Search Results - "Wren, C.D."

Depressed mercury levels in biota from acid and metal stressed lakes near Sudbury, Ontario by Wren, C.D. (B.A.R. Environmental, Toronto (Canada)), Stokes, P.M

“…Recent studies have suggested that mercury levels in fish are elevated in acidic lakes. The purpose of this study was to determine if negative relationships…”
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Cause-effect linkages between chemicals and populations of mink (Mustela vison) and otter (Lutra canadensis) in the Great Lakes basin by Wren, C D

“…Following outbreaks of reproductive failure in commercial ranching operations, laboratory experiments showed that mink are extremely sensitive to…”
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Exposure of the earthworm, Lumbricus terrestris, to diazinon, and the relative risk to passerine birds by Stephenson, G.L., Wren, C.D., Middelraad, I.C.J., Warner, J.E.

“…Laboratory experiments were conducted to determine the acute lethality of diazinon to the earthworm, Lumbricus terrestris, in a sandy loam soil. The 7-d and…”
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Applications of toxicity curves in assessing the toxicity of diazinon and pentachlorophenol to Lumbricus terrestris in natural soils by Lanno, R.P., Stephenson, G.L., Wren, C.D.

“…Toxicity tests were conducted with Lumbricus terrestris exposed to diazinon in three different natural soil types (Brookston Clay, Fox Sand and Guelph Loam)…”
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Distribution of metals in tissues of beaver, raccoon and otter from Ontario, Canada by Wren, C D

“…Mercury and selenium concentrations were positively correlated in liver tissue of beaver, raccoon and otter from an undisturbed watershed in south central…”
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The effects of polychlorinated biphenyls and methylmercury, singly and in combination on mink. II. Reproduction and kit development by Wren, C.D, Hunter, D.B, Leatherland, J.F, Stokes, P.M

“…The effects of simultaneous exposure to polychlorinated biphenyls and methlymercury on reproductive success of mink and kit growth and development is reported…”
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Ra-226 concentrations in otter, Lutra canadensis, trapped near uranium tailings at Elliot Lake, Ontario by WREN, C. D, CLOUTIER, N. R, LIM, T. P, DAVE, N. K

“…During the 1984-85 season, 7 other carcasses were obtained from licenced trappers operating within 10 km of uranium mine tailings at Elliot lake. An otter from…”
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