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EM: Alewife derived nutrients in stream food web, Connecticut, USA (EM-669)
Collapse All
Expand AllEM Identity and Description
EM Identification
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EM ID
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EM-669 |
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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
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None |
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EM Source Document ID
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384 |
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Document Author
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Walters, A. W., R. T. Barnes, and D. M. Post |
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Document Year
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2009 |
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Document Title
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Anadromous alewives (Alosa pseudoharengus) contribute marine-derived nutrients to coastal stream food webs |
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Document Status
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Peer reviewed and published |
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Comments on Status
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Published journal manuscript |
Software and Access
| Not applicable | |
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Contact Name
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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
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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
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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
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Model Run Associated with a Specific EM Application |
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New or Pre-existing EM?
em.detail.newOrExistHelp
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2005 Alewife spawning migration |
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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None |
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
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time-stationary |
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EM Time Reference (Future/Past)
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Not applicable |
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EM Time Continuity
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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
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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)
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1-10 ha |
Spatial Distribution of Computations
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EM Spatial Distribution
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spatially lumped (in all cases) |
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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 |
EM Structure and Computation Approach
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EM Computational Approach
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Analytic |
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EM Determinism
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deterministic |
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Statistical Estimation of EM
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Model Checking Procedures Used
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Model Calibration Reported?
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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?
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No |
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Model Uncertainty Analysis Reported?
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No |
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Model Sensitivity Analysis Reported?
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No |
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Model Sensitivity Analysis Include Interactions?
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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])
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Marine location (Classification hierarchy: Realm > Region > Province > Ecoregion)
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Centroid Lat/Long (Decimal Degree)
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Centroid Latitude
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41.32 |
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Centroid Longitude
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-72.24 |
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Centroid Datum
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WGS84 |
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Centroid Coordinates Status
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Provided |
Environments and Scales Modeled
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EM Environmental Sub-Class
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Rivers and Streams |
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Specific Environment Type
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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
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EM Organismal Scale
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Individual or population, within a species |
Taxonomic level and name of organisms or groups identified
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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
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Observed Response Variables (and Units)
em.detail.observedResponseHelp
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* |
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Computed Response Variables (and Units)
view details (6 variables)
em.detail.computedResponseHelp
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