Modelling Dissolved Oxygen/Sediment Oxygen Demand under Ice in a Shallow Eutrophic Prairie Reservoir

Dissolved oxygen is an influential factor of aquatic ecosystem health. Future predictions of oxygen deficits are paramount for maintaining water quality. Oxygen demands depend greatly on a waterbody’s attributes. A large sediment–water interface relative to volume means sediment oxygen demand has greater influence in shallow systems. In shallow, ice-covered waterbodies the potential for winter anoxia is high. Water quality models offer two options for modelling sediment oxygen demand: a zero-order constant rate, or a sediment diagenesis model. The constant rate is unrepresentative of a real system, yet a diagenesis model is difficult to parameterise and calibrate without data. We use the water quality model CE-QUAL-W2 to increase the complexity of a zero-order sediment compartment with limited data. We model summer and winter conditions individually to capture decay rates under-ice. Using a semi-automated calibration method, we find an annual pattern in sediment oxygen demand that follows the trend of chlorophyll-a concentrations in a shallow, eutrophic Prairie reservoir. We use chlorophyll-a as a proxy for estimation of summer oxygen demand and winter decay. We show that winter sediment oxygen demand is dependent on the previous summer’s maximum chlorophyll-a concentrations.

[1]  S. Chapra.  Surface Water-Quality Modeling , 1996 .

[2]  Keith Beven,et al.  A manifesto for the equifinality thesis , 2006 .

[3]  M. Edwards,et al.  Prediction and measurement of bubble formation in water treatment , 2001 .

[4]  K. Chun,et al.  Who Smells? Forecasting Taste and Odor in a Drinking Water Reservoir. , 2015, Environmental science & technology.

[5]  Kent W. Thornton,et al.  Reservoir Limnology: Ecological Perspectives , 1990 .

[6]  A. Vehmaa,et al.  Development of phytoplankton in Lake Pääjärvi (Finland) during under-ice convective mixing period , 2009, Aquatic Ecology.

[7]  K. Lindenschmidt,et al.  Impacts of Climate Change on the Water Quality of a Regulated Prairie River , 2017 .

[8]  R. Hall,et al.  Limnological succession in reservoirs: a paleolimnological comparison of two methods of reservoir formation , 1999 .

[9]  M. Leppäranta,et al.  Perspectives in winter limnology: closing the annual cycle of freezing lakes , 2009, Aquatic Ecology.

[10]  C. Arp,et al.  Predicting Late Winter Dissolved Oxygen Levels in Arctic Lakes Using Morphology and Landscape Metrics , 2015, Environmental Management.

[11]  U. Hammer.  Limnological studies of the lakes and streams of the upper qu'appelle river system, Saskatchewan, Canada , 1971, Hydrobiologia.

[12]  E. Prepas,et al.  Modelling Winter Oxygen Depletion Rates in Ice-Covered Temperate Zone Lakes in Canada , 1985 .

[13]  I. Pech,et al.  Environmental risk of dissolved oxygen depletion of diverted flood waters in river polder systems--a quasi-2D flood modelling approach. , 2009, The Science of the total environment.

[14]  Karl-Erich Lindenschmidt,et al.  The effect of complexity on parameter sensitivity and model uncertainty in river water quality modelling , 2006 .

[15]  Richard J. Williams,et al.  Assessment of current water pollution loads in Europe: estimation of gridded loads for use in global water quality models , 2012 .

[16]  P. Leavitt,et al.  Magnitudes and controls of organic and inorganic carbon flux through a chain of hard‐water lakes on the northern Great Plains , 2010 .

[17]  V. Blok,et al.  Isolation and Identification of Odourous Compounds from a Lake Subject to Cyanobacterial Blooms , 1983 .

[18]  R. Summerfelt,et al.  OXYGEN DEMAND OF LAKES: SEDIMENT AND WATER COLUMN BOD , 1987 .

[19]  Tong Yu,et al.  Model development for prediction and mitigation of dissolved oxygen sags in the Athabasca River, Canada. , 2013, The Science of the total environment.

[20]  A. Terzhevik,et al.  Physical background of the development of oxygen depletion in ice-covered lakes , 2007, Oecologia.

[21]  R. Wetzel.  Limnology: Lake and River Ecosystems , 1975 .

[22]  H. Stefan,et al.  Simulations of climate effects on water temperature, dissolved oxygen, and ice and snow covers in lakes of the contiguous U.S. under past and future climate scenarios , 2009 .

[23]  Scott A. Wells,et al.  CE-QUAL-W2: A Two-dimensional, Laterally Averaged, Hydrodynamic and Water Quality Model, Version 3.5 , 2006 .

[24]  M. Leppäranta,et al.  Physics of seasonally ice-covered lakes: a review , 2012, Aquatic Sciences.

[25]  L. J. Jackson,et al.  Biotic, chemical, and morphometric factors contributing to winter anoxia in prairie lakes , 2003 .

[26]  K. Lindenschmidt,et al.  Lake Diefenbaker temperature model , 2015 .

[27]  H. Stefan,et al.  Projected Climate Change Effects on Winterkill in Shallow Lakes in the Northern United States , 2000, Environmental Management.

[28]  M. Rask,et al.  Recovery of the fish community and changes in the lower trophic levels in a eutrophic lake after a winter kill of fish , 2010, Hydrobiologia.

[29]  Canadian Water Quality Guidelines for the Protection of Aquatic Life DISSOLVED OXYGEN , 1999 .

[30]  M. T. Arts,et al.  Seasonal and diel changes of dissolved oxygen in a hypertrophic prairie lake , 2005 .