Professor and Bocock Chair for Agriculture and the Environment
I completed my B.Sc. (Agr.) at the University of Guelph (Soil Science and Chemistry) in 1981, and my Ph.D. at the University of Western Ontario (Geochemistry) in 1986. After postdoctoral research at the University of California, Riverside (1987) and at the University of Western Ontario (1988-1989), I joined the Geological Institute at the University of Berne, Switzerland, as Oberassistent. I completed my Habilitation (Geochemistry) at the University of Berne in 1995. In October of 2000, I joined the University of Heidelberg as Professor, becoming Director of the Institute of Environmental Geochemistry. Since October 2011, I hold the position of Bocock Chair in Agriculture and Environment at the University of Alberta, Faculty of Agricultural, Life & Environmental Sciences, in the Department of Renewable Resources. I am also a participant in the Land Reclamation International Graduate School (LRIGS) program sponsored by NSERC CREATE.
348B South Academic Building University of Alberta
Geochemistry of the Soil Environment
Cycling of trace metals (Pb, Sb, As, Cd, Ag, Tl and Hg) at the interface between lithosphere, atmosphere, hydrosphere, and biosphere; fractionation of elements during chemical weathering; soils as a source of trace metals to the atmosphere; soils as sources and sinks for trace metals to and from natural waters
Archives of Environmental Change
Reconstructing natural and anthropogenic sources of trace metals to the atmosphere using sphagnum moss, peat bogs and polar ice; variations with climate change during the Holocene
Application of radiogenic isotopes (Pb, Sr) for studying chemical weathering, evolution of natural waters, and tracing natural and anthropogenic aerosols; fallout radionuclides (137Cs, 210Pb, 241Am) for dating of peat cores from bogs
Environmental applications of ICP sector-field mass spectrometry (ICP-SMS)
pH and redox chemistry of soil solutions and sediment pore waters; understanding natural enrichments of trace elements (As, Cu, Hg, Mo, Ni, Se, U, V) in wetlands
Agriculture and the Environment
Application of the fundamental research topics listed above to understand the impacts of agricultural systems on the environment, and the effects of environmental change on agriculture, at local, regional, and global scales.
The logo for my research group represents Soil, Water, Air, Manure, and Plants. The SWAMP Laboratory is a state-of-the-art, ultra-clean, metal-free research facility, devoted to environmental and agricultural research and teaching. This lab is being used to study the sources, transformations, behaviour, and fate of trace elements in Soils, Waters, Air, Manures, and Plants (SWAMP).
Graduate Student Opportunities
PhD positions in bioavailability / bioaccessibility of trace elements in aquatic systems and airborn ... [Read more]
MSc positions focused on the properties, mobility and removal of trace elements in a constructed wet ... [Read more]
The goal of this PhD study will be to determine the size distribution of trace elements in snow The ... [Read more]
The goal of the study will be to determine the natural abundance of trace elements in the crustal ae ... [Read more]