EcoService Models Library (ESML)
Home
Search EMs
My
EMs 
Learn about
ESML
View ESML Data Maploading
EM: Alewife derived nutrients in stream food web, Connecticut, USA (EM-672)
View EM Runs
Collapse All
Expand All
- Export Data to Spreadsheet (Free Viewers)
- View Variable Relationship Diagram (PDF)(1 pp, 80 KB, About PDF)
EM Identity and Description
EM Identification
|
EM ID
em.detail.idHelp
?
|
EM-672 |
|
EM Short Name
em.detail.shortNameHelp
?
|
Alewife nutrients in stream food web, CT, USA |
|
EM Full Name
em.detail.fullNameHelp
?
|
Alewife derived nutrients in stream food web, Connecticut, USA |
|
EM Source or Collection
em.detail.emSourceOrCollectionHelp
?
|
None |
|
EM Source Document ID
|
384 |
|
Document Author
em.detail.documentAuthorHelp
?
|
Walters, A. W., R. T. Barnes, and D. M. Post |
|
Document Year
em.detail.documentYearHelp
?
|
2009 |
|
Document Title
em.detail.sourceIdHelp
?
|
Anadromous alewives (Alosa pseudoharengus) contribute marine-derived nutrients to coastal stream food webs |
|
Document Status
em.detail.statusCategoryHelp
?
|
Peer reviewed and published |
|
Comments on Status
em.detail.commentsOnStatusHelp
?
|
Published journal manuscript |
Software and Access
| Not applicable | |
|
Contact Name
em.detail.contactNameHelp
?
|
Annika W. Walters |
|
Contact Address
|
Dept. of Ecology and Evolutionary Biology, Yale University, New Haven CT 06511 |
|
Contact Email
|
annika.walters@yale.edu |
EM Description
|
Summary Description
em.detail.summaryDescriptionHelp
?
|
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. Natural abundance stable isotope analyses indicate that this influx of marine-derived nitrogen is rapidly incorporated into the stream food web. An enriched d15N signal, indicative of a marine origin, is present at all stream trophic levels with the greatest level of enrichment coincident with the timing of the anadromous alewife spawning migration. 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." AUTHOR'S DESCRIPTION: "Here, we examine the effect of alewife-contributed marine- derived nutrients to coastal stream ecosystems in southern New England. We take a comparative approach examining streams with and without anadromous alewife runs. We use natural abundance stable isotope analyses to assess the incorporation of marine-derived nitrogen and carbon into stream food webs." |
|
Specific Policy or Decision Context Cited
em.detail.policyDecisionContextHelp
?
|
Nutrients and water quality related to anadromous alewife restoration efforts |
|
Biophysical Context
|
No additional description provided |
|
EM Scenario Drivers
em.detail.scenarioDriverHelp
?
|
No scenarios presented |
EM Relationship to Other EMs or Applications
|
Method Only, Application of Method or Model Run
em.detail.methodOrAppHelp
?
|
Method + Application (multiple runs exist) View EM Runs |
|
New or Pre-existing EM?
em.detail.newOrExistHelp
?
|
New or revised model |
Related EMs (for example, other versions or derivations of this EM) described in ESML
em.detail.relatedEmHelp
?
|
Document ID for related EM
em.detail.relatedEmDocumentIdHelp
?
|
Doc-384 | Doc-383 |
|
EM ID for related EM
em.detail.relatedEmEmIdHelp
?
|
EM-667 | EM-661 |
EM Modeling Approach
EM Relationship to Time
|
EM Temporal Extent
em.detail.tempExtentHelp
?
|
2005-2006 (March-July) |
|
EM Time Dependence
em.detail.timeDependencyHelp
?
|
time-dependent |
|
EM Time Reference (Future/Past)
em.detail.futurePastHelp
?
|
past time |
|
EM Time Continuity
em.detail.continueDiscreteHelp
?
|
other or unclear (comment) ?Comment:Sampling conducted at discrete time periods during Alewife migration. Three sampling periods are presented in this entry. |
|
EM Temporal Grain Size Value
em.detail.tempGrainSizeHelp
?
|
Not applicable |
|
EM Temporal Grain Size Unit
em.detail.tempGrainSizeUnitHelp
?
|
Not applicable |
EM Spatial Extent
|
Bounding Type
em.detail.boundingTypeHelp
?
|
Geopolitical |
|
Spatial Extent Name
em.detail.extentNameHelp
?
|
New London County, Connecticut, USA |
|
Spatial Extent Area (Magnitude)
em.detail.extentAreaHelp
?
|
1000-10,000 km^2. |
Spatial Distribution of Computations
|
EM Spatial Distribution
em.detail.distributeLumpHelp
?
|
spatially distributed (in at least some cases) |
|
Spatial Grain Type
em.detail.spGrainTypeHelp
?
|
other (specify), for irregular (e.g., stream reach, lake basin) |
|
Spatial Grain Size
em.detail.spGrainSizeHelp
?
|
variable stream lengths |
EM Structure and Computation Approach
|
EM Computational Approach
em.detail.emComputationalApproachHelp
?
|
Not applicable |
|
EM Determinism
em.detail.deterStochHelp
?
|
Not applicable |
|
Statistical Estimation of EM
em.detail.statisticalEstimationHelp
?
|
|
Model Checking Procedures Used
|
Model Calibration Reported?
em.detail.calibrationHelp
?
|
Not applicable |
|
Model Goodness of Fit Reported?
em.detail.goodnessFitHelp
?
|
Not applicable |
|
Goodness of Fit (metric| value | unit)
em.detail.goodnessFitValuesHelp
?
|
None |
|
Model Operational Validation Reported?
em.detail.validationHelp
?
|
Not applicable |
|
Model Uncertainty Analysis Reported?
em.detail.uncertaintyAnalysisHelp
?
|
Not applicable |
|
Model Sensitivity Analysis Reported?
em.detail.sensAnalysisHelp
?
|
Not applicable |
|
Model Sensitivity Analysis Include Interactions?
em.detail.interactionConsiderHelp
?
|
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
?
|
Marine location (Classification hierarchy: Realm > Region > Province > Ecoregion)
em.detail.relationToSpaceMarineHelp
?
|
Centroid Lat/Long (Decimal Degree)
|
Centroid Latitude
em.detail.ddLatHelp
?
|
41.78 |
|
Centroid Longitude
em.detail.ddLongHelp
?
|
-72.17 |
|
Centroid Datum
em.detail.datumHelp
?
|
WGS84 |
|
Centroid Coordinates Status
em.detail.coordinateStatusHelp
?
|
Estimated |
Environments and Scales Modeled
|
EM Environmental Sub-Class
em.detail.emEnvironmentalSubclassHelp
?
|
Rivers and Streams |
|
Specific Environment Type
em.detail.specificEnvTypeHelp
?
|
Coastal streams |
|
EM Ecological Scale
em.detail.ecoScaleHelp
?
|
Ecological scale corresponds to the Environmental Sub-class |
Scale and taxa of organisms modeled
Scale of differentiation of organisms modeled
em.detail.nameOfOrgsOrGroupsHelp
?
|
EM Organismal Scale
em.detail.orgScaleHelp
?
|
Individual or population, within a species |
Taxonomic level and name of organisms or groups identified
taxonomyHelp
?
|
EnviroAtlas URL
em.detail.enviroAtlasURLHelp
?
| None Available |
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
?
| None |
(Environmental Subclass > Ecological End-Product (EEP) > EEP Subclass > EEP Modifier)
fegs2Help
?
| None |
EM Variable Names (and Units)
Predictor
em.detail.variablesPredictorHelp
?
|
Driving Variables (and Units)
view details (2 variables)
em.detail.drivingVariableHelp
?
|
|
|
Constant or Factor Variables (and Units)
view details (4 variables)
em.detail.constantFactorVariableHelp
?
|
Intermediate
|
Intermediate (Computed) Variables (and Units)
em.detail.intermediateVariableHelp
?
|
None |
Response
em.detail.variablesResponseHelp
?