||Cesium: Potassium Index of Food Web Structure and Biomagnification of Trace Elements in a Polluted Harbor of Southern California.
Young, D. R. ;
Mearns, A. J. ;
Jan, T. K. ;
||Environmental Research Lab.-Narragansett, Newport, OR. Mark O. Hatfield Marine Science Center. ;National Oceanic and Atmospheric Administration, Seattle, WA. ;Los Angeles Hyperion Treatment Plant, Playa Del Rey, CA.;University of Southern California, Los Angeles. Sea Grant Program.
Food chains ;
Marine biology ;
Water pollution ;
Trace elements ;
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
||A biological technique of quantifying trophic position in marine food webs, and a chemical technique of quantifying 'structure' in feeding relationships and resultant biomagnification potential, were applied to a polluted harbor ecosystem. The chemical index (cesium:potassium ratio) indicated that the food web sampled had a relatively high degree of structure. Nevertheless, of eleven trace elements measured, only mercury tissue concentrations systematically increased with trophic level. This result is consistent with the hypothesis that most pollutant trace elements do not biomagnify in marine food webs.
||Pub. in Heavy Metals in the Environment, v2 p74-76 1987. Prepared in cooperation with National Oceanic and Atmospheric Administration, Seattle, WA., and Los Angeles Hyperion Treatment Plant, Playa Del Rey, CA. Sponsored by University of Southern California, Los Angeles. Sea Grant Program.
|NTIS Title Notes
||PC A02/MF A01