||Effects of Oil and Gas Well-Drilling Fluids on the Biomass and Community Structure of Microbiota that Colonize Sands in Running Seawater.
Smith, Glen A. ;
Nickels, Janet S. ;
Bobbie, Ronald J. ;
Richards, Norman L. ;
White, David C. ;
||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.
||EPA-R-806143 ;NSF-OCE76-19671; EPA-600/J-82-325;
Drilling fluids ;
Water pollution effects(Animals)
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
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.