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Effects of acidic meltwater on chemical conditions at nearshore spawning sites

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Abstract

Chemical conditions at lake charr (Salvelinus namaycush) spawning sites were monitored during snowmelt in low alkalinity lakes in Ontario, Canada. Embryos within the interstitial water of the spawning substrate were exposed to abrupt and potentially toxic levels of H+ and inorganic Al as acidic runoff water inundated the shallow nearshore sites. Early runoff events, those that occurred while the lake ice was still snow-covered and under-ice water temperatures were <2°C, appeared to be most threatening, because of deep penetration of the runoff water. These highly site-specific events exhibit wide temporal and spatial variability.

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Authors and Affiliations

  1. Department of Zoology, University of Guelph, NIG 2W1, Guelph, Ontario

    J. M. Gunn

  2. Ontario Ministry of Natural Resources, P3A 4S2, Sudbury, Ontario, Canada

    J. M. Gunn

  3. Ontario Ministry of the Environment, P3E 5P9, Sudbury, Ontario, Canada

    W. Keller

Authors
  1. J. M. Gunn
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  2. W. Keller
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Gunn, J.M., Keller, W. Effects of acidic meltwater on chemical conditions at nearshore spawning sites. Water Air Soil Pollut 30, 545–552 (1986). https://doi.org/10.1007/BF00303317

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  • DOI: https://doi.org/10.1007/BF00303317

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