||Comparison of the Relative Sensitivity of Three Benthic Invertebrates to Copper-Contaminated Sediments from the Keweenaw Waterway.
West, C. W. ;
Mattson, V. R. ;
Leonard, E. N. ;
Phipps, G. L. ;
Ankley, G. T. ;
||Environmental Research Lab.-Duluth, MN.
Water pollution effects(Animals) ;
Benthic fauna ;
Soil contamination effects ;
Physicochemical properties ;
Hyallela azteca ;
Chironomus tentans ;
Lumbriculus variegatus ;
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
||The Keweenaw Peninsula in northern Michigan was once a major copper mining area and these mining acivities were responsible for depositing tons of tailings in and around the Keweenaw Waterway. In the fall of 1990, sediments were collected from various locations along the Waterway. Ten-day tests were conducted with the samples using three species of benthic invertebrates that have been proposed as suitable for evaluating the toxicity of freshwater sediments: Hyalella azteca (amphipods), Chironomus tentans (chironomids) and Lumbriculus variengatus (oligochaetes). A number of sediments were toxic to one or more of the three species and, in general, there was good agreement among the tests with regard to identifying toxic samples. Unexpectedly, the relative sensitivity of the three species to the test sediments was not accurately predicted from water-only copper exposures. This indicates that factors modifying exposure, such as different lifestyles and/or varying sensitivity to physico-chemical characteristics of sediments can influence results of sediment toxicity tests. (Copyright (c) 1993 Kluwer Academic Publishers.)
||Pub. in Hydrobiologia 262, p57-63, 1993. See also PB85-124626.
|NTIS Title Notes
||Reprint: Comparison of the Relative Sensitivity of Three Benthic Invertebrates to Copper-Contaminated Sediments from the Keweenaw Waterway.
||57Y; 68D; 68C
||PC A02/MF A01