Environmental effects of dredging. Use of daphnia magna to predict consequences of bioaccumulation
Results reported herein represent a portion of the laboratory research evaluating the relationship between mercury and cadmium tissue residues and biological effects in the freshwater crustacean, Daphnia magna (commonly known as the water flea). Procedures presented here for a 28-day Daphnia magna toxicity test could be used in screening for water-column toxicity resulting from open-water disposal of a specific dredged material. As a part of its regulatory and dredging programs, the U. S. Army Corps of Engineers often conducts, or requires to be conducted, an assessment of the potential for bioaccumulation of environmental contaminants from sediment scheduled for dredging and open-water disposal. There is, at present, no generally accepted guidance available to aid in the interpretation of the biological consequences of bioaccumulation. To provide an initial basis for such guidance, the Environmental Laboratory is conducting both literature database analyses and experimental laboratory studies as part of the Long-Term Effects of Dredging Operations (LEDO) Program.
- Research Organization:
- Army Engineer Waterways Experiment Station, Vicksburg, MS (United States). Environmental Lab.
- OSTI ID:
- 111783
- Report Number(s):
- AD-A--292599/8/XAB; EEDP--01-7
- Country of Publication:
- United States
- Language:
- English
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