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Variables Details
: (EM-105)
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EM Identity and Description
| EM-105 | |
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Document Author
variable.detail.emDocumentAuthorHelp
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Ferraro, S. P. and Cole, F. A. |
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Document Year
variable.detail.emDocumentYearHelp
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2007 |
Variable General Info
| Ecosystem engineering species density | Habitat type | Percent silt + clay (sediment) | Total organic carbon (sediment) | Year | |
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Variable ID
variable.detail.varIdHelp
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2876 | 1408 | 2873 | 2875 | 2874 |
| none | Not reported | X_1 | X_2 | none | |
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Qualitative-Quantitative
variable.detail.continuousCategoricalHelp
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Quantitative (Cardinal Only) | Qualitative (Class, Rating or Ranking) | Quantitative (Cardinal Only) | Quantitative (Cardinal Only) | Qualitative (Class, Rating or Ranking) |
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Cardinal-Ordinal
variable.detail.cardinalOrdinalHelp
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Cardinal | Non-Ordinal | Cardinal | Cardinal | Non-Ordinal |
variable ?Comment:unit changes metric based on year "ecosystem engineer density (Zostera and Spartina number shoots 0.25 m^2 in 1996 and % cover in 1998; Upogebia and Neotrypaea number burrow holes 0.25 m^2; oyster % cover)" (495) |
Not applicable | % | % | Not applicable |
Variable Typology
| Ecosystem engineering species density | Habitat type | Percent silt + clay (sediment) | Total organic carbon (sediment) | Year | |
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Predictor-Intermediate-Response
variable.detail.displayVariableTypeHelp
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Predictor |
Predictor |
Predictor |
Predictor |
Predictor |
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Predictor Variable Type
variable.detail.displayPredictorVariableTypeHelp
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Time- or Space-varying Variable |
Time- or Space-varying Variable |
Time- or Space-varying Variable |
Time- or Space-varying Variable |
Time- or Space-varying Variable |
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Response Variable Type
variable.detail.resClassHelp
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Not applicable | Not applicable | Not applicable | Not applicable | Not applicable |
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Data Source/Type
variable.detail.dataTypeHelp
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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) | Local Field/Lab Data (e.g., particular to the EM study) | 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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5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
2. Land Surface (or Water Body) Cover, Use, Substrate, or Metric |
5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
N. Not classified |
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--Biological characteristics, processes or requirements of living ecosystem components |
--Land use/land cover type or dominant habitat type |
--Physical/chemical characteristics of nonliving ecosystem components |
--Chemical (C, N, P, sediment/particulate) characteristics of ecosystem components |
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----Biological characteristics, processes or requirements of fauna |
----Habitat type designations |
----Physical/chemical characteristics of soils, substrates, rocks |
----Carbon-related characteristics of ecosystem components |
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------Benthic macroinvertebrates |
------Benthic habitat type |
------Water body bed substrate characteristics |
------Carbon presence (in terrestrial or aquatic ecosystem components) |
Variable Spatial Characteristics
| Ecosystem engineering species density | Habitat type | Percent silt + clay (sediment) | Total organic carbon (sediment) | Year | |
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Spatial Extent Area
variable.detail.spExtentHelp
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100-1000 km^2 | 100-1000 km^2 | 100-1000 km^2 | 100-1000 km^2 | 100-1000 km^2 |
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Spatially Distributed?
variable.detail.spDistributedHelp
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Yes | Yes | Yes | Yes | No |
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Observations Spatially Patterned?
variable.detail.regularSpGrainHelp
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No | No | No | No | Not applicable |
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Spatial Grain Type
variable.detail.spGrainTypeHelp
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Not applicable | Not applicable | Not applicable | Not applicable | Not applicable |
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Spatial Grain Size
variable.detail.spGrainSizeHelp
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Not applicable | Not applicable | Not applicable | Not applicable | Not applicable |
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Spatial Density
variable.detail.spDensityHelp
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38 observations in 1996, 90 in 1998 | Not applicable | 38 observations in 1996, 90 in 1998 | 38 observations in 1996; 90 in 1998 | Not applicable |
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EnviroAtlas URL
variable.detail.enviroAtlasURLHelp
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Variable Temporal Characteristics
| Ecosystem engineering species density | Habitat type | Percent silt + clay (sediment) | Total organic carbon (sediment) | Year | |
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Temporal Extent
variable.detail.tempExtentHelp
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1996,1998 | 1996, 1998 | 1996,1998 | 1996,1998 | 1996,1998 |
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Temporally Distributed?
variable.detail.tempDistributedHelp
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Yes | Yes | Yes | Yes | Yes |
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Regular Temporal Grain?
variable.detail.regularTempGrainHelp
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No | No | No | No | No |
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Temporal Grain Size Value
variable.detail.tempGrainSizeValHelp
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Not applicable | Not applicable | Not applicable | Not applicable | Not applicable |
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Temporal Grain Size Units
variable.detail.tempGrainSizeUnitHelp
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Not applicable | Not applicable | Not applicable | Not applicable | Not applicable |
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Temporal Density
variable.detail.tempDensityHelp
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2 observations over 3 years (1996-1998) | Not applicable | 2 oobservations over 3 years | 2 observations over 3 years (1996-1998) | two observations over 3 years (1996-1998) |
Variable Values
| Ecosystem engineering species density | Habitat type | Percent silt + clay (sediment) | Total organic carbon (sediment) | Year | |
| Not reported | Not applicable | % | % | Not applicable | |
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Min Value
variable.detail.minEstHelp
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not reported | Not applicable | .83 | 0.03 | Not applicable |
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Max Value
variable.detail.estHelp
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not reported | Not applicable | 98 | 4.7 | Not applicable |
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Other Value Type
variable.detail.natureOtherEstHelp
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Not applicable | Not applicable | Not applicable | Not applicable | Not applicable |
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Other Value
variable.detail.otherEstHelp
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not reported | Not applicable | not reported | not reported | Not applicable |
Variable Variability and Sensitivity
| Ecosystem engineering species density | Habitat type | Percent silt + clay (sediment) | Total organic carbon (sediment) | Year | |
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Variability Expression Given?
variable.detail.variabilityExpHelp
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No | No | No | No | Not applicable |
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Variability Metric
variable.detail.variabilityMetricHelp
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None | None | None | None | None |
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Variability Value
variable.detail.variabilityValueHelp
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None | None | None | None | None |
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Variability Units
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None | None | None | None | None |
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Resampling Used?
variable.detail.bootstrappingHelp
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Not applicable | Not applicable | Not applicable | Not applicable | Not applicable |
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Variability Expression Used in Modeling?
variable.detail.variabilityUsedHelp
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Not applicable | Not applicable | Not applicable | Not applicable | Not applicable |
Variable Operational Validation (Response Variables only)
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Variable ID
variable.detail.varIdHelp
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Validated?
variable.detail.resValidatedHelp
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Validation Approach (within, between, etc.)
variable.detail.validationApproachHelp
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Validation Quality (Qual/Quant)
variable.detail.validationQualityHelp
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Validation Method (Stat/Deviance)
variable.detail.validationMethodHelp
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Validation Metric
variable.detail.validationMetricHelp
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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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