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Variables Details
: (EM-423)
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EM Identity and Description
| EM-423 | |
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Document Author
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Amelia Smith, Susan Harrell Yee, Marc Russell, Jill Awkerman and William S. Fisher |
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Document Year
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2017 |
Variable General Info
Percent canopy cover ?Comment:From: USGS, 2013. “100-Meter Resolution Tree Canopy of Puerto Rico and the U. S. Virgin Islands,” |
Pollutant concentration | Typical deposition velocity | Watershed boundary | Mean pollutant removal rate for Lower Guanica watersheds | Mean pollutant removal rate for Upper Guanica watersheds | |
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Variable ID
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8799 | 8801 | 8800 | 9476 | 8870 | 8869 |
| Not reported | Not reported | Not reported | Not reported | Not reported | Not reported | |
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Qualitative-Quantitative
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Quantitative (Cardinal Only) | Quantitative (Cardinal Only) | Quantitative (Cardinal Only) | Qualitative (Class, Rating or Ranking) | Quantitative (Cardinal Only) | Quantitative (Cardinal Only) |
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Cardinal-Ordinal
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Cardinal | Cardinal | Cardinal | Non-Ordinal | Cardinal | Cardinal |
| % | g m^-3 | cm s^-1 | Not applicable | g m^-2 s^-1 | g m^-2 s^-1 |
Variable Typology
Percent canopy cover ?Comment:From: USGS, 2013. “100-Meter Resolution Tree Canopy of Puerto Rico and the U. S. Virgin Islands,” |
Pollutant concentration | Typical deposition velocity | Watershed boundary | Mean pollutant removal rate for Lower Guanica watersheds | Mean pollutant removal rate for Upper Guanica watersheds | |
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Predictor-Intermediate-Response
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Predictor |
Predictor |
Predictor |
Predictor |
Response |
Response |
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Predictor Variable Type
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Time- or Space-varying Variable |
Constant or Parameter | Constant or Parameter | Constant or Parameter | Not applicable | Not applicable |
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Response Variable Type
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Not applicable | Not applicable | Not applicable | Not applicable |
Computed Variable |
Computed Variable |
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Data Source/Type
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Map or database (e.g., wide coverage, wide availability, measured or modeled) ?Comment:From: USGS, 2013. “100-Meter Resolution Tree Canopy of Puerto Rico and the U. S. Virgin Islands,” |
Local field/Lab data (e.g., particular to the EM study) | Transferred Values (e.g., from literature; transferred spatially, temporally or across scales) | Map or database (e.g., wide coverage, wide availability, measured or modeled) | Not applicable | Not applicable |
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Variable Classification Hierarchy
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5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
4. Human-Produced Stressor or Enhancer of Ecosystem Goods and Services Production |
4. Human-Produced Stressor or Enhancer of Ecosystem Goods and Services Production |
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 |
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--Biological characteristics, processes or requirements of living ecosystem components |
--Human-caused release, presence or characteristics of polluting substances |
--Human-caused release, presence or characteristics of polluting substances |
--Demarcation of watershed, channel, floodplain, shore, coastline, flowline |
--CICES categories: Ecosystem goods and services - or landscape-level indices of suitability to supply EGS |
--CICES categories: Ecosystem goods and services - or landscape-level indices of suitability to supply EGS |
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----Biological characteristics, processes or requirements of flora and fungi |
----Release, presence or characteristics of nonpesticide anthropogenic toxic contaminants |
----Release, presence or characteristics of nonpesticide anthropogenic toxic contaminants |
----Watershed demarcation or dimension |
----Suitability to supply regulation & maintenance services-Mediation of wastes |
----Suitability to supply regulation & maintenance services-Mediation of wastes |
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------Cover characteristics (canopy cover, herbaceous cover or leaf area) |
------Filtration/sequestration/storage/accumulation by micro-organisms, algae, plants, and animals |
------Filtration/sequestration/storage/accumulation by micro-organisms, algae, plants, and animals |
Variable Spatial Characteristics
Percent canopy cover ?Comment:From: USGS, 2013. “100-Meter Resolution Tree Canopy of Puerto Rico and the U. S. Virgin Islands,” |
Pollutant concentration | Typical deposition velocity | Watershed boundary | Mean pollutant removal rate for Lower Guanica watersheds | Mean pollutant removal rate for Upper Guanica watersheds | |
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Spatial Extent Area
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1000-10,000 km^2. | Not recorded for Constant or Factor Variables | Not recorded for Constant or Factor Variables | 1000-10,000 km^2. | 1000-10,000 km^2. | 1000-10,000 km^2. |
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Spatially Distributed?
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Yes | Not recorded for Constant or Factor Variables | Not recorded for Constant or Factor Variables | Yes | Yes | Yes |
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Observations Spatially Patterned?
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Yes | Not recorded for Constant or Factor Variables | Not recorded for Constant or Factor Variables | No | No | No |
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Spatial Grain Type
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area, for pixel or radial feature | Not recorded for Constant or Factor Variables | Not recorded for Constant or Factor Variables | Not applicable | Not applicable | Not applicable |
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Spatial Grain Size
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100 m x 100 m | Not recorded for Constant or Factor Variables | Not recorded for Constant or Factor Variables | Not applicable | Not applicable | Not applicable |
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Spatial Density
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Not applicable | Not recorded for Constant or Factor Variables | Not recorded for Constant or Factor Variables | HUC10 watersheds | Lower portion of Guanica study area | Upper portion of Guanica study area |
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EnviroAtlas URL
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The Watershed Boundary Dataset (WBD) |
Variable Temporal Characteristics
Percent canopy cover ?Comment:From: USGS, 2013. “100-Meter Resolution Tree Canopy of Puerto Rico and the U. S. Virgin Islands,” |
Pollutant concentration | Typical deposition velocity | Watershed boundary | Mean pollutant removal rate for Lower Guanica watersheds | Mean pollutant removal rate for Upper Guanica watersheds | |
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Temporal Extent
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2013 | Not recorded for Constant or Factor Variables | Not recorded for Constant or Factor Variables | 2013 | 2013 | 2013 |
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Temporally Distributed?
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Not applicable | Not recorded for Constant or Factor Variables | Not recorded for Constant or Factor Variables | Not applicable | No | No |
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Regular Temporal Grain?
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Not applicable | Not recorded for Constant or Factor Variables | Not recorded for Constant or Factor Variables | Not applicable | Not applicable | Not applicable |
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Temporal Grain Size Value
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Not applicable | Not recorded for Constant or Factor Variables | Not recorded for Constant or Factor Variables | Not applicable | Not applicable | Not applicable |
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Temporal Grain Size Units
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Not applicable | Not recorded for Constant or Factor Variables | Not recorded for Constant or Factor Variables | Not applicable | Not applicable | Not applicable |
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Temporal Density
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Not applicable | Not recorded for Constant or Factor Variables | Not recorded for Constant or Factor Variables | Not applicable | Not applicable | Not applicable |
Variable Values
Percent canopy cover ?Comment:From: USGS, 2013. “100-Meter Resolution Tree Canopy of Puerto Rico and the U. S. Virgin Islands,” |
Pollutant concentration | Typical deposition velocity | Watershed boundary | Mean pollutant removal rate for Lower Guanica watersheds | Mean pollutant removal rate for Upper Guanica watersheds | |
| Not reported | Not applicable | Not applicable | Not applicable | Not reported | Not reported | |
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Min Value
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Not reported | Not applicable | Not applicable | Not applicable | Not reported | Not reported |
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Max Value
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Not reported | Not applicable | Not applicable | Not applicable | Not reported | Not reported |
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Other Value Type
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Not applicable | Single Observation or Parameter Value | Single Observation or Parameter Value | Not applicable | Mean | Mean |
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Other Value
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Not reported | 1 | 1.25 | Not applicable | 25.55 | 59.86 |
Variable Variability and Sensitivity
Percent canopy cover ?Comment:From: USGS, 2013. “100-Meter Resolution Tree Canopy of Puerto Rico and the U. S. Virgin Islands,” |
Pollutant concentration | Typical deposition velocity | Watershed boundary | Mean pollutant removal rate for Lower Guanica watersheds | Mean pollutant removal rate for Upper Guanica watersheds | |
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Variability Expression Given?
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No | Not recorded for Constant or Factor Variables | Not recorded for Constant or Factor Variables | Not applicable | No | No |
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Variability Metric
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None | None | None | None | None | None |
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Variability Value
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None | None | None | None | None | None |
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Variability Units
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None | None | None | None | None | None |
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Resampling Used?
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Not applicable | Not recorded for Constant or Factor Variables | Not recorded for Constant or Factor Variables | Not applicable | Not applicable | Not applicable |
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Variability Expression Used in Modeling?
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Not applicable | Not recorded for Constant or Factor Variables | Not recorded for Constant or Factor Variables | Not applicable | Not applicable | Not applicable |
Variable Operational Validation (Response Variables only)
| Mean pollutant removal rate for Lower Guanica watersheds | Mean pollutant removal rate for Upper Guanica watersheds | |
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Variable ID
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8870 | 8869 |
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Validated?
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Not applicable | Not applicable |
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Validation Approach (within, between, etc.)
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None | None |
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Validation Quality (Qual/Quant)
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None | None |
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Validation Method (Stat/Deviance)
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None | None |
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Validation Metric
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None | None |
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Validation Value
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None | None |
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Validation Units
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None | None |
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Use of Measured Response Data
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None | None |