A two-year study of physical, biological, and chemical aspects of Minnesota
wastewater treatment ponds was conducted. As a part of this study, the one-dimensional
unsteady advection/diffusion lake model MINLAKE was adapted for simulation of pond
processes. A special sub-routine to track the ponds' Daphnia population was developed.
Toxic effects of ammonia, low dissolved oxygen, and hydrogen sulfide were included
in the model. The model and sub-routine were calibrated, and showed reasonable
agreement with population data collected during the study. Development of the Daphnia
sub-routine and its pelformance in the overall pond model are discussed herein.
Hathaway, Charles Joseph; Stefan, Heinz G..
Modeling Daphnia Populations in Wastewater Stabilization Ponds in Minnesota.
St. Anthony Falls Hydraulic Laboratory.
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