Record Display for the EPA National Library Catalog


Main Title Effects of Oil and Gas Well-Drilling Fluids on the Biomass and Community Structure of Microbiota that Colonize Sands in Running Seawater.
Author Smith, Glen A. ; Nickels, Janet S. ; Bobbie, Ronald J. ; Richards, Norman L. ; White, David C. ;
CORP Author Florida State Univ., Tallahassee.;Environmental Research Lab., Gulf Breeze, FL.;National Science Foundation, Washington, DC.;National Oceanic and Atmospheric Administration, Rockville, MD. Office of Sea Grant.
Year Published 1982
Report Number EPA-R-806143 ;NSF-OCE76-19671; EPA-600/J-82-325;
Stock Number PB83-223602
Additional Subjects Drilling fluids ; Toxicology ; Barite ; Clay ; Biomass ; Microorganisms ; Bacteria ; Reprints ; Water pollution effects(Animals)
Library Call Number Additional Info Location Last
NTIS  PB83-223602 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 9p
Well-drilling fluid and a number of the known components (barite, clay, Aldacide, Surflo, and Dowicide, were tested for effects on the biomass and community structure of the microbiota that colonize marine sands exposed for eight weeks to running ambient seawater. Shading the microbiota from light depressed the microflora without a significant effect on the biomass, while well-drilling fluids layered on the surface or mixed with the sand significantly increased a component of the bacteria and the microfauna as reflected in changes in the fatty acid composition. There were some shading effects from the surface layering of well-drilling fluids as reflected in the fatty acids from the microflora when compared to the sands mixed with well-drilling fluids.