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- 2Renewable Resources, Department of/Journal Articles (Renewable Resources)
- 1Biological Sciences, Department of
- 1Biological Sciences, Department of/Journal Articles (Biological Sciences)
- 1Graduate and Postdoctoral Studies (GPS), Faculty of
- 1Graduate and Postdoctoral Studies (GPS), Faculty of /Theses and Dissertations
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A 15,800-year record of atmospheric lead deposition on the Devon Island Ice Cap, Nunavut, Canada: Natural and anthropogenic enrichments, isotopic composition, and predominant sources
Download2007
Zheng, J., Fisher, D., Krachler, M., Shotyk, W.
Abstract: Using appropriate clean methods for handling and preparation, 57 ice samples from the Devon Island Ice Cap, representing the period 134 to 15,800 years before present (BP), were analyzed for Pb, Sc, and Pb isotopes (Pb-206, Pb-207, Pb-208) using ICP-SMS. The greatest Pb concentrations...
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2009
Krachler, M., Fisher, D., Shotyk, W., Zheng, J.
Abstract: Despite its growing environmental significance, there are no detailed historical records of atmospheric As deposition for the Northern Hemisphere. Having overcome the severe analytical challenges in measuring As in polar ice, and using an Arctic ice core representing similar to 16 ka of...
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1997
Lafferty, K.D., Shostak, A.W., Bush, A.O., Lotz, J.M.
W: e consider 27 populationa nd communityt erms used frequentlyb y parasitologistsw hen describingt he ecology of parasites. We provide suggestions for various terms in an attempt to foster consistent use and to make terms used in parasite ecology easier to interpret for those who study...