Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Effect of Barite on Meiofauna in a Flow-Through Experimental System.
Author Cantelmo, Frank R. ; Tagatz, M. E. ; Rao, K. Ranga ;
CORP Author University of West Florida, Pensacola.;Environmental Research Lab., Gulf Breeze, FL.
Year Published 1980
Report Number EPA-600/J-79-118 ; ERL.GB-J108
Stock Number PB81-165151
Additional Subjects Barite ; Marine biology ; Water pollution ; Offshore drilling ; Drilling fluids ; Abundance ; Toxicity ; Nematoda ; Foraminifera ; Marine microorganisms ; Reprints ; Water pollution effects(Animals)
Library Call Number Additional Info Location Last
NTIS  PB81-165151 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/23/1988
Collation 12p
The effects of barite (BaSO4), a major constituent of drilling muds used in marine oil drilling operations, on meiofauna were studied in an experimental flow-through system. Aquaria containing sand or varying proportions of barite and sand received a continuous supply of unfiltered seawater from Santa Rosa Sound, Florida, for ten weeks. At the end of this period the composition, biomass and vertical distribution of the meiofauna were determined. Rotifera, Foraminifera, Hydrozoa, Turbellaria, Ostracoda, Polychaeta and Bivalvia did not exhibit significant differences between control and experimental aquaria. A marked decrease in meiofaunal density was evident in aquaria containing 5.5 cm of sand covered with a 0.5 cm layer of barite.