Zobrazeno 1 - 10
of 29
pro vyhledávání: '"W. Lyle Lockhart"'
Autor:
Derek C. G. Muir, Peter M. Outridge, Jules M. Blais, Timothy J. Veverica, William F. Fitzgerald, Colin A. Cooke, Ana Carolina Ruiz-Fernández, Kenneth H. Coale, John E. Gray, Chad V. Furl, Sarah E. Rothenberg, W. Lyle Lockhart, Collin A. Eagles-Smith, Vincent L. St. Louis, Peter C. Van Metre, Kathleen R. Laird, Brian F. Cumming, Daniella Barraza, Hamed Sanei, Scott A. Reinemann, E.K. Skierszkan, M. Alisa Mast, Biplob Das, William F. Donahue, Robie W. Macdonald, Togwell A. Jackson, Chris J. Curtis, Callie A. Mathieu, Johan A. Wiklund, Daniel R. Engstrom, Paul E. Drevnick, Roland I. Hall, Rhea D. Sanders, Brent B. Wolfe
Publikováno v:
Science of The Total Environment. 568:1157-1170
For the Western North America Mercury Synthesis, we compiled mercury records from 165 dated sediment cores from 138 natural lakes across western North America. Lake sediments are accepted as faithful recorders of historical mercury accumulation rates
Publikováno v:
Science of The Total Environment. :94-147
Over 1999-2002, an extensive series of contaminant studies was conducted on freshwater biota of Canada's Arctic and Subarctic regions. The majority of inorganic contaminant studies focused on mercury and fish. While mercury concentrations were low in
Autor:
W. Lyle Lockhart, Daniel Martineau, Suzy R. Cooke, Michael J. Moore, John J. Stegeman, Donald A. Metner, Joanna Y. Wilson, I. Mikaelian
Publikováno v:
Environmental Health Perspectives
Cytochrome P450 1A1 (CYP1A1) is induced by exposure to polycyclic aromatic hydrocarbons (PAHs) and planar halogenated aromatic hydrocarbons (PHAHs) such as non-ortho polychlorinated biphenyls (PCBs). In this study, we examined CYP1A1 protein expressi
Autor:
Karen A. Kidd, A. Robin Stewart, G. Bruno Rosenberg, W. Lyle Lockhart, Alex G. Salki, Dan A. Savoie, Derek C. G. Muir, Gary A. Stern, Krystyna Koczanski, Paul Wilkinson, Michael P. Stainton, B. N. Billeck
Publikováno v:
Journal of Great Lakes Research. 29:332-354
As we move toward the virtual elimination of persistent organic pollutants (POPs) in the environment our understanding of how short-term variability affects long-term trends of POPs in natural populations will become increasingly more important. In t
Publikováno v:
Journal of Great Lakes Research. 29:258-266
Little is known about the concentrations of mercury (Hg) and factors affecting this contaminant in tropical freshwater biota. Lake Malawi, an East African Rift Valley lake, is internationally renowned for having the highest diversity of fish species
Autor:
Dixon H. Landers, Christopher L. Baron, Scott B. Brown, Robert E. Evans, Susan Allen-Gil, W. Lyle Lockhart, Lawrence R. Curtis, J.F Klaverkamp, Donald A. Metner, V.P. Palace
Publikováno v:
Chemosphere. 45:185-193
Induction of phase I biotransformation enzymes is recognized as a hallmark response in fish exposed to coplanar PCBs. Depletions of vitamins A and E and disrupted thyroid hormone and glandular structure secondary to this induction have not yet been e
Autor:
Derek C. G. Muir, W. Lyle Lockhart, Dan A. Savoie, Dorothea F. K. Rawn, Paul Wilkinson, G. Bruno Rosenberg
Publikováno v:
Journal of Great Lakes Research. 26:3-17
Two dated sediment cores; one taken from the north basin and one from the south basin of Lake Winnipeg (Manitoba, Canada) were analyzed for PCBs and organochlorine insecticides in order to examine the depositional history of these persistent organic
Publikováno v:
Environmental Toxicology and Chemistry. 18:1992-2000
Individuals from lake trout (Salvelinus namaycush) and white sucker (Catastomus commersoni) populations in a small lake located in the Experimental Lakes Area in northwestern Ontario, Canada, were treated with single intraperitoneal injections of tox
Autor:
Scott B. Brown, Peter D. Delorme, W. Lyle Lockhart, Derek C. G. Muir, Frederick J. Ward, Robert E. Evans
Publikováno v:
Environmental Toxicology and Chemistry. 17:922-927
Brood stock rainbow trout were intraperitoneally injected with corn oil containing a nominal dose of 0 or 3 {micro}g [{sup 14}]2,3,4,7,8-pentachlorodibenzofuran (P{sub 5}CDF)/kg (8.8 nmol/kg). The fish were held on a light cycle designed to induce sp
Publikováno v:
Science of The Total Environment. 197:87-109
As part of the Slave River Environmental Quality Monitoring Program, a background data set of baseline concentrations was collected for various environmental components including fish, water, bottom sediment, and suspended sediment. Fish collections