimental streams. Declines in total... Tags: Colorado, Fort Collins, aquatic insect communities, imidacloprid, neonicotinoid, All tags... pesticides, toxicity, water quality, Fewer tags Aqueous Phases of Bifenthrin in Mesocosms 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... Categories: Data; Types: Citation; Tags: Illinois, Indiana, Iowa, Kansas, Kentucky, All tags... Michigan, Midwest United States, Minnesota, Missouri, Nebraska, Ohio, South Dakota, Wisconsin, adult emergence, aquatic insect communities, aquatic-terrestrial linkages, bifenthrin, contaminants, mesocosm, pesticides, sediment quality, suspended sediment, trophic cascade, water quality, Fewer tags Characteristics of Spikes Delivered to Mesocosms 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... Categories: Data; Types: Citation; Tags: Illinois, Indiana, Iowa, Kansas, Kentucky, All tags... Michigan, Midwest, Minnesota, Missouri, Nebraska, Ohio, South Dakota, Wisconsin, adult emergence, aquatic insect communities, aquatic-terrestrial linkages, bifenthrin, contaminants, mesocosm, pesticides, sediment quality, suspended sediment, trophic cascade, water quality, Fewer tags Bifenthrin Absorption to Mesocosm Walls Resulting From the Delivery of a Bifenthrin Spiked Suspended Sediment 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... Categories: Data; Types: Citation; Tags: Illinois, Indiana, Iowa, Kansas, Kentucky, All tags... Michigan, Midwest United States, Minnesota, Missouri, Nebraska, Ohio, South Dakota, Wisconsin, adult emergence, aquatic insect communities, aquatic-terrestrial linkages, bifenthrin, contaminants, mesocosm, pesticides, sediment quality, suspended sediment, trophic cascade, water quality, Fewer tags Concentration of Bifenthrin in Adult Insects That Emerged from Mesocosms 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... Categories: Data; Types: Citation; Tags: Illinois, Indiana, Iowa, Kansas, Kentucky, All tags... Michigan, Midwest United States, Minnesota, Missouri, Nebraska, Ohio, South Dakota, Wisconsin, adult emergence, aquatic insect communities, aquatic-terrestrial linkages, bifenthrin, contaminants, mesocosm, pesticides, sediment quality, suspended sediment, trophic cascade, water quality, Fewer tags General Water Chemistry and Temperature Data from Mesocosms Exposed to Bifenthrin 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... Categories: Data; Types: Citation; Tags: Illinois, Indiana, Iowa, Kansas, Kentucky, All tags... Michigan, Midwest United States, Minnesota, Missouri, Nebraska, Ohio, South Dakota, Wisconsin, adult emergence, aquatic insect communities, aquatic-terrestrial linkages, bifenthrin, contaminants, mesocosm, pesticides, sediment quality, suspended sediment, trophic cascade, water quality, Fewer tags Final Bulk Sediment Concentrations of Bifenthrin from Mesocosms 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... Categories: Data; Types: Citation; Tags: Illinois, Indiana, Iowa, Kansas, Kentucky, All tags... Michigan, Midwest United States, Minnesota, Missouri, Nebraska, Ohio, South Dakota, Wisconsin, adult emergence, aquatic insect communities, aquatic-terrestrial linkages, bifenthrin, contaminants, mesocosm, pesticides, sediment quality, suspended sediment, trophic cascade, water quality, Fewer tags Chlorophyll-a Data From Mesocosms Exposed to Bifenthrin 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... Categories: Data; Types: Citation; Tags: Illinois, Indiana, Iowa, Kansas, Kentucky, All tags... Michigan, Midwest United States, Minnesota, Missouri, Nebraska, Ohio, South Dakota, Wisconsin, adult emergence, aquatic insect communities, aquatic-terrestrial linkages, bifenthrin, contaminants, mesocosm, pesticides, sediment quality, suspended sediment, trophic cascade, water quality, Fewer tags Bifenthrin Concentration, Percent Organic Matter, and Toxic Units, for Stream Sites Collected as Part of the Midwest Stream Quality Assessment 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... Categories: Data; Types: Citation; Tags: Illinois, Indiana, Iowa, Kansas, Kentucky, All tags... Michigan, Midwest United States, Minnesota, Missouri, Nebraska, Ohio, South Dakota, Wisconsin, adult emergence, aquatic insect communities, aquatic-terrestrial linkages, bifenthrin, contaminants, mesocosm, pesticides, sediment quality, suspended sediment, trophic cascade, water quality, Fewer tags Adult Aquatic Insects that Emerged from Mesocosms Exposed to Bifenthrin 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... Categories: Data; Types: Citation; Tags: Illinois, Indiana, Iowa, Kansas, Kentucky, All tags... Michigan, Midwest United States, Minnesota, Missouri, Nebraska, Ohio, South Dakota, Wisconsin, adult emergence, aquatic insect communities, aquatic-terrestrial linkages, bifenthrin, contaminants, mesocosm, pesticides, sediment quality, suspended sediment, trophic cascade, water quality, Fewer tags Aquatic insect community data and taxa list for larvae collected from mesocosms exposed to bifenthrin 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... Categories: Data; Types: Citation; Tags: Illinois, Indiana, Iowa, Kansas, Kentucky, All tags... Michigan, Midwest, Minnesota, Missouri, Nebraska, Ohio, South Dakota, Wisconsin, adult emergence, aquatic insect communities, aquatic-terrestrial linkages, bifenthrin, contaminants, mesocosm, pesticides, sediment quality, suspended sediment, trophic cascade, water quality, Fewer tags