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Non-floodplain Wetlands Affect Watershed Nutrient Dynamics: A Critical Review
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    Non-floodplain Wetlands Affect Watershed Nutrient Dynamics: A Critical Review
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    • Heather E. Golden*
      Heather E. Golden
      National Exposure Research Laboratory, U.S. Environmental Protection Agency, Office of Research and Development, 26 West Martin Luther King Drive, Cincinnati, Ohio 45268, United States
      *H. Golden. E-mail: [email protected]; Tel.: +1 513 569 7773.
    • Adnan Rajib
      Adnan Rajib
      Oak Ridge Institute for Science and Education, c/o Environmental Protection Agency, Office of Research and Development, 26 West Martin Luther King Drive, Cincinnati, Ohio 45268, United States
      More by Adnan Rajib
    • Charles R. Lane
      Charles R. Lane
      National Exposure Research Laboratory, U.S. Environmental Protection Agency, Office of Research and Development, 26 West Martin Luther King Drive, Cincinnati, Ohio 45268, United States
    • Jay R. Christensen
      Jay R. Christensen
      National Exposure Research Laboratory, U.S. Environmental Protection Agency, Office of Research and Development, 26 West Martin Luther King Drive, Cincinnati, Ohio 45268, United States
    • Qiusheng Wu
      Qiusheng Wu
      Department of Geography, University of Tennessee, Knoxville, Tennessee 37996, United States
      More by Qiusheng Wu
    • Samson Mengistu
      Samson Mengistu
      National Research Council, National Academy of Sciences, c/o Environmental Protection Agency, Office of Research and Development, 26 West Martin Luther King Drive, Cincinnati, Ohio 45268, United States
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    Environmental Science & Technology

    Cite this: Environ. Sci. Technol. 2019, 53, 13, 7203–7214
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    https://doi.org/10.1021/acs.est.8b07270
    Published June 5, 2019
    Copyright © 2019 American Chemical Society

    Abstract

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    Wetlands have the capacity to retain nitrogen and phosphorus and are thereby often considered a viable option for improving water quality at local scales. However, little is known about the cumulative influence of wetlands outside of floodplains, i.e., non-floodplain wetlands (NFWs), on surface water quality at watershed scales. Such evidence is important to meet global, national, regional, and local water quality goals effectively and comprehensively. In this critical review, we synthesize the state of the science about the watershed-scale effects of NFWs on nutrient-based (nitrogen, phosphorus) water quality. We further highlight where knowledge is limited in this research area and the challenges of garnering this information. On the basis of previous wetland literature, we develop emerging concepts that assist in advancing the science linking NFWs to watershed-scale nutrient conditions. Finally, we ask, “Where do we go from here?” We address this question using a 2-fold approach. First, we demonstrate, via example model simulations, how explicitly considering NFWs in watershed nutrient modeling changes predicted nutrient yields to receiving waters–and how this may potentially affect future water quality management decisions. Second, we outline research recommendations that will improve our scientific understanding of how NFWs affect downstream water quality.

    Copyright © 2019 American Chemical Society

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    The Supporting Information is available free of charge on the ACS Publications website at DOI: 10.1021/acs.est.8b07270.

    • Description of how wetland loss was calculated for Figure 3, and documentation (description, tables, figures) of the SWAT model set up, including parameter values, calibration procedures, and model evaluation (PDF)

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    Environmental Science & Technology

    Cite this: Environ. Sci. Technol. 2019, 53, 13, 7203–7214
    Click to copy citationCitation copied!
    https://doi.org/10.1021/acs.est.8b07270
    Published June 5, 2019
    Copyright © 2019 American Chemical Society

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