Determination of the toxicity, water-quality interactions, and biomagnification of selenium in aquatic food chains. Technical report for 15 August 1987-14 August 1989 (Final)
Ecological degradation of aquatic ecosystems associated with the presence of elevated concentrations of the trace element selenium has been of considerable scientific, governmental, and public concern. The increased flux of selenium into several aquatic ecosystems, due to anthropogenic activities, has resulted in death, teratogenesis, reproductive impairment and decreased populations in fish and waterfowl communities in the systems. Research is continuing on several investigations into the toxicity, bioaccumulation, transfer, and biotransformation of selenium in aquatic organisms and laboratory food chains. Initial studies were primarily concerned with the comparative acute and chronic toxicity, water-quality interactions, and toxicological interactions of several chemical species of selenium to a variety of aquatic organisms. Further research was directed towards the biotransformation, transfer, and subsequent bioaccumulation of selenium in simplified laboratory aquatic food chains. Studies on the transfer, bioaccumulation, and toxicity of selenium from dietary sources to consumers were conducted. The development of methodology for determining and quantifying the biochemical speciation of selenium in aquatic organisms was initiated.
- Research Organization:
- California Univ., Davis, CA (USA). Dept. of Land, Air, and Water Resources
- OSTI ID:
- 7255606
- Report Number(s):
- PB-90-132648/XAB
- Country of Publication:
- United States
- Language:
- English
Similar Records
Biological consequences of selenium in aquatic ecosystem
Assessing the toxic threat of selenium to fish and aquatic birds
Related Subjects
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
AQUATIC ECOSYSTEMS
FOOD CHAINS
TOXIC MATERIALS
SELENIUM
ENVIRONMENTAL IMPACTS
BIOLOGICAL ACCUMULATION
CHEMICAL PROPERTIES
ELEMENTS
PROGRESS REPORT
SEAS
SURFACE WATERS
TOXICITY
TRACE AMOUNTS
WATER POLLUTION
WATER QUALITY
DOCUMENT TYPES
ECOSYSTEMS
ENVIRONMENTAL QUALITY
MATERIALS
POLLUTION
SEMIMETALS
540320* - Environment
Aquatic- Chemicals Monitoring & Transport- (1990-)
560300 - Chemicals Metabolism & Toxicology