Record Display for the EPA National Library Catalog
RECORD NUMBER: 3 OF 4
|OLS Field Name||OLS Field Data|
|Main Title||Comparison of Mixed Flask Culture and Standardized Laboratory Model Ecosystems for Toxicity Tests.|
|Author||Shannon, L. J. ; Harrass, M. C. ; Yount, J. D. ; Walbridge, C. T. ;|
|CORP Author||Environmental Research Lab.-Duluth, MN. ;Minnesota Univ.-Duluth.|
|Additional Subjects||Toxicity ; Aquatic biology ; Copper sulfate ; Water pollution ; Tests ; Culture media ; Respiration ; Comparison ; Density(Mass/volume) ; Populations ; Ecosystems ; Microcosms ; SAM method|
Two microecosystem protocols, the Standardized Aquatic Microcosm (SAM) method developed by Dr. Frieda Taub and associates (1982) and the Mixed Flask Culture (MFC) method of Dr. John Leffler (1981), were compared on the basis of their response to copper sulfate. These protocols differed in microcosm structure, age, and the variables monitored. Although responses were similar with both systems, the SAM procedure provided considerably more insight into the changes in population densities and nutrient cycling responsible for the observed ecosystem level changes. The SAM protocol was much more labor intensive and required about six times more laboratory effort than did the MFC protocol.