Record Display for the EPA National Library CatalogRECORD NUMBER: 6 OF 24
|Main Title||Comparison of the Effects of Drilling Fluid on Macrobenthic Invertebrates Associated with the Seagrass, 'Thalassia testudinum', in the Laboratory and Field.|
|Author||Weber, D. E. ; Flemer, D. A. ; Bundick, C. M. ;|
|CORP Author||Environmental Research Lab., Gulf Breeze, FL. ;University of West Florida, Pensacola. Dept. of Statistics.|
|Report Number||EPA/600/J-92/408 ;CONTRIB-753;|
|Additional Subjects||Offshore drilling ; Water pollution effects(Animals) ; Marine animals ; Benthos ; Drilling fluids ; Santa Rosa Sound ; Sea grasses ; Experimental design ; Field tests ; Exposure ; Aquatic ecosystems ; Biological effects ; Biological communities ; Florida ; Comparison ; Reprints ; Thalassia testudinum|
The structure of a macrobenthic invertebrate community associated with the seagrass, Thalassia testudinum, was evaluated under laboratory and field conditions. The research focused on: (1) the effects of pollution stress from a representative drilling fluid used in offshore oil and gas operations, and (2) a comparison of responses of the seagrass-invertebrate community in the laboratory and field. The numbers of macrobenthic invertebrates were suppressed by drilling fluid at both exposure periods in the laboratory, but inhibitory effects were absent in the field. Invertebrate densities in the field were similar among control and treated plots, and were much lower than densities occurring in the laboratory control. In most instances, species richness values were similar in the field and laboratory at the end of each 6 and 12 week period.