Record Display for the EPA National Library Catalog


Main Title Responses of Macrobenthos Colonizing Estuarine Sediments Contaminated with Drilling Mud Containing Diesel Oil.
Author Tagatz, M. E. ; Plaia, G. R. ; Deans, C. H. ;
CORP Author Environmental Research Lab., Gulf Breeze, FL.
Year Published 1985
Report Number EPA/600/J-85/125;
Stock Number PB86-100294
Additional Subjects Benthos ; Diesel fuels ; Drilling fluids ; Water pollution ; Santa Rosa Sound ; Barite ; Fuel oil ; Mixtures ; Calcium oxides ; Mud ; Sands ; Toxicity ; Reprints ; Water pollution effects(Animals) ; Species diversity
Library Call Number Additional Info Location Last
NTIS  PB86-100294 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 11p
Boxes filled with clean sand or clean sand with a 2-cm overlay of mixtures of sand with barite or drilling mud were placed in Santa Rosa Sound, Florida to determine the effects of a used lime drilling-mud on field-colonized macrobenthic communities. Effect of the drilling mud on community structure was greater than that of its barite component after colonization for 8 weeks. Barite causes changes in texture of the sediment and thereby recruitment. The average numbers of animals and species in boxes containing 1:10 and 1:3 mixtures of mud to sand were significantly less than those in control boxes and most of the barite/sand mixtures. The Shannon-Weaver index of diversity, Simpson's index of dominance, and the Bray-Curtis dissimilarity index differed only for 1:3 mud/sand communities. Toxic effects of the lime drilling mud were attributed to a diesel fuel oil component.