Record Display for the EPA National Library Catalog

RECORD NUMBER: 458 OF 635

OLS Field Name OLS Field Data
Main Title Recent Sulfur Enrichment in the Sediments of Little Rock Lake, Wisconsin.
Author Baker, L. A. ; Engestrom, D. R. ; Brezonik, P. L. ;
CORP Author Minnesota Univ., St. Paul. Water Resources Research Center. ;Minnesota Univ., Minneapolis.;Corvallis Environmental Research Lab., OR.
Publisher c1992
Year Published 1992
Report Number EPA/600/J-92/415;
Stock Number PB93-135721
Additional Subjects Acidification ; Little Rock Lake ; Sediments ; pH ; Sampling ; Fishes ; Aquatic plants ; Chemical properties ; Sulfur ; Sulfates ; Accumulation ; Zooplankton ; Diagenesis ;
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
NTIS  PB93-135721 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/12/1993
Collation 16p
Abstract
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.