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EM: Nitrogen removal by wetlands as a function of loading, Contiguous USA (EM-196)
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EM Identity and Description
EM Identification
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EM ID
em.detail.idHelp
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EM-196 |
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EM Short Name
em.detail.shortNameHelp
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N removal by wetlands, Contiguous USA |
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EM Full Name
em.detail.fullNameHelp
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Nitrogen removal by wetlands as a function of loading, Contiguous USA |
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EM Source or Collection
em.detail.emSourceOrCollectionHelp
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US EPA |
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EM Source Document ID
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63 |
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Document Author
em.detail.documentAuthorHelp
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Jordan, S., Stoffer, J. and Nestlerode, J. |
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Document Year
em.detail.documentYearHelp
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2011 |
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Document Title
em.detail.sourceIdHelp
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Wetlands as sinks for reactive nitrogen at continental and global scales: A meta-analysis |
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Document Status
em.detail.statusCategoryHelp
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Peer reviewed and published |
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Comments on Status
em.detail.commentsOnStatusHelp
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Published journal manuscript |
Software and Access
| Not applicable | |
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Contact Name
em.detail.contactNameHelp
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Steve Jordan |
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Contact Address
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Gulf Ecology Division U.S. Environmental Protection Agency, 1 Sabine Island Drive, Gulf Breeze, Florida 32561 |
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Contact Email
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steve.jordan@epa.gov |
EM Description
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Summary Description
em.detail.summaryDescriptionHelp
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ABSTRACT: "We compiled published data from wetland studies worldwide to estimate total Nr removal and to evaluate factors that influence removal rates. Over several orders of magnitude in wetland area and Nr loading rates, there is a positive, near-linear relationship between Nr removal and Nr loading. The linear model (null hypothesis) explains the data better than either a model of declining Nr removal efficiency with increasing Nr loading, or a Michaelis–Menten (saturation) model." |
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Specific Policy or Decision Context Cited
em.detail.policyDecisionContextHelp
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None identified |
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Biophysical Context
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Estuarine Emergent; Agricultural; Salt Marsh; Palustrine Emergent; Palustrine Forested |
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EM Scenario Drivers
em.detail.scenarioDriverHelp
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No scenarios presented |
EM Relationship to Other EMs or Applications
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Method Only, Application of Method or Model Run
em.detail.methodOrAppHelp
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Method + Application |
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New or Pre-existing EM?
em.detail.newOrExistHelp
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New or revised model |
Related EMs (for example, other versions or derivations of this EM) described in ESML
em.detail.relatedEmHelp
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Document ID for related EM
em.detail.relatedEmDocumentIdHelp
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None |
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EM ID for related EM
em.detail.relatedEmEmIdHelp
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None |
EM Modeling Approach
EM Relationship to Time
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EM Temporal Extent
em.detail.tempExtentHelp
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2004 |
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EM Time Dependence
em.detail.timeDependencyHelp
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time-stationary |
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EM Time Reference (Future/Past)
em.detail.futurePastHelp
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Not applicable |
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EM Time Continuity
em.detail.continueDiscreteHelp
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Not applicable |
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EM Temporal Grain Size Value
em.detail.tempGrainSizeHelp
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Not applicable |
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EM Temporal Grain Size Unit
em.detail.tempGrainSizeUnitHelp
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Not applicable |
EM Spatial Extent
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Bounding Type
em.detail.boundingTypeHelp
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Multiple unrelated locations (e.g., meta-analysis) |
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Spatial Extent Name
em.detail.extentNameHelp
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Contiguous U.S. |
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Spatial Extent Area (Magnitude)
em.detail.extentAreaHelp
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100,000-1,000,000 km^2 |
Spatial Distribution of Computations
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EM Spatial Distribution
em.detail.distributeLumpHelp
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spatially lumped (in all cases) |
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Spatial Grain Type
em.detail.spGrainTypeHelp
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Not applicable |
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Spatial Grain Size
em.detail.spGrainSizeHelp
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Not applicable |
EM Structure and Computation Approach
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EM Computational Approach
em.detail.emComputationalApproachHelp
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Analytic |
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EM Determinism
em.detail.deterStochHelp
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deterministic |
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Statistical Estimation of EM
em.detail.statisticalEstimationHelp
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Model Checking Procedures Used
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Model Calibration Reported?
em.detail.calibrationHelp
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Yes |
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Model Goodness of Fit Reported?
em.detail.goodnessFitHelp
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Yes |
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Goodness of Fit (metric| value | unit)
em.detail.goodnessFitValuesHelp
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Model Operational Validation Reported?
em.detail.validationHelp
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No |
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Model Uncertainty Analysis Reported?
em.detail.uncertaintyAnalysisHelp
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Yes |
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Model Sensitivity Analysis Reported?
em.detail.sensAnalysisHelp
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Yes |
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Model Sensitivity Analysis Include Interactions?
em.detail.interactionConsiderHelp
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Yes |
EM Locations, Environments, Ecology
Location of EM Application
Terrestrial location (Classification hierarchy: Continent > Country > U.S. State [United States only])
em.detail.relationToSpaceTerrestrialHelp
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| None |
Marine location (Classification hierarchy: Realm > Region > Province > Ecoregion)
em.detail.relationToSpaceMarineHelp
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| None |
Centroid Lat/Long (Decimal Degree)
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Centroid Latitude
em.detail.ddLatHelp
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-9999 |
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Centroid Longitude
em.detail.ddLongHelp
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-9999 |
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Centroid Datum
em.detail.datumHelp
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None provided |
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Centroid Coordinates Status
em.detail.coordinateStatusHelp
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Not applicable |
Environments and Scales Modeled
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EM Environmental Sub-Class
em.detail.emEnvironmentalSubclassHelp
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Inland Wetlands | Near Coastal Marine and Estuarine |
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Specific Environment Type
em.detail.specificEnvTypeHelp
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Wetlands (multiple types) |
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EM Ecological Scale
em.detail.ecoScaleHelp
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Ecological scale is finer than that of the Environmental Sub-class |
Scale and taxa of organisms modeled
Scale of differentiation of organisms modeled
em.detail.nameOfOrgsOrGroupsHelp
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EM Organismal Scale
em.detail.orgScaleHelp
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Not applicable |
Taxonomic level and name of organisms or groups identified
taxonomyHelp
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| None Available |
EnviroAtlas URL
em.detail.enviroAtlasURLHelp
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| National Hydrography Dataset Plus (NHD PlusV2), Total Annual Nitrogen Deposition |
EM Ecosystem Goods and Services (EGS) potentially modeled, by classification system
CICES v 4.3 - Common International Classification of Ecosystem Services (Section > Division > Group > Class)
em.detail.cicesHelp
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(Environmental Subclass > Ecological End-Product (EEP) > EEP Subclass > EEP Modifier)
fegs2Help
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EM Variable Names (and Units)
Predictor
em.detail.variablesPredictorHelp
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Driving Variables (and Units)
view details (7 variables)
em.detail.drivingVariableHelp
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Constant or Factor Variables (and Units)
em.detail.constantFactorVariableHelp
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None |
Intermediate
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Intermediate (Computed) Variables (and Units)
em.detail.intermediateVariableHelp
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None |
Response
em.detail.variablesResponseHelp
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Observed Response Variables (and Units)
view details (1 variable)
em.detail.observedResponseHelp
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Computed Response Variables (and Units)
em.detail.computedResponseHelp
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None |