Ecosystem restoration incorporating minerotrophic ecology and Stoneworts that accumulate 226Ra

  • Margarete Kalin
  • Martin P. Smith
  • Mark B. Wittrup


Uranium removal from shallow lakes ranged from 0.15 kg.d-1.ha-1 to 0.65 kg.d-1.ha-1, while 226Ra removal ranged from 0.05 to 0.2 MBq. d-1.ha-1 in the Rabbit Lake drainage basin in northern Saskatchewan, Canada. The removal of U is related to the organic and inorganic components of the TSS in the lakes but 226Ra is concentrated by stoneworts (Characeae), a family of macrophytic algae. 226Ra concentrations in algal biomass range from 5 Bq.g dry weight-1 (gdw) to as high as 50 Bq.gdw-1, averaging 20 Bq.gdw-1. These alkaline minerotrophic lakes can be integrated into a decommissioning approach.


Total Suspend Solid Drainage Basin Submerged Aquatic Vegetation Standing Biomass Barium Sulphate 
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Copyright information

© Springer-Verlag Berlin Heidelberg 2002

Authors and Affiliations

  • Margarete Kalin
    • 1
  • Martin P. Smith
    • 2
  • Mark B. Wittrup
    • 3
  1. 1.Boojum Research LimitedTorontoCanada
  2. 2.Boojum Research LimitedTorontoCanada
  3. 3.Cameco CorporationSaskatoonCanada

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