Record Display for the EPA National Library Catalog


Main Title Effects of a Lignosulfonate-Type Drilling Mud on Development of Experimental Estuarine Macrobenthic Communities.
Author Tagatz, M. E. ; Ivey, J. M. ; Lehman, H. K. ; Oglesby, J. L. ;
CORP Author Environmental Research Lab., Gulf Breeze, FL. ;University of West Florida, Pensacola. Faculty of Mathematics and Statistics.
Year Published 1978
Report Number EPA/600/J-78/069 ;CONTRIB-370;
Stock Number PB-290 040
Additional Subjects Toxicology ; Drilling fluids ; Benthos ; Estuaries ; Animal ecology ; Offshore drilling ; Larvae ; Annelida ; Mollusca ; Arthropoda ; Coelenterata ; Exposure ; Lignin ; Sulfonates ; Abundance ; Distribution(Property) ; Tests ; Water pollution ; Experimental data ; Bioassay ; Concentration(Composition) ; Toxic substances ; Reprints ; Water pollution effects(Animals)
Library Call Number Additional Info Location Last
NTIS  PB-290 040 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 10p
Drilling mud, as used in exploratory drilling for oil offshore, affected the composition of estuarine communities that developed from planktonic larvae in aquaria containing sand and flowing estuarine water. Aquaria contained: sand only; a mixture (by volume) of 1 part mud and 10 parts sand; 1 part mud and 5 parts sand; or sand covered by 0.2 cm mud. For all environments, annelids, mollusks, arthropods, and coelenterates were the numerically dominant phyla collected in a 1 mm mesh sieve after eight weeks exposure; a total of 1,025 animals, representing 45 species, was collected. Annelids and coelenterates were significantly fewer in aquaria containing drilling mud than in the control aquaria. Arthropods were significantly affected only by mud cover over sand; mollusks also were diminished in this environment, but not significantly. Exposure to concentrations of drilling mud reduced not only the number of individuals, but also the frequency of occurrence of macrobenthic species.