Record Display for the EPA National Library Catalog

RECORD NUMBER: 202 OF 231

Main Title Structure and Function of Copper-Stressed Aquatic Microcosms.
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
Library Call Number Additional Info Location Last
Modified		 Checkout
Status
NTIS  PB85-106326 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
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.