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

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  • Additional Information
    • Author Affiliation:
      Bureau of Air Management, Wisconsin Department of Natural Resources, Madison, Wisc., USA.
      Bureau of Fisheries Management, Wisconsin Department of Natural Resources, Madison, Wisc., USA.
      Bureau of Fisheries Management, Wisconsin Department of Natural Resources, Madison, Wisc., USA.
    • Physical Description:
      16
    • 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
    • Geographic Terms:
      Wisconsin
    • Subject Terms:
      article
    • Subset:
      Indexing Branch - NAL
    • Accession Number:
      10.1139/cjfas-2018-0157
    • ISSN:
      1205-7533
    • 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.
    • 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 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: 27 nov. 2020.
    • 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: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/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: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: 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 27 November 2020, .
    • 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, Jan. 2019, pp. 831–846. EBSCOhost, doi: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 (January 1, 2019): 831–46. doi: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 Jan 1 [cited 2020 Nov 27];76(5):831–46. Available from: http://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=agr&AN=IND606439760&custid=s6224580