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Variables Details
: (EM-12)
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EM-12: Policy research using agent-based modeling to assess future impacts of urban expansion into farmlands and forests
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EM Identity and Description
| EM-12 | |
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Document Author
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Guzy, M. R., Smith, C. L. , Bolte, J. P., Hulse, D. W. and Gregory, S. V. |
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Document Year
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2008 |
Variable General Info
Overall ecosystem health ?Comment:The major ecosystem health aspects measured by Evoland are computed through four submodels; 1) fish species richness and fish number, 2) floodplain habitat, 3) small stream index of biotic integrity (IBI), and 4) upslope habitat. Each submodel is restricted to different zones, partially overlapping, covering the entire study area. |
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Variable ID
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100 |
| Eco-health (EH) | |
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Qualitative-Quantitative
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Quantitative (Cardinal Only) |
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Cardinal-Ordinal
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Cardinal |
| unitless |
Variable Typology
Overall ecosystem health ?Comment:The major ecosystem health aspects measured by Evoland are computed through four submodels; 1) fish species richness and fish number, 2) floodplain habitat, 3) small stream index of biotic integrity (IBI), and 4) upslope habitat. Each submodel is restricted to different zones, partially overlapping, covering the entire study area. |
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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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--Ecosystem- or landscape-level metrics or indices of ecological condition, rarity or vulnerability |
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----Other, multiple, unspecified or unclear |
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Variable Spatial Characteristics
Overall ecosystem health ?Comment:The major ecosystem health aspects measured by Evoland are computed through four submodels; 1) fish species richness and fish number, 2) floodplain habitat, 3) small stream index of biotic integrity (IBI), and 4) upslope habitat. Each submodel is restricted to different zones, partially overlapping, covering the entire study area. |
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Spatial Extent Area
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10-100 km^2 ?Comment:Response is summarized across the study area. |
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Spatially Distributed?
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No |
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Observations Spatially Patterned?
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Not applicable |
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Spatial Grain Type
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Not applicable |
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Spatial Grain Size
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Not applicable |
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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
Overall ecosystem health ?Comment:The major ecosystem health aspects measured by Evoland are computed through four submodels; 1) fish species richness and fish number, 2) floodplain habitat, 3) small stream index of biotic integrity (IBI), and 4) upslope habitat. Each submodel is restricted to different zones, partially overlapping, covering the entire study area. |
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Temporal Extent
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1990-2050 ?Comment:Response results provided for applied scenarios in the year 2050 and compared to initial conditions. |
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Temporally Distributed?
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Yes |
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Regular Temporal Grain?
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Yes |
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Temporal Grain Size Value
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2 |
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Temporal Grain Size Units
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Year |
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Temporal Density
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Not applicable |
Variable Values
Overall ecosystem health ?Comment:The major ecosystem health aspects measured by Evoland are computed through four submodels; 1) fish species richness and fish number, 2) floodplain habitat, 3) small stream index of biotic integrity (IBI), and 4) upslope habitat. Each submodel is restricted to different zones, partially overlapping, covering the entire study area. |
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Not applicable ?Comment:Evaluative metrics of Eco-health resiliance are scaled from -3.0 to +3.0, with scores near 3 indicating that the expected maximum potential has almost been obtained. |
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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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Parameter value |
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Other Value
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Varies by Run; view Runs to see values |
Variable Variability and Sensitivity
Overall ecosystem health ?Comment:The major ecosystem health aspects measured by Evoland are computed through four submodels; 1) fish species richness and fish number, 2) floodplain habitat, 3) small stream index of biotic integrity (IBI), and 4) upslope habitat. Each submodel is restricted to different zones, partially overlapping, covering the entire study area. |
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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)
| Overall ecosystem health | |
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Variable ID
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100 |
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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 |