Spatial and temporal patterns of mercury accumulation in lacustrine sediments across the Laurentian Great Lakes region

Spatial and temporal patterns of mercury accumulation in lacustrine sediments across the Laurentian Great Lakes region

2012

Data from 104 sediment cores from the Great Lakes and inland lakes in the region were compiled to assess historical and recent changes in mercury (Hg) deposition. The lower Great Lakes showed sharp increases in Hg loading c. 1850–1950 from point-source water dischargers"

Drevnick, Paul E.
Engstrom, Daniel R.
Driscoll, Charles T.
Swain, Edward B.
Balogh, Steven J.
Kamman, Neil C.
Long, David T.
Muir, Derek G.C.
Parsons, Matthew J.
Rolfhus, Kristofer R.
Rossmann, Ronald

INRS-ETE Université du Québec
St. Croix Watershed Research Station: Science Museum of MN
Dept. of Civil and Environmental Engineering, NY
Also noted as Swain, E. B.. MPCA
Also noted as Balogh, S. J.. Metropolitan Council Environmental Services, St. Paul MN
Vermont Dept. of Environmental Conservation
Dept. of Geological Sciences, MI State University
Aquatic Ecosystem Protection Research Division, Environment Canada
Dept. of Geological Sciences, MI State University
Dept. of Chemistry, University of WI-La Crosse
Visiting Scientist, US EPA, Large Lakes Research Station, MI

8

Water Conveyance & Hydraulics

sediment
sediments
sedimentation
lake
lakes
water quality & pollutants
water quality and pollutants
Great Lakes
mercury
paleolimnology

2010-2019

Yes

Lake Superior and inland lakes exhibited a pattern of Hg loading consistent with an atmospheric source – gradual increases followed by recent (post-1980) decreases. Variation in sedimentary Hg flux among inland lakes was primarily attributed to the ratio of watershed area:lake area

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