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: (EM-496)
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EM-496: Sediment nitrification and denitrification in a Lake Superior estuary
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EM Identity and Description
| EM-496 | |
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Document Author
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Brent J. Bellinger, Terri M. Jicha, LaRae P. Lehto, Lindsey R. Seifert-Monson, David W. Bolgrien, Matthew A. Starry, Theodore R. Angradi, Mark S. Pearson, Colleen Elonen, and Brian H. Hill |
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Document Year
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2014 |
Variable General Info
Denitrification rate ?Comment:Simulations of denitrification were based on the combined regression model. Spring and summer rates were simulated separately (based on water temperature) for different water depths, across a range of dissolved nitrate-nitrite concentrations. The remaining model variables were held constant for the simulations. Graphed results. |
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Variable ID
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10736 |
| DeNIT | |
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Qualitative-Quantitative
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Quantitative (Cardinal Only) |
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Cardinal-Ordinal
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Cardinal |
| mg N m^-2 d^-1 |
Variable Typology
Denitrification rate ?Comment:Simulations of denitrification were based on the combined regression model. Spring and summer rates were simulated separately (based on water temperature) for different water depths, across a range of dissolved nitrate-nitrite concentrations. The remaining model variables were held constant for the simulations. Graphed results. |
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Predictor-Intermediate-Response
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Response |
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Predictor Variable Type
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Not applicable |
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Response Variable Type
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Computed Variable |
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Data Source/Type
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Not applicable |
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Variable Classification Hierarchy
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5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
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--Chemical (C, N, P, sediment/particulate) characteristics of ecosystem components |
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----Nitrogen-related characteristics of ecosystem components |
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------Reactive nitrogen conversion to N2 (i.e., complete denitrification) |
Variable Spatial Characteristics
Denitrification rate ?Comment:Simulations of denitrification were based on the combined regression model. Spring and summer rates were simulated separately (based on water temperature) for different water depths, across a range of dissolved nitrate-nitrite concentrations. The remaining model variables were held constant for the simulations. Graphed results. |
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Spatial Extent Area
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10-100 km^2 |
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Spatially Distributed?
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Yes |
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Observations Spatially Patterned?
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Yes |
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Spatial Grain Type
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other (specify), for irregular (e.g., stream reach, lake basin) |
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Spatial Grain Size
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35 km river estuary reach, 0 to 5 m depth by 1 m increment |
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Spatial Density
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Not applicable |
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EnviroAtlas URL
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Variable Temporal Characteristics
Denitrification rate ?Comment:Simulations of denitrification were based on the combined regression model. Spring and summer rates were simulated separately (based on water temperature) for different water depths, across a range of dissolved nitrate-nitrite concentrations. The remaining model variables were held constant for the simulations. Graphed results. |
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Temporal Extent
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July 2011 to September 2012 |
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Temporally Distributed?
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Not applicable |
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Regular Temporal Grain?
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Not applicable |
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Temporal Grain Size Value
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Not applicable |
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Temporal Grain Size Units
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Not applicable |
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Temporal Density
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Not applicable |
Variable Values
Denitrification rate ?Comment:Simulations of denitrification were based on the combined regression model. Spring and summer rates were simulated separately (based on water temperature) for different water depths, across a range of dissolved nitrate-nitrite concentrations. The remaining model variables were held constant for the simulations. Graphed results. |
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mg N m^-2 d^-1 ?Comment:Graphed results. |
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Min Value
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Values vary by Run; view Runs to see values |
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Max Value
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Values vary by Run; view Runs to see values |
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Other Value Type
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Not applicable |
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Other Value
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Not reported |
Variable Variability and Sensitivity
Denitrification rate ?Comment:Simulations of denitrification were based on the combined regression model. Spring and summer rates were simulated separately (based on water temperature) for different water depths, across a range of dissolved nitrate-nitrite concentrations. The remaining model variables were held constant for the simulations. Graphed results. |
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Variability Expression Given?
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No |
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Variability Metric
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None |
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Variability Value
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None |
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Variability Units
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None |
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Resampling Used?
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Not applicable |
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Variability Expression Used in Modeling?
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Not applicable |
Variable Operational Validation (Response Variables only)
| Denitrification rate | |
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Variable ID
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10736 |
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Validated?
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Not applicable |
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Validation Approach (within, between, etc.)
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None |
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Validation Quality (Qual/Quant)
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None |
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Validation Method (Stat/Deviance)
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None |
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Validation Metric
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None |
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Validation Value
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None |
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Validation Units
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None |
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Use of Measured Response Data
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None |