||Recent Sulfur Enrichment in the Sediments of Little Rock Lake, Wisconsin.
Baker, L. A. ;
Engestrom, D. R. ;
Brezonik, P. L. ;
||Minnesota Univ., St. Paul. Water Resources Research Center. ;Minnesota Univ., Minneapolis.;Corvallis Environmental Research Lab., OR.
Little Rock Lake ;
Aquatic plants ;
Chemical properties ;
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
||Multiple sediment cores collected from Little Rock Lake, Wisconsin, prior to experimental acidification show that total sulfur accumulation rates increased during the past century, with most of the increase occurring in the chromium-reducible (CRS) and organic fractions. The increased sulfur accumulation is a result of diagenetic processes within the sediments, rather than changes in seston deposition rates or terrestrial inputs. The enrichment has occurred because atmospheric sulfate deposition rates have increased over the past century, resulting in increased lakewater sulfate concentrations. This has increased the diffusional flux to the sediments and increased the extent of diagenetic immobilization. Individual cores had markedly different sulfur accumulation rates, demonstrating the importance of collecting multiple cores to determine lakewide sediment flux.
||Pub. in Limnology and Oceanography, v37 n4 p689-702 1992. See also PB87-179966. Prepared in cooperation with Minnesota Univ., Minneapolis. Sponsored by Corvallis Environmental Research Lab., OR.
|NTIS Title Notes
||PC A03/MF A01