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Variables Details
: (EM-653)
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EM Identity and Description
| EM-653 | |
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Document Author
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Cordell H. K., V. Heboyan, F. Santos, J. C. Bergstrom |
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Document Year
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2011 |
Variable General Info
Percent wetland ?Comment:Lands transitional between terrestrial and aquatic systems where the water table is usually at or near the surface or the land is covered by shallow water. For purposes of this classification wetlands must have one or more of the following three attributes: (1) at least periodically, the land supports predominantly hydrophytes; (2) the substrate is predominantly undrained hydric soil; and (3) the substrate is nonsoil and is saturated with water or covered by shallow water at some time during the growing season of each year (Cowardin, L M , Carter, V Golet, F C LaRoe, E T 1979 Classification of wetlands and deepwater habitats of the United States FWS/OBS-79/31 U S Department of the Interior, Fish and Wildlife Service). |
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Variable ID
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15293 |
| pwetland | |
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Qualitative-Quantitative
variable.detail.continuousCategoricalHelp
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Quantitative (Cardinal Only) |
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Cardinal-Ordinal
variable.detail.cardinalOrdinalHelp
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Cardinal |
| % |
Variable Typology
Percent wetland ?Comment:Lands transitional between terrestrial and aquatic systems where the water table is usually at or near the surface or the land is covered by shallow water. For purposes of this classification wetlands must have one or more of the following three attributes: (1) at least periodically, the land supports predominantly hydrophytes; (2) the substrate is predominantly undrained hydric soil; and (3) the substrate is nonsoil and is saturated with water or covered by shallow water at some time during the growing season of each year (Cowardin, L M , Carter, V Golet, F C LaRoe, E T 1979 Classification of wetlands and deepwater habitats of the United States FWS/OBS-79/31 U S Department of the Interior, Fish and Wildlife Service). |
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Predictor-Intermediate-Response
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Predictor |
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Predictor Variable Type
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Time- or Space-varying Variable |
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Response Variable Type
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Not applicable |
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Data Source/Type
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Map or database (e.g., wide coverage, wide availability, measured or modeled) |
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Variable Classification Hierarchy
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2. Land Surface (or Water Body) Cover, Use, Substrate, or Metric |
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--Land use/land cover type or dominant habitat type |
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----Inland wetlands |
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Variable Spatial Characteristics
Percent wetland ?Comment:Lands transitional between terrestrial and aquatic systems where the water table is usually at or near the surface or the land is covered by shallow water. For purposes of this classification wetlands must have one or more of the following three attributes: (1) at least periodically, the land supports predominantly hydrophytes; (2) the substrate is predominantly undrained hydric soil; and (3) the substrate is nonsoil and is saturated with water or covered by shallow water at some time during the growing season of each year (Cowardin, L M , Carter, V Golet, F C LaRoe, E T 1979 Classification of wetlands and deepwater habitats of the United States FWS/OBS-79/31 U S Department of the Interior, Fish and Wildlife Service). |
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Spatial Extent Area
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>1,000,000 km^2 |
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Spatially Distributed?
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Yes |
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Observations Spatially Patterned?
variable.detail.regularSpGrainHelp
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Yes |
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Spatial Grain Type
variable.detail.spGrainTypeHelp
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map scale, for cartographic feature |
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Spatial Grain Size
variable.detail.spGrainSizeHelp
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varies |
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Spatial Density
variable.detail.spDensityHelp
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Not applicable |
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EnviroAtlas URL
variable.detail.enviroAtlasURLHelp
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GAP Ecological Systems |
Variable Temporal Characteristics
Percent wetland ?Comment:Lands transitional between terrestrial and aquatic systems where the water table is usually at or near the surface or the land is covered by shallow water. For purposes of this classification wetlands must have one or more of the following three attributes: (1) at least periodically, the land supports predominantly hydrophytes; (2) the substrate is predominantly undrained hydric soil; and (3) the substrate is nonsoil and is saturated with water or covered by shallow water at some time during the growing season of each year (Cowardin, L M , Carter, V Golet, F C LaRoe, E T 1979 Classification of wetlands and deepwater habitats of the United States FWS/OBS-79/31 U S Department of the Interior, Fish and Wildlife Service). |
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Temporal Extent
variable.detail.tempExtentHelp
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1990-2007 |
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Temporally Distributed?
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No |
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Regular Temporal Grain?
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Not applicable |
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Temporal Grain Size Value
variable.detail.tempGrainSizeValHelp
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Not applicable |
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Temporal Grain Size Units
variable.detail.tempGrainSizeUnitHelp
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Not applicable |
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Temporal Density
variable.detail.tempDensityHelp
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Not applicable |
Variable Values
Percent wetland ?Comment:Lands transitional between terrestrial and aquatic systems where the water table is usually at or near the surface or the land is covered by shallow water. For purposes of this classification wetlands must have one or more of the following three attributes: (1) at least periodically, the land supports predominantly hydrophytes; (2) the substrate is predominantly undrained hydric soil; and (3) the substrate is nonsoil and is saturated with water or covered by shallow water at some time during the growing season of each year (Cowardin, L M , Carter, V Golet, F C LaRoe, E T 1979 Classification of wetlands and deepwater habitats of the United States FWS/OBS-79/31 U S Department of the Interior, Fish and Wildlife Service). |
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| % | |
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Min Value
variable.detail.minEstHelp
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0.01 |
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Max Value
variable.detail.estHelp
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93.19 |
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Other Value Type
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Mean |
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Other Value
variable.detail.otherEstHelp
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10.17 |
Variable Variability and Sensitivity
Percent wetland ?Comment:Lands transitional between terrestrial and aquatic systems where the water table is usually at or near the surface or the land is covered by shallow water. For purposes of this classification wetlands must have one or more of the following three attributes: (1) at least periodically, the land supports predominantly hydrophytes; (2) the substrate is predominantly undrained hydric soil; and (3) the substrate is nonsoil and is saturated with water or covered by shallow water at some time during the growing season of each year (Cowardin, L M , Carter, V Golet, F C LaRoe, E T 1979 Classification of wetlands and deepwater habitats of the United States FWS/OBS-79/31 U S Department of the Interior, Fish and Wildlife Service). |
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Variability Expression Given?
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Yes | |
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Variability Metric
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Variability Value
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Variability Units
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Resampling Used?
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No | |
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Variability Expression Used in Modeling?
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No |
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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