||Toxicity of Sediments from Western Lake Erie and the Maumee River at Toledo, Ohio, 1987: Implications for Current Dredged Material Disposal Practices.
Hoke, R. A.;
Giesy, J. P.;
Ankley, G. T.;
Newsted, J. L.;
Adams, J. R.;
||Environmental Research Lab.-Duluth, MN. ;Michigan State Univ., East Lansing. ;Corps of Engineers, Buffalo, NY. Buffalo District.
Water pollution effects(Animals);
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
||The toxicity of sediments in the Maumee River, the Maumee River-western Lake Erie federal navigation channel, and selected areas of western Lake Erie was measured using four assays: Photobacterium phosphoreum 15-minute bioluminescence inhibition (Microtox) in sediment porewaters and elutriates; Ceriodaphnia dubia 7-day survival and reproduction; Pimephales promelas 7-day larval survival and growth in sediment elutriates; and Chironomus tentans 10-day growth inhibition in whole sediments. The Microtox assay generally was the most sensitive of the four assays used in the investigation. Sediment elutriates were always equally or more toxic than porewaters from the same location when tested using the Microtox assay. The greatest toxicity in the Microtox and C. tentans assays was observed with porewaters or elutriates and sediments collected near point sources of contaminants to the Maumee River. Very little toxicity was observed in any assay using open-lake navigation channel or disposal site sediments or sediment extracts. Previous investigations also have reported little acute toxicity and little or no bioaccumulation of any measured sediment contaminants from study area sediments during laboratory toxicity or bioaccumulation assays. Sediments from the Lake Erie portion of the navigation channel evaluated during the investigation were suitable for open-lake disposal based on the lack of observed effects in the four assays.
||Pub. in Jnl. of Great Lakes Research 16, n3 p457-470 1990. Prepared in cooperation with Michigan State Univ., East Lansing, and Corps of Engineers, Buffalo, NY. Buffalo District.
|NTIS Title Notes
||Reprint: Toxicity of Sediments from Western Lake Erie and the Maumee River at Toledo, Ohio, 1987: Implications for Current Dredged Material Disposal Practices.
||68D; 57Y; 57H
||PC A03/MF A01