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 | Liber, Karsten
|
Academic Degrees
B.Sc., Ph.D. (Guelph)Current Teaching
TOX 321.3 Risk Assessment and Regulatory Toxicology
Current and Recent Research Projects
Toxicity of uranium to aquatic organisms, including toxicity to native species, significance of life stage and water quality characteristics, and routes and mechanisms of uptake.
Distribution, speciation and bioavailability of selenium in northern aquatic ecosystems.
Investigation of cause of benthic invertebrate community impairment at Canadian mine sites.
Alternative approaches to the derivation of sediment quality guidelines.
Assessment of leaching of toxic constituents from oil sands coke and associated implications for use of coke in aquatic reclamation landscapes.
Assessment of industrial impacts on aquatic ecosystems, including Investigations-of-Cause.
Publications
Selected Publications
Franz, E.D., C.I.E. Wiramanaden, D.M. Janz, I.J. Pickering and K. Liber. 2011. Selenium bioaccumulation and speciation in Chironomus dilutus exposed to water-borne selenate, selenite, or seleno-DL-methionine. Environ. Toxicol. Chem 30: 2292-2299.
Puttaswamy, N. and K. Liber. 2011. Identifying the causes of oil sands coke leachate toxicity to aquiatic invertebrates. Environ. Toxicol. Chem. 30: 2576-2585.
Liber, K., L.E. Doig and S.L White-Sobey. 2011. Toxicity of uranium, molybdenum, nickel, and arsenic to Hyalella azteca and Chironmonus dilutus in water-only and spiked-sediment toxicity tests. Exotoxicol. Environ. Safety 74: 1171-1179
Wiramanaden, C.I.E., K. Liber and I.J. Pickering. 2010. Selenium speciation in whole-sediment using X-ray absorption spectroscopy and micro X-ray fluorescence imaging. Environ. Sci. Technol. 44: 5389-5394.
Puttaswamy, N. and K. Liber. 2010. Variation in toxicity response of Ceriodaphnia dubia to Athabasca oil sands coke leachates. Chemosphere. 80: 489-497.
Wiramanaden, C.I.E., E. Forster and K. Liber. 2010. Selenium distribution in a lake system receiving effluent from a metal mine and milling operation in northern Saskatchewan, Canada. Environ. Toxicol. Chem. 29: 1-11.
Muscatello, J.R. and K. Liber. 2009. Accumulation and chronic toxicity of uranium over different life stages of the aquatic invertebrate Chironomus tentans. Arch. Environ. Contam. Toxicol. 57:531-539.
Robertson, E. and K. Liber. 2009. Effect of sampling method on contaminant measurement in pore-water and surface water at two uranium operations: can method affect conclusions? Environ. Monit. Assess. 155:539-553.
deRosemond, S., Q. Xie and K. Liber. 2008. Arsenic concentration and speciation in five freshwater fish species from Back Bay near Yellowknife, NT, Canada. Environ. Monit. Assess. 147: 199-210.
Robertson, E. and K. Liber. 2007. Bioassays with caged Hyalella azteca to determine aquatic toxicity downstream of two Saskatchewan, Canada, uranium operations. Environ. Toxicol. Chem. 26: 2345-2355.
Liber, K., W. Goodfellow, P. den Besten, W. Clements, T. Galloway, A. Gerhardt, A. Green, and S. Simpson. 2007. In-situ-based effects measures: Consideration for improving methods and approaches. Integr. Environ. Assess. Manage. 3: 246-258.
Doig, L.E. and K. Liber. 2006. Influence of dissolved organic matter on nickel bioavailability and toxicity to Hyalella azteca in water-only exposures. Aquat. Toxicol. 76: 203-216.
de Rosemond, S.J.C. and K. Liber. 2004. Wastewater treatment polymers identified as the toxic component of a diamond mine effluent. Environ. Toxicol. Chem. 23: 2234-2242.
