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  1. Article

    Open Access

    Isotopic signals in an agricultural watershed suggest denitrification is locally intensive in riparian areas but extensive in upland soils

    Nitrogen loss from cultivated soils threatens the economic and environmental sustainability of agriculture. Nitrate (NO3−) derived from nitrification of nitrogen fertilizer and ammonified soil organic nitrogen ma...

    W. A. Sigler, S. A. Ewing, S. D. Wankel, C. A. Jones, S. Leuthold… in Biogeochemistry (2022)

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  2. Article

    Open Access

    Fallow replacement and alternative nitrogen management for reducing nitrate leaching in a semiarid region

    Nitrate (NO3 −) leaching into groundwater is a growing global concern for health, environmental, and economic reasons, yet little is known about the effects of agricultural management prac...

    A. A. John, C. A. Jones, S. A. Ewing, W. A. Sigler… in Nutrient Cycling in Agroecosystems (2017)

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  3. No Access

    Article

    Rapid runoff via shallow throughflow and deeper preferential flow in a boreal catchment underlain by frozen silt (Alaska, USA)

    In high-latitude catchments where permafrost is present, runoff dynamics are complicated by seasonal active-layer thaw, which may cause a change in the dominant flowpaths as water increasingly contacts mineral...

    J. C. Koch, S. A. Ewing, R. Striegl, D. M. McKnight in Hydrogeology Journal (2013)

  4. No Access

    Article

    Sublethal copper stress and susceptibility of channel catfish to experimental infections withIchthyophthirius multifiliis

    M. S. Ewing, S. A. Ewing, M. A. Zimmer in Bulletin of Environmental Contamination an… (1982)