Record Display for the EPA National Library Catalog
RECORD NUMBER: 1022 OF 1222Main Title | Structure and Function of Copper-Stressed Aquatic Microcosms. | |||||||||||
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Author | Hedtke, S. F. ; | |||||||||||
CORP Author | Environmental Research Lab.-Duluth, Monticello, MN. Monticello Ecological Research Station. | |||||||||||
Year Published | 1984 | |||||||||||
Report Number | EPA/600/J-84/107; | |||||||||||
Stock Number | PB85-106326 | |||||||||||
Additional Subjects | Toxicity ; Copper ; Aquatic biology ; Water pollution ; Test facilities ; Sediments ; Carbon ; Organic compounds ; Exposure ; Photosynthesis ; Respiration ; Decomposition ; Adaptation ; Tolerances(Physiology) ; Invertebrates ; Insects ; Zooplankton ; Algae ; Analysis of variance ; Primary biological productivity ; Reprints ; Microcosms | |||||||||||
Holdings |
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Collation | 20p | |||||||||||
Abstract | Laboratory aquatic microcosms were established using natural pond sediment and the organisms contained therein. After a 30-day development time, microcosms were exposed on a flow-through basis to six concentrations of copper with six replicates of each concentration. Measures of energy fixation, material cycling, and biological structure were measured periodically over a 32-wk period. Exposure to copper at 9.3 microgram/l and higher resulted in a change in the structure and function of the test systems while 4.0 microgram/l did not cause an effect relative to controls. |