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: (EM-632)
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EM-632: Assessment of environmental services of CREP wetlands in Iowa and the midwestern corn belt
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EM Identity and Description
| EM-632 | |
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Document Author
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Otis, D. L., W. G. Crumpton, D. Green, A. K. Loan-Wilsey, R. L. McNeely, K. L. Kane, R. Johnson, T. Cooper, and M. Vandever |
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Document Year
variable.detail.emDocumentYearHelp
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2010 |
Variable General Info
Natural log of wetland size ?Comment:For each of 27 separate wetland sites of varying size, GIS-based land cover developed from 2002 Landsat imagery was used to classify land cover. Polygon coverages of the CREP wetlands and buffers were aquired from the Iowa Department of Agriculture and Land Stewardship (2007) and added to the 2002 land cover. |
Waterfowl species ?Comment:Six species of ducks were modeled; Mallard (Anas platyrhynchos), Blue-winged Teal (Anas discors), Northern Shoveler (Anas clypeata), Gadwall (Anas strepera), Northern Pintail (Anas acuta), and Wood Duck (Aix sponsa). Species is a class variable forming the basis for six model runs. |
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Variable ID
variable.detail.varIdHelp
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15028 | 15023 |
| x | Not reported | |
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Qualitative-Quantitative
variable.detail.continuousCategoricalHelp
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Quantitative (Cardinal Only) | Qualitative (Class, Rating or Ranking) |
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Cardinal-Ordinal
variable.detail.cardinalOrdinalHelp
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Cardinal | Non-Ordinal |
| Not reported | Not applicable |
Variable Typology
Natural log of wetland size ?Comment:For each of 27 separate wetland sites of varying size, GIS-based land cover developed from 2002 Landsat imagery was used to classify land cover. Polygon coverages of the CREP wetlands and buffers were aquired from the Iowa Department of Agriculture and Land Stewardship (2007) and added to the 2002 land cover. |
Waterfowl species ?Comment:Six species of ducks were modeled; Mallard (Anas platyrhynchos), Blue-winged Teal (Anas discors), Northern Shoveler (Anas clypeata), Gadwall (Anas strepera), Northern Pintail (Anas acuta), and Wood Duck (Aix sponsa). Species is a class variable forming the basis for six model runs. |
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Predictor-Intermediate-Response
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Predictor |
Predictor |
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Predictor Variable Type
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Time- or Space-varying Variable |
Time- or Space-varying Variable |
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Response Variable Type
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Not applicable | Not applicable |
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Data Source/Type
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Local field/Lab data (e.g., particular to the EM study) | Local field/Lab data (e.g., particular to the EM study) |
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Variable Classification Hierarchy
variable.detail.vchLevel1Help
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2. Land Surface (or Water Body) Cover, Use, Substrate, or Metric |
5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
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--Spatial resolution or extent of cell, pixel, polygon |
--Biological characteristics, processes or requirements of living ecosystem components |
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----Biological characteristics, processes or requirements of fauna |
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------Bird |
Variable Spatial Characteristics
Natural log of wetland size ?Comment:For each of 27 separate wetland sites of varying size, GIS-based land cover developed from 2002 Landsat imagery was used to classify land cover. Polygon coverages of the CREP wetlands and buffers were aquired from the Iowa Department of Agriculture and Land Stewardship (2007) and added to the 2002 land cover. |
Waterfowl species ?Comment:Six species of ducks were modeled; Mallard (Anas platyrhynchos), Blue-winged Teal (Anas discors), Northern Shoveler (Anas clypeata), Gadwall (Anas strepera), Northern Pintail (Anas acuta), and Wood Duck (Aix sponsa). Species is a class variable forming the basis for six model runs. |
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Spatial Extent Area
variable.detail.spExtentHelp
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1-10 km^2 ?Comment:For each of 27 separate wetland sites of varying size, GIS-based land cover developed from 2002 Landsat imagery was used to classify land cover at a 15 m2 pixel size. Polygon coverages of the CREP wetlands and buffers were aquired from the Iowa Department of Agriculture and Land Stewardship (2007) and added to the 2002 land cover. |
1-10 km^2 |
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Spatially Distributed?
variable.detail.spDistributedHelp
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Yes | No |
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Observations Spatially Patterned?
variable.detail.regularSpGrainHelp
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Yes | Not applicable |
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Spatial Grain Type
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Area, for pixel or radial feature | Not applicable |
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Spatial Grain Size
variable.detail.spGrainSizeHelp
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15 m2 | Not applicable |
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Spatial Density
variable.detail.spDensityHelp
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Not applicable | Not applicable |
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EnviroAtlas URL
variable.detail.enviroAtlasURLHelp
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Variable Temporal Characteristics
Natural log of wetland size ?Comment:For each of 27 separate wetland sites of varying size, GIS-based land cover developed from 2002 Landsat imagery was used to classify land cover. Polygon coverages of the CREP wetlands and buffers were aquired from the Iowa Department of Agriculture and Land Stewardship (2007) and added to the 2002 land cover. |
Waterfowl species ?Comment:Six species of ducks were modeled; Mallard (Anas platyrhynchos), Blue-winged Teal (Anas discors), Northern Shoveler (Anas clypeata), Gadwall (Anas strepera), Northern Pintail (Anas acuta), and Wood Duck (Aix sponsa). Species is a class variable forming the basis for six model runs. |
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Temporal Extent
variable.detail.tempExtentHelp
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2002-2007 | 2002-2007 |
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Temporally Distributed?
variable.detail.tempDistributedHelp
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Not applicable | Not applicable |
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Regular Temporal Grain?
variable.detail.regularTempGrainHelp
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Not applicable | Not applicable |
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Temporal Grain Size Value
variable.detail.tempGrainSizeValHelp
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Not applicable | Not applicable |
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Temporal Grain Size Units
variable.detail.tempGrainSizeUnitHelp
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Not applicable | Not applicable |
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Temporal Density
variable.detail.tempDensityHelp
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Not applicable | Not applicable |
Variable Values
Natural log of wetland size ?Comment:For each of 27 separate wetland sites of varying size, GIS-based land cover developed from 2002 Landsat imagery was used to classify land cover. Polygon coverages of the CREP wetlands and buffers were aquired from the Iowa Department of Agriculture and Land Stewardship (2007) and added to the 2002 land cover. |
Waterfowl species ?Comment:Six species of ducks were modeled; Mallard (Anas platyrhynchos), Blue-winged Teal (Anas discors), Northern Shoveler (Anas clypeata), Gadwall (Anas strepera), Northern Pintail (Anas acuta), and Wood Duck (Aix sponsa). Species is a class variable forming the basis for six model runs. |
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| Not reported | Not applicable | |
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Min Value
variable.detail.minEstHelp
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Not reported | Not applicable |
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Max Value
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Not reported | Not applicable |
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Other Value Type
variable.detail.natureOtherEstHelp
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Not applicable | Not applicable |
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Other Value
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Not reported | Not applicable |
Variable Variability and Sensitivity
Natural log of wetland size ?Comment:For each of 27 separate wetland sites of varying size, GIS-based land cover developed from 2002 Landsat imagery was used to classify land cover. Polygon coverages of the CREP wetlands and buffers were aquired from the Iowa Department of Agriculture and Land Stewardship (2007) and added to the 2002 land cover. |
Waterfowl species ?Comment:Six species of ducks were modeled; Mallard (Anas platyrhynchos), Blue-winged Teal (Anas discors), Northern Shoveler (Anas clypeata), Gadwall (Anas strepera), Northern Pintail (Anas acuta), and Wood Duck (Aix sponsa). Species is a class variable forming the basis for six model runs. |
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Variability Expression Given?
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No | Not applicable |
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Variability Metric
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None | None |
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Variability Value
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None | None |
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Variability Units
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None | None |
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Resampling Used?
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Not applicable | Not applicable |
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Variability Expression Used in Modeling?
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Not applicable | Not applicable |
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
variable.detail.validationValHelp
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Validation Units
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Use of Measured Response Data
variable.detail.measuredResponseDataHelp
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