SS4.02 The Role of Microbiology in Trace Metal and Organic Contaminant Cycling in Aquatic Systems
Date: Wednesday, June 12, 2002
Time: 9:30:00 AM
Location: Esquimalt
 
RenczA, Geological Survey of Canada, Ottawa, Canada, arencz@gsc.nrcan.gc.ca
O'Driscoll, N, , University of Ottawa, Ottawa, Canada, 
Beauchamp, S, , Environment Canada, Halifax, Canada, 
Burgess, N, , Environment Canada, St. John, Canada, 
Clair, T, , Environment Canada, Sackville, Canada, 
Hall, G, , Geological Survey of Canada, Ottawa, Canada, 
Sangster, A, , Geological Survey of Canada, Ottawa, Canada, 
Lean, D, , University of Ottawa, Ottawa, Canada, 
Scott, S, , University of Ottawa, Ottawa, Canada, 
Telmer, K, , University of Victoria, Victoria, Canada, 
 
A Multi-Disciplinary Study of Mercury Cycling in a Wetland Environment
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Kejimkujik Park, Nova Scotia is noted for having the highest mercury concentrations in loon blood in North America. This study was designed to investigate sources and processes that may lead to high mercury levels. As metals move through compartments of ecosystems the processes controlling their distribution fall under the expertise of many scientific disciplines. Our Multidisciplinary team has collected a broad array of mercury data from the atmosphere, water, vegetation, and geology of Kejimkujik Park. Measurements of mercury speciation (methyl mercury in particular), mercury transformation, and transport (flux) have been important aspects of the research. Areas of continuing research that were identified include: the importance of wetlands to the production and transport of methyl mercury, the effects of soils and geology as a mercury source, and mercury flux from various media (soil, water, and vegetation). Other areas of research that have been investigated include the importance of microbiological processes in mercury cycling, sedimentation processes as a sink for mercury, mercury uptake in vegetation, and the significance of ground water as mercury source to freshwater lakes.