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: (EM-661)
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EM-661: Nutrient loading by anadromous alewife (Alosa pseudoharengus): contemporary patterns and predictions for restoration efforts
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EM Identity and Description
| EM-661 | |
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Document Author
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West, D. C., A. W. Walters, S. Gephard, and D. M. Post |
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Document Year
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2010 |
Variable General Info
Adult alewife numbers ?Comment:The average population returning to Bride Lake from 2003 to 2008 was nearly 90,000 fish, while in 1966 and 1967, the population averaged over 160,000 fish. The different values for this variable are part of the basis for different runs. |
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Variable ID
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15551 |
| na | |
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Qualitative-Quantitative
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Quantitative (Cardinal Only) |
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Cardinal-Ordinal
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Cardinal |
| ind. |
Variable Typology
Adult alewife numbers ?Comment:The average population returning to Bride Lake from 2003 to 2008 was nearly 90,000 fish, while in 1966 and 1967, the population averaged over 160,000 fish. The different values for this variable are part of the basis for different runs. |
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Predictor-Intermediate-Response
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Predictor |
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Predictor Variable Type
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Constant or Parameter |
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Response Variable Type
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Not applicable |
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Data Source/Type
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Local field/Lab data (e.g., particular to the EM study) |
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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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--Biological characteristics, processes or requirements of living ecosystem components |
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----Biological characteristics, processes or requirements of fauna |
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------Fish |
Variable Spatial Characteristics
Adult alewife numbers ?Comment:The average population returning to Bride Lake from 2003 to 2008 was nearly 90,000 fish, while in 1966 and 1967, the population averaged over 160,000 fish. The different values for this variable are part of the basis for different runs. |
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Spatial Extent Area
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Not recorded for Constant or Parameter Variables |
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Spatially Distributed?
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Not recorded for Constant or Parameter Variables |
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Observations Spatially Patterned?
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Not recorded for Constant or Parameter Variables |
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Spatial Grain Type
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Not recorded for Constant or Paarameter Variables |
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Spatial Grain Size
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Not recorded for Constant or Parameter Variables |
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Spatial Density
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Not recorded for Constant or Parameter Variables |
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EnviroAtlas URL
variable.detail.enviroAtlasURLHelp
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Variable Temporal Characteristics
Adult alewife numbers ?Comment:The average population returning to Bride Lake from 2003 to 2008 was nearly 90,000 fish, while in 1966 and 1967, the population averaged over 160,000 fish. The different values for this variable are part of the basis for different runs. |
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Temporal Extent
variable.detail.tempExtentHelp
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Not recorded for Constant or Parameter Variables |
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Temporally Distributed?
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Not recorded for Constant or Parameter Variables |
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Regular Temporal Grain?
variable.detail.regularTempGrainHelp
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Not recorded for Constant or Parameter Variables |
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Temporal Grain Size Value
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Not recorded for Constant or Parameter Variables |
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Temporal Grain Size Units
variable.detail.tempGrainSizeUnitHelp
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Not recorded for Constant or Parameter Variables |
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Temporal Density
variable.detail.tempDensityHelp
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Not recorded for Constant or Parameter Variables |
Variable Values
Adult alewife numbers ?Comment:The average population returning to Bride Lake from 2003 to 2008 was nearly 90,000 fish, while in 1966 and 1967, the population averaged over 160,000 fish. The different values for this variable are part of the basis for different runs. |
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| Not applicable | |
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Min Value
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Not applicable |
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Max Value
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Not applicable |
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Other Value Type
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Single Observation or Parameter Value |
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Other Value
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Values vary by run; view runs to see values |
Variable Variability and Sensitivity
Adult alewife numbers ?Comment:The average population returning to Bride Lake from 2003 to 2008 was nearly 90,000 fish, while in 1966 and 1967, the population averaged over 160,000 fish. The different values for this variable are part of the basis for different runs. |
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Variability Expression Given?
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Not recorded for Constant or Parameter Variables |
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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 recorded for Constant or Parameter Variables |
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Variability Expression Used in Modeling?
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Not recorded for Constant or Parameter Variables |
Variable Operational Validation (Response Variables only)
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Variable ID
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Validated?
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Validation Approach (within, between, etc.)
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Validation Quality (Qual/Quant)
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Validation Method (Stat/Deviance)
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Validation Metric
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Validation Value
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Validation Units
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Use of Measured Response Data
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