Spatiotemporal patterns of mercury accumulation in lake sediments of western North America. Drevnick, P. E., Cooke, C. A., Barraza, D., Blais, J. M., Coale, K. H., Cumming, B. F., Curtis, C. J., Das, B., Donahue, W. F., Eagles-Smith, C. A., Engstrom, D. R., Fitzgerald, W. F., Furl, C. V., Gray, J. E., Hall, R. I., Jackson, T. A., Laird, K. R., Lockhart, W. L., Macdonald, R. W., Mast, M. A., Mathieu, C., Muir, D. C. G., Outridge, P. M., Reinemann, S. A., Rothenberg, S. E., Ruiz-Fernández, A. C., Louis, V. L. S., Sanders, R. D., Sanei, H., Skierszkan, E. K., Van Metre, P. C., Veverica, T. J., Wiklund, J. A., & Wolfe, B. B. Science of The Total Environment, 568:1157–1170, October, 2016.
Spatiotemporal patterns of mercury accumulation in lake sediments of western North America [link]Paper  doi  abstract   bibtex   
For the Western North America Mercury Synthesis, we compiled mercury records from 165 dated sediment cores from 138 natural lakes across western North America. Lake sediments are accepted as faithful recorders of historical mercury accumulation rates, and regional and sub-regional temporal and spatial trends were analyzed with descriptive and inferential statistics. Mercury accumulation rates in sediments have increased, on average, four times (4×) from 1850 to 2000 and continue to increase by approximately 0.2μg/m2 per year. Lakes with the greatest increases were influenced by the Flin Flon smelter, followed by lakes directly affected by mining and wastewater discharges. Of lakes not directly affected by point sources, there is a clear separation in mercury accumulation rates between lakes with no/little watershed development and lakes with extensive watershed development for agricultural and/or residential purposes. Lakes in the latter group exhibited a sharp increase in mercury accumulation rates with human settlement, stabilizing after 1950 at five times (5×) 1850 rates. Mercury accumulation rates in lakes with no/little watershed development were controlled primarily by relative watershed size prior to 1850, and since have exhibited modest increases (in absolute terms and compared to that described above) associated with (regional and global) industrialization. A sub-regional analysis highlighted that in the ecoregion Northwestern Forest Mountains, \textless1% of mercury deposited to watersheds is delivered to lakes. Research is warranted to understand whether mountainous watersheds act as permanent sinks for mercury or if export of “legacy” mercury (deposited in years past) will delay recovery when/if emissions reductions are achieved.
@article{drevnick_spatiotemporal_2016,
	title = {Spatiotemporal patterns of mercury accumulation in lake sediments of western {North} {America}},
	volume = {568},
	issn = {0048-9697},
	url = {https://www.sciencedirect.com/science/article/pii/S0048969716305824},
	doi = {10.1016/j.scitotenv.2016.03.167},
	abstract = {For the Western North America Mercury Synthesis, we compiled mercury records from 165 dated sediment cores from 138 natural lakes across western North America. Lake sediments are accepted as faithful recorders of historical mercury accumulation rates, and regional and sub-regional temporal and spatial trends were analyzed with descriptive and inferential statistics. Mercury accumulation rates in sediments have increased, on average, four times (4×) from 1850 to 2000 and continue to increase by approximately 0.2μg/m2 per year. Lakes with the greatest increases were influenced by the Flin Flon smelter, followed by lakes directly affected by mining and wastewater discharges. Of lakes not directly affected by point sources, there is a clear separation in mercury accumulation rates between lakes with no/little watershed development and lakes with extensive watershed development for agricultural and/or residential purposes. Lakes in the latter group exhibited a sharp increase in mercury accumulation rates with human settlement, stabilizing after 1950 at five times (5×) 1850 rates. Mercury accumulation rates in lakes with no/little watershed development were controlled primarily by relative watershed size prior to 1850, and since have exhibited modest increases (in absolute terms and compared to that described above) associated with (regional and global) industrialization. A sub-regional analysis highlighted that in the ecoregion Northwestern Forest Mountains, {\textless}1\% of mercury deposited to watersheds is delivered to lakes. Research is warranted to understand whether mountainous watersheds act as permanent sinks for mercury or if export of “legacy” mercury (deposited in years past) will delay recovery when/if emissions reductions are achieved.},
	language = {en},
	urldate = {2023-06-30},
	journal = {Science of The Total Environment},
	author = {Drevnick, Paul E. and Cooke, Colin A. and Barraza, Daniella and Blais, Jules M. and Coale, Kenneth H. and Cumming, Brian F. and Curtis, Chris J. and Das, Biplob and Donahue, William F. and Eagles-Smith, Collin A. and Engstrom, Daniel R. and Fitzgerald, William F. and Furl, Chad V. and Gray, John E. and Hall, Roland I. and Jackson, Togwell A. and Laird, Kathleen R. and Lockhart, W. Lyle and Macdonald, Robie W. and Mast, M. Alisa and Mathieu, Callie and Muir, Derek C. G. and Outridge, Peter M. and Reinemann, Scott A. and Rothenberg, Sarah E. and Ruiz-Fernández, Ana Carolina and Louis, Vincent L. St. and Sanders, Rhea D. and Sanei, Hamed and Skierszkan, Elliott K. and Van Metre, Peter C. and Veverica, Timothy J. and Wiklund, Johan A. and Wolfe, Brent B.},
	month = oct,
	year = {2016},
	keywords = {Terrestrial Ecoregions (CEC 1997)},
	pages = {1157--1170},
}
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