Mercury trends and cycling in northern Wisconsin related to atmospheric and hydrologic processes

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  • Source:
    Canadian journal of fisheries and aquatic sciences, 2019, v. 76, no. 5, p. 831-846. 76 5
  • Publisher:
    NRC Research Press
  • Language:
    English
  • Publication Type:
    Journal Article
  • Online Access:
    http://dx.doi.org/10.1139/cjfas-2018-0157
  • Publication Date:
    Jan 1, 2019
  • Additional Information
    • Author:
      Watras, C.J.; Grande, D.; Latzka, A.W.; Tate, L.S.
    • Author Affiliation:
      Bureau of Water Quality, Wisconsin Department of Natural Resources & Center for Limnology, University of Wisconsin-Madison, USA.
    • Abstract:
      Atmospheric deposition is the principal source of mercury (Hg) to remote northern landscapes, but its fate depends on multiple factors and internal feedbacks. Here we document long-term trends and cycles of Hg in the air, precipitation, surface water, and fish of northern Wisconsin that span the past three decades, and we investigate relationships to atmospheric processes and other variables, especially the regional water cycle. Consistent with declining emission inventories, there was evidence of declining trends in these time series, but the time series for Hg in some lakes and most fish were dominated by a near-decadal oscillation that tracked the regional oscillation of water levels. Concentrations of important solutes (SO4, dissolved organic carbon) and the acid–base status of lake water also tracked water levels in ways that cannot be attributed to simple dilution or concentration. The explanatory mechanism is analogous to the “reservoir effect” wherein littoral sediments are periodically exposed and reflooded, altering the internal cycles of sulfur, carbon, and mercury. These climatically driven, near-decadal oscillations confound short or sparse time series and complicate relationships among Hg emissions, deposition, and bioaccumulation.
    • Descriptors:
      air; atmospheric deposition; atmospheric precipitation; bioaccumulation; dissolved organic carbon; emissions; fish; hydrologic cycle; inventories; lakes; landscapes; littoral zone; mercury; sediments; solutes; sulfur; surface water; time series analysis; Wisconsin
    • Subject Terms:
      article
    • ISSN:
      12057533
    • Subset:
      Indexing Branch - NAL
    • Publication Date:
      00000000
    • Accession Number:
      IND606439760
  • Citations
    • ABNT:
      WATRAS, C. J. et al. Mercury trends and cycling in northern Wisconsin related to atmospheric and hydrologic processes. Canadian journal of fisheries and aquatic sciences, [s. l.], v. 76, n. 5, p. 831–846, 2019. DOI http://dx.doi.org/10.1139/cjfas-2018-0157. Disponível em: http://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=agr&AN=IND606439760&custid=s6224580. Acesso em: 9 dez. 2019.
    • AMA:
      Watras CJ, Grande D, Latzka AW, Tate LS. Mercury trends and cycling in northern Wisconsin related to atmospheric and hydrologic processes. Canadian journal of fisheries and aquatic sciences. 2019;76(5):831-846. doi:http://dx.doi.org/10.1139/cjfas-2018-0157.
    • APA:
      Watras, C. J., Grande, D., Latzka, A. W., & Tate, L. S. (2019). Mercury trends and cycling in northern Wisconsin related to atmospheric and hydrologic processes. Canadian Journal of Fisheries and Aquatic Sciences, 76(5), 831–846. https://doi.org/http://dx.doi.org/10.1139/cjfas-2018-0157
    • Chicago/Turabian: Author-Date:
      Watras, C.J., D. Grande, A.W. Latzka, and L.S. Tate. 2019. “Mercury Trends and Cycling in Northern Wisconsin Related to Atmospheric and Hydrologic Processes.” Canadian Journal of Fisheries and Aquatic Sciences 76 (5): 831–46. doi:http://dx.doi.org/10.1139/cjfas-2018-0157.
    • Harvard:
      Watras, C. J. et al. (2019) ‘Mercury trends and cycling in northern Wisconsin related to atmospheric and hydrologic processes’, Canadian journal of fisheries and aquatic sciences, 76(5), pp. 831–846. doi: http://dx.doi.org/10.1139/cjfas-2018-0157.
    • Harvard: Australian:
      Watras, CJ, Grande, D, Latzka, AW & Tate, LS 2019, ‘Mercury trends and cycling in northern Wisconsin related to atmospheric and hydrologic processes’, Canadian journal of fisheries and aquatic sciences, vol. 76, no. 5, pp. 831–846, viewed 9 December 2019, .
    • MLA:
      Watras, C. J., et al. “Mercury Trends and Cycling in Northern Wisconsin Related to Atmospheric and Hydrologic Processes.” Canadian Journal of Fisheries and Aquatic Sciences, vol. 76, no. 5, 2019, pp. 831–846. EBSCOhost, doi:http://dx.doi.org/10.1139/cjfas-2018-0157.
    • Chicago/Turabian: Humanities:
      Watras, C.J., D. Grande, A.W. Latzka, and L.S. Tate. “Mercury Trends and Cycling in Northern Wisconsin Related to Atmospheric and Hydrologic Processes.” Canadian Journal of Fisheries and Aquatic Sciences 76, no. 5 (2019): 831–46. doi:http://dx.doi.org/10.1139/cjfas-2018-0157.
    • Vancouver/ICMJE:
      Watras CJ, Grande D, Latzka AW, Tate LS. Mercury trends and cycling in northern Wisconsin related to atmospheric and hydrologic processes. Canadian journal of fisheries and aquatic sciences [Internet]. 2019 [cited 2019 Dec 9];76(5):831–46. Available from: http://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=agr&AN=IND606439760&custid=s6224580