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EM: Alewife derived nutrients in stream food web, Connecticut, USA (EM-667)
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EM Identity and Description
EM Identification
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EM ID
em.detail.idHelp
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EM-667 |
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EM Short Name
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Alewife derived nutrients, Connecticut, USA |
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EM Full Name
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Alewife derived nutrients in stream food web, Connecticut, USA |
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EM Source or Collection
em.detail.emSourceOrCollectionHelp
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None |
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EM Source Document ID
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384 |
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Document Author
em.detail.documentAuthorHelp
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Walters, A. W., R. T. Barnes, and D. M. Post |
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Document Year
em.detail.documentYearHelp
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2009 |
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Document Title
em.detail.sourceIdHelp
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Anadromous alewives (Alosa pseudoharengus) contribute marine-derived nutrients to coastal stream food webs |
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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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Annika W. Walters |
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Contact Address
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Dept. of Ecology and Evolutionary Biology, Yale University, New Haven, CT 06511, USA |
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Contact Email
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annika.walters@yale.edu |
EM Description
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Summary Description
em.detail.summaryDescriptionHelp
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ABSTRACT: "Diadromous fish are an important link between marine and freshwater food webs. Pacific salmon (Oncorhynchus spp.) strongly impact nutrient dynamics in inland waters and anadromous alewife (Alosa pseudoharengus) may play a similar ecological role along the Atlantic coast. The annual spawning migration of anadromous alewife contributes, on average, 1050 g of nitrogen and 120 g of phosphorus to Bride Brook, Connecticut, USA, through excretion and mortality each year... There was no significant effect of this nutrient influx on water chemistry, leaf decomposition, or periphyton accrual. Dam removal and fish ladder construction will allow anadromous alewife to regain access to historical freshwater spawning habitats, potentially impacting food web dynamics and nutrient cycling in coastal freshwater systems." |
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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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Alewife spawning runs typically occur Mid March - May. |
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EM Scenario Drivers
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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 (multiple runs exist) View EM Runs |
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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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Doc-383 |
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EM ID for related EM
em.detail.relatedEmEmIdHelp
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EM-661 | EM-665 | EM-666 | EM-672 | EM-674 | EM-673 |
EM Modeling Approach
EM Relationship to Time
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EM Temporal Extent
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1979-2009 |
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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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Watershed/Catchment/HUC |
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Spatial Extent Name
em.detail.extentNameHelp
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Bride Brook |
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Spatial Extent Area (Magnitude)
em.detail.extentAreaHelp
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1-10 ha |
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 ?Comment:The fish counter (for alewife numbers) was calibrated. |
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Model Goodness of Fit Reported?
em.detail.goodnessFitHelp
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No |
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Goodness of Fit (metric| value | unit)
em.detail.goodnessFitValuesHelp
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None |
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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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No |
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Model Sensitivity Analysis Reported?
em.detail.sensAnalysisHelp
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No |
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Model Sensitivity Analysis Include Interactions?
em.detail.interactionConsiderHelp
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Not applicable |
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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Marine location (Classification hierarchy: Realm > Region > Province > Ecoregion)
em.detail.relationToSpaceMarineHelp
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Centroid Lat/Long (Decimal Degree)
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Centroid Latitude
em.detail.ddLatHelp
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41.32 |
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Centroid Longitude
em.detail.ddLongHelp
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-72.24 |
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Centroid Datum
em.detail.datumHelp
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WGS84 |
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Centroid Coordinates Status
em.detail.coordinateStatusHelp
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Provided |
Environments and Scales Modeled
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EM Environmental Sub-Class
em.detail.emEnvironmentalSubclassHelp
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Rivers and Streams |
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Specific Environment Type
em.detail.specificEnvTypeHelp
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Coastal stream |
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EM Ecological Scale
em.detail.ecoScaleHelp
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Ecological scale corresponds to 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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Individual or population, within a species |
Taxonomic level and name of organisms or groups identified
taxonomyHelp
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EnviroAtlas URL
em.detail.enviroAtlasURLHelp
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| The National Hydrography Dataset (NHD) |
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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Intermediate
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Intermediate (Computed) Variables (and Units)
view details (3 variables)
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Response
em.detail.variablesResponseHelp
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Observed Response Variables (and Units)
em.detail.observedResponseHelp
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None |
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Computed Response Variables (and Units)
view details (6 variables)
em.detail.computedResponseHelp
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