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: (EM-905)
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EM-905: Quantifying the loss of a marine ecosystem service: Filtration by the Eastern Oyster in US estuaries
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EM Identity and Description
| EM-905 | |
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Document Author
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zu Ermgassen, S. E., M, D. Spalding, R. E. Grizzle, and R. D. Brumbaugh |
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Document Year
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2013 |
Variable General Info
Water volume filtered by oysters ?Comment:"We collated monthly mean water temperature data for all 13 estuaries from NOAA, USGS, and the National Estuarine Research Reserve network. We then applied our field based filtration model to the present and historic extent, and the mean density of both size classes of oyster in each estuary, to determine the change in this ecosystem service over time." |
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Variable ID
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22245 |
| Not reported | |
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Qualitative-Quantitative
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Quantitative (Cardinal Only) |
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Cardinal-Ordinal
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Cardinal |
| 1000 m^3 hr-1 |
Variable Typology
Water volume filtered by oysters ?Comment:"We collated monthly mean water temperature data for all 13 estuaries from NOAA, USGS, and the National Estuarine Research Reserve network. We then applied our field based filtration model to the present and historic extent, and the mean density of both size classes of oyster in each estuary, to determine the change in this ecosystem service over time." |
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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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--CICES categories: Ecosystem goods and services - or landscape-level indices of suitability to supply EGS |
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----Suitability to supply regulation & maintenance services-Mediation of wastes |
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------Filtration/sequestration/storage/accumulation by micro-organisms, algae, plants, and animals |
Variable Spatial Characteristics
Water volume filtered by oysters ?Comment:"We collated monthly mean water temperature data for all 13 estuaries from NOAA, USGS, and the National Estuarine Research Reserve network. We then applied our field based filtration model to the present and historic extent, and the mean density of both size classes of oyster in each estuary, to determine the change in this ecosystem service over time." |
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Spatial Extent Area
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10,000-100,000 km^2 |
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Spatially Distributed?
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Yes |
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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
Water volume filtered by oysters ?Comment:"We collated monthly mean water temperature data for all 13 estuaries from NOAA, USGS, and the National Estuarine Research Reserve network. We then applied our field based filtration model to the present and historic extent, and the mean density of both size classes of oyster in each estuary, to determine the change in this ecosystem service over time." |
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Temporal Extent
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1880-1910; 2000-2010 |
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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
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Not applicable |
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Temporal Grain Size Units
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Not applicable |
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Temporal Density
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Not applicable |
Variable Values
Water volume filtered by oysters ?Comment:"We collated monthly mean water temperature data for all 13 estuaries from NOAA, USGS, and the National Estuarine Research Reserve network. We then applied our field based filtration model to the present and historic extent, and the mean density of both size classes of oyster in each estuary, to determine the change in this ecosystem service over time." |
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| Not reported | |
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Min Value
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Not reported |
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Max Value
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Not reported |
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Other Value Type
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Single Observation or Parameter Value |
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Other Value
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Varies by run; view runs to see values |
Variable Variability and Sensitivity
Water volume filtered by oysters ?Comment:"We collated monthly mean water temperature data for all 13 estuaries from NOAA, USGS, and the National Estuarine Research Reserve network. We then applied our field based filtration model to the present and historic extent, and the mean density of both size classes of oyster in each estuary, to determine the change in this ecosystem service over time." |
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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)
| Water volume filtered by oysters | |
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Variable ID
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22245 |
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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 |