Impacts of the Pyrethroid Insecticide Cyfluthrin on Aquatic Invertibrate Populations in Outdoor Experimental Tanks

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Description

The chemical fate and biological impacts of cyfluthrin in aquatic ecosystems were investigated using microcosms (1.9 m^3 concrete tanks) during 1989. Results were compared to a concurrent pesticide registration study using mesocosms (634.7 m^3 earthen ponds). Ten spray drift and five soil runoff simulations were conducted. Pesticide loadings were scaled by system volume, with the same experimental design in ponds and microcosms. Aqueous cyfluthrin concentrations and sediment residue values were generally higher in microcosms, while aqueous half-life was shorter in the smaller systems.

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xxiii, 308 leaves : ill.

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Johnson, Philip C. (Philip Charles) May 1992.

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  • Johnson, Philip C. (Philip Charles)

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Description

The chemical fate and biological impacts of cyfluthrin in aquatic ecosystems were investigated using microcosms (1.9 m^3 concrete tanks) during 1989. Results were compared to a concurrent pesticide registration study using mesocosms (634.7 m^3 earthen ponds). Ten spray drift and five soil runoff simulations were conducted. Pesticide loadings were scaled by system volume, with the same experimental design in ponds and microcosms. Aqueous cyfluthrin concentrations and sediment residue values were generally higher in microcosms, while aqueous half-life was shorter in the smaller systems.

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xxiii, 308 leaves : ill.

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UNT Theses and Dissertations

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  • May 1992

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  • March 26, 2014, 9:30 a.m.

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  • Oct. 10, 2014, 2:45 p.m.

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Citations, Rights, Re-Use

Johnson, Philip C. (Philip Charles). Impacts of the Pyrethroid Insecticide Cyfluthrin on Aquatic Invertibrate Populations in Outdoor Experimental Tanks, dissertation, May 1992; Denton, Texas. (digital.library.unt.edu/ark:/67531/metadc279350/: accessed April 19, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; .