Food chain transfer of selenium in lentic and lotic habitats of a western Canadian watershed.

@article{Orr2006FoodCT,
  title={Food chain transfer of selenium in lentic and lotic habitats of a western Canadian watershed.},
  author={Patricia L Orr and Karin R.A. Guiguer and Cynthia K Russel},
  journal={Ecotoxicology and environmental safety},
  year={2006},
  volume={63 2},
  pages={
          175-88
        }
}
Selenium (Se) is an essential micronutrient, exhibiting a narrow margin between nutritionally optimal and potentially toxic concentrations. Egg-laying vertebrates at the top of aquatic food chains are most at risk in environments with elevated aqueous Se concentrations. The Elk River watershed in British Columbia, Canada receives effluents containing Se from five coal mine operations. This study tested three hypotheses that might account for higher Se concentrations in fish from lentic compared… CONTINUE READING
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