Record Display for the EPA National Library Catalog


Main Title Littoral Enclosures for Aquatic Field Testing of Pesticides. The Effects of Chlorpyrifos on a Natural System.
Author Siefert, R. E. ; Lozano, S. J. ; Brazner, J. C. ; Knuth., M. L. ;
CORP Author Environmental Research Lab.-Duluth, MN. ;Wisconsin Univ.-Superior. Center for Lake Superior Environmental Studies.
Publisher c1989
Year Published 1989
Report Number EPA/600/J-89/388;
Stock Number PB90-246059
Additional Subjects Pesticides ; Ecology ; Fresh water fishes ; Body weight ; Plants(Botany) ; Mortality ; Chemical reactions ; Algae ; Invertebrates ; Reprints ; Chlorpyrifos ; Water pollution effects(Animals) ; Pimephales promelas ; Lepomis macrochirus ; Littoral enclosures
Library Call Number Additional Info Location Last
NTIS  PB90-246059 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 19p
A littoral enclosure protocol designed for aquatic field testing of pesticides is described. The enclosures are replicated, relatively economical, and incorporate all trophic levels, the natural shoreline, and undisturbed bottom sediments. The results of using the protocol to study the environmental chemistry of chlorpyrifos and the effects of chlorpyrifos on the biota in the enclosures are discussed. Chlorpyrifos degradation curves within treatment levels are similar; there was a rapid decline in concentration 1 h after treatment and a slower-than-expected vertical mixing rate occurred. Invertebrate population responses to chlorpyrifos application were generally more severe than would be expected based on laboratory LC30 information. Fathead minnow (Pimephales promelas) and bluegill (Lepomis macrochirus) mortality were similar to predictions based on laboratory data. (Copyright (c) 1989 Entomological Society of America).