David K DeForest
Affiliation: Parametrix Inc
- What is an appropriate level of protection? An example considering selenium exposures by aquatic birdsDavid K DeForest
Parametrix, Bellevue, WA, USA
Integr Environ Assess Manag 4:513-5. 2008..A determination as to whether higher EC values would also provide an adequate level of protection could be made by appropriate population modeling...
- Assessing metal bioaccumulation in aquatic environments: the inverse relationship between bioaccumulation factors, trophic transfer factors and exposure concentrationDavid K DeForest
Parametrix, Inc, 411 108th Avenue NE, Suite 1800, Bellevue, WA 98004, USA
Aquat Toxicol 84:236-46. 2007..Data presented indicate that for metals and metalloids, unlike organic substances, no one BAF or TTF can be used to express bioaccumulation and/or trophic transfer without consideration of the exposure concentration...
- Acute and chronic toxicity of nickel to a cladoceran (Ceriodaphnia dubia) and an amphipod (Hyalella azteca)James Keithly
Parametrix, 5808 Lake Washington Boulevard Northeast, Suite 200, Kirkland, Washington 98033, USA
Environ Toxicol Chem 23:691-6. 2004..Survival was more sensitive than was growth in the chronic study with H. azteca. The 20% lethal accumulation effect level based on measured Ni body burdens was 247 nmol/g wet weight...
- Inverse relationship between bioconcentration factor and exposure concentration for metals: implications for hazard assessment of metals in the aquatic environmentJames C McGeer
Environment Group, Mining and Mineral Sciences Laboratories, Natural Resources Canada, 555 Booth Street, Ottawa, Ontario K1A 0G1, Canada
Environ Toxicol Chem 22:1017-37. 2003..A bioaccumulation criterion for the hazard identification of metals is required, and work directed at linking chronic toxicity and bioaccumulation may provide some solutions...
- Setting site-specific water-quality standards by using tissue residue criteria and bioaccumulation data. Part 1. MethodologyJohn E Toll
Toll Environmental, Seattle, Washington 98105, USA
Environ Toxicol Chem 24:224-30. 2005..A companion paper demonstrates the method by using selenium as an example...
- Setting site-specific water-quality standards by using tissue residue thresholds and bioaccumulation data. Part 2. Calculating site-specific selenium water-quality standards for protecting fish and birdsKevin V Brix
EcoTox, Coral Gables, Florida 33134, USA
Environ Toxicol Chem 24:231-7. 2005..The models also were shown to be sensitive to variability in measured tissue residues with relatively small changes in variability (as characterized by the standard error) resulting in relatively large differences in SSWQSs...
- Analysis of field and laboratory data to derive selenium toxicity thresholds for birdsWilliam J Adams
Kennecott Utah Copper Corporation, 8315 West 3595 South, P O Box 6001, Magna, Utah 84044, USA
Environ Toxicol Chem 22:2020-9. 2003..75-0.90)...
- Derivation of a chronic site-specific water quality standard for selenium in the Great Salt Lake, Utah, USAKevin V Brix
EcoTox, 721 Navarre Avenue, Coral Gables, Florida 33134, USA
Environ Toxicol Chem 23:606-12. 2004..Consequently, protection of aquatic birds represents the driving factor in determining a site-specific water quality standard for selenium...