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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. 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)