Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Radiotracer Studies of Interactions between Sediments and Freshwater Macrobenthos.
Author Krezoski, J. R. ; Robbins, J. A. ;
CORP Author Michigan Univ., Ann Arbor. Great Lakes Research Div.;Environmental Research Lab.-Duluth, MN.
Year Published 1981
Report Number EPA-R-804686; EPA-600/J-81-666;
Stock Number PB84-124189
Additional Subjects Sediments ; Benthos ; Water pollution ; Solutes ; Particles ; Diffusion ; Fresh water ; Transport properties ; Invertebrates ; Reprints ; Tracer studies ; Path of pollutants
Library Call Number Additional Info Location Last
NTIS  PB84-124189 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/23/1988
Collation 4p
Gamma-emitting radioiosotopes were used to study the effect of five species of benthic macrofauna, common to the North American Great Lakes, on the movement of solutes and particles in sediments. In a special control cell with worm tubes but no live worms, there was no enhancement of the rate of solute transport. Thus, the presence of either species markedly enhances the transport of solutes into sediments (about 50%) and in the case of oligochaetes the effect is primarily due to their dynamic interactions with the sediments rather than to alterations in the sediment matrix. In other cells with Chironomus tentans (4.0 x 4000/sqm m-2), Pisidium sp. (4.0 x 10 3 4000/sqm) and Sphaerium sp. (2700/sq m ) no significant movement of labeled particles occurred.