Accession Number : ADA292599

Title :   Environmental Effects of Dredging. Use of Daphnia Magna to Predict Consequences of Bioaccumulation.

Corporate Author : ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS ENVIRONMENTAL LAB

PDF Url : ADA292599

Report Date : MAR 1987

Pagination or Media Count : 13

Abstract : 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. pg1. JMD

Descriptors :   *TOXICITY, *ENVIRONMENTAL IMPACT, *WATER POLLUTION, *CONTAMINATION, *DREDGING, DATA BASES, EXPERIMENTAL DATA, LABORATORY TESTS, ENVIRONMENTS, LONG RANGE(TIME), FRESH WATER, DOCUMENTS, MERCURY, ARMY CORPS OF ENGINEERS, LABORATORIES, RESPONSE(BIOLOGY), DISPOSAL, DREDGED MATERIALS, OPEN WATER, DAPHNIA, SIPHONAPTERA.

Subject Categories : Toxicology
      Water Pollution and Control
      Civil Engineering

Distribution Statement : APPROVED FOR PUBLIC RELEASE