{PAGE NAME} | {WEB AREA NAME}

EM Identity and Description

EM Identification (* Note that run information is shown only where run data differ from the "parent" entry shown at left)

EM ID em.detail.idHelp ?	EM-667	2005 Alewife spawning migration	2006 Alewife spawning migration	2007 Alewife spawning migration
EM Short Name em.detail.shortNameHelp ?	Alewife derived nutrients, Connecticut, 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 (* Note that run information is shown only where run data differ from the "parent" entry shown at left)

EM ID em.detail.idHelp ?	EM-667	2005 Alewife spawning migration	2006 Alewife spawning migration	2007 Alewife spawning migration
EM Software Access info Exit em.detail.modelAccessInformationHelp ?	Not applicable	*	*	*
Contact Name em.detail.contactNameHelp ?	Annika W. Walters	*	*	*
Contact Address	Dept. of Ecology and Evolutionary Biology, Yale University, New Haven, CT 06511, USA	*	*	*
Contact Email	annika.walters@yale.edu	*	*	*

EM Description (* Note that run information is shown only where run data differ from the "parent" entry shown at left)

EM ID em.detail.idHelp ?	EM-667	2005 Alewife spawning migration	2006 Alewife spawning migration	2007 Alewife spawning migration
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... 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."	*	*	*
Specific Policy or Decision Context Cited em.detail.policyDecisionContextHelp ?	None identified	*	*	*
Biophysical Context	Alewife spawning runs typically occur Mid March - May.	*	*	*
EM Scenario Drivers em.detail.scenarioDriverHelp ?	No scenarios presented	*	*	*

EM Relationship to Other EMs or Applications

EM ID em.detail.idHelp ?	EM-667	2005 Alewife spawning migration	2006 Alewife spawning migration	2007 Alewife spawning migration
Method Only, Application of Method or Model Run em.detail.methodOrAppHelp ?	Method + Application (multiple runs exist)	Model Run Associated with a Specific EM Application	Model Run Associated with a Specific EM Application	Model Run Associated with a Specific EM Application
New or Pre-existing EM? em.detail.newOrExistHelp ?	New or revised model	2005 Alewife spawning migration	2006 Alewife spawning migration	2007 Alewife spawning migration

Related EMs (for example, other versions or derivations of this EM) described in ESML

EM ID em.detail.idHelp ?	EM-667	2005 Alewife spawning migration	2006 Alewife spawning migration	2007 Alewife spawning migration
Document ID for related EM em.detail.relatedEmDocumentIdHelp ?	Doc-383	Doc-383	Doc-383	Doc-383
EM ID for related EM em.detail.relatedEmEmIdHelp ?	EM-661 \| EM-665 \| EM-666 \| EM-672 \| EM-674 \| EM-673	None	None	None

EM Modeling Approach

EM Relationship to Time (* Note that run information is shown only where run data differ from the "parent" entry shown at left)

EM ID em.detail.idHelp ?	EM-667	2005 Alewife spawning migration	2006 Alewife spawning migration	2007 Alewife spawning migration
EM Temporal Extent em.detail.tempExtentHelp ?	1979-2009	*	*	*
EM Time Dependence em.detail.timeDependencyHelp ?	time-stationary	*	*	*
EM Time Reference (Future/Past) em.detail.futurePastHelp ?	Not applicable	*	*	*
EM Time Continuity em.detail.continueDiscreteHelp ?	Not applicable	*	*	*
EM Temporal Grain Size Value em.detail.tempGrainSizeHelp ?	Not applicable	*	*	*
EM Temporal Grain Size Unit em.detail.tempGrainSizeUnitHelp ?	Not applicable	*	*	*

EM spatial extent (* Note that run information is shown only where run data differ from the "parent" entry shown at left)

EM ID em.detail.idHelp ?	EM-667	2005 Alewife spawning migration	2006 Alewife spawning migration	2007 Alewife spawning migration
Bounding Type em.detail.boundingTypeHelp ?	Watershed/Catchment/HUC	*	*	*
Spatial Extent Name em.detail.extentNameHelp ?	Bride Brook	*	*	*
Spatial Extent Area (Magnitude) em.detail.extentAreaHelp ?	1-10 ha	*	*	*

Spatial Distribution of Computations (* Note that run information is shown only where run data differ from the "parent" entry shown at left)

EM ID em.detail.idHelp ?	EM-667	2005 Alewife spawning migration	2006 Alewife spawning migration	2007 Alewife spawning migration
EM Spatial Distribution em.detail.distributeLumpHelp ?	spatially lumped (in all cases)	*	*	*
Spatial Grain Type em.detail.spGrainTypeHelp ?	Not applicable	*	*	*
Spatial Grain Size em.detail.spGrainSizeHelp ?	Not applicable	*	*	*

EM Structure and Computation Approach (* Note that run information is shown only where run data differ from the "parent" entry shown at left)

EM ID em.detail.idHelp ?	EM-667	2005 Alewife spawning migration	2006 Alewife spawning migration	2007 Alewife spawning migration
EM Computational Approach em.detail.emComputationalApproachHelp ?	Analytic	*	*	*
EM Determinism em.detail.deterStochHelp ?	deterministic	*	*	*
Statistical Estimation of EM em.detail.statisticalEstimationHelp ?	Conventional (frequentist) statistics	*	*	*

Model Checking Procedures Used (* Note that run information is shown only where run data differ from the "parent" entry shown at left)

EM ID em.detail.idHelp ?	EM-667	2005 Alewife spawning migration	2006 Alewife spawning migration	2007 Alewife spawning migration
Model Calibration Reported? em.detail.calibrationHelp ?	Yes ? Comment: The fish counter (for alewife numbers) was calibrated.	* ? Comment: The fish counter (for alewife numbers) was calibrated.	* ? Comment: The fish counter (for alewife numbers) was calibrated.	* ? Comment: The fish counter (for alewife numbers) was calibrated.
Model Goodness of Fit Reported? em.detail.goodnessFitHelp ?	No	*	*	*
Goodness of Fit (metric\| value \| unit) em.detail.goodnessFitValuesHelp ?	None	*	*	*
Model Operational Validation Reported? em.detail.validationHelp ?	No	*	*	*
Model Uncertainty Analysis Reported? em.detail.uncertaintyAnalysisHelp ?	No	*	*	*
Model Sensitivity Analysis Reported? em.detail.sensAnalysisHelp ?	No	*	*	*
Model Sensitivity Analysis Include Interactions? em.detail.interactionConsiderHelp ?	Not applicable	*	*	*

EM Locations, Environments, Ecology

Location of EM Application (* Note that run information is shown only where run data differ from the "parent" entry shown at left)

Terrestrial location (Classification hierarchy: Continent > Country > U.S. State [United States only])

EM-667	2005 Alewife spawning migration	2006 Alewife spawning migration	2007 Alewife spawning migration
North America United States Connecticut	*	*	*

Marine location (Classification hierarchy: Realm > Region > Province > Ecoregion)

EM-667	2005 Alewife spawning migration	2006 Alewife spawning migration	2007 Alewife spawning migration
Temperate North Atlantic Northwest Atlantic Cold Temperate Northwest Atlantic Virginian	*	*	*

Centroid Lat/Long (Decimal Degree)

EM ID em.detail.idHelp ?	EM-667	2005 Alewife spawning migration	2006 Alewife spawning migration	2007 Alewife spawning migration
Centroid Latitude em.detail.ddLatHelp ?	41.32	*	*	*
Centroid Longitude em.detail.ddLongHelp ?	-72.24	*	*	*
Centroid Datum em.detail.datumHelp ?	WGS84	*	*	*
Centroid Coordinates Status em.detail.coordinateStatusHelp ?	Provided	*	*	*

Environments and Scales Modeled (* Note that run information is shown only where run data differ from the "parent" entry shown at left)

EM ID em.detail.idHelp ?	EM-667	2005 Alewife spawning migration	2006 Alewife spawning migration	2007 Alewife spawning migration
EM Environmental Sub-Class em.detail.emEnvironmentalSubclassHelp ?	Rivers and Streams	*	*	*
Specific Environment Type em.detail.specificEnvTypeHelp ?	Coastal stream	*	*	*
EM Ecological Scale em.detail.ecoScaleHelp ?	Ecological scale corresponds to the Environmental Sub-class	*	*	*

Organisms modeled (* Note that run information is shown only where run data differ from the "parent" entry shown at left)

Scale of differentiation of organisms modeled

EM ID em.detail.idHelp ?	EM-667	2005 Alewife spawning migration	2006 Alewife spawning migration	2007 Alewife spawning migration
EM Organismal Scale em.detail.orgScaleHelp ?	Individual or population, within a species	*	*	*

Taxonomic level and name of organisms or groups identified

EM-667	2005 Alewife spawning migration	2006 Alewife spawning migration	2007 Alewife spawning migration
Species alewife Alosa pseudoharengus	*	*	*

EnviroAtlas URL

EM-667	2005 Alewife spawning migration	2006 Alewife spawning migration	2007 Alewife spawning migration
The National Hydrography Dataset (NHD)	The National Hydrography Dataset (NHD)	The National Hydrography Dataset (NHD)	The National Hydrography Dataset (NHD)

EM Ecosystem Goods and Services (EGS) potentially modeled, by classification system

* Note that run information is shown only where run data differ from the "parent" entry shown at left

CICES v 4.3 - Common International Classification of Ecosystem Services (Section > Division > Group > Class)

EM-667	2005 Alewife spawning migration	2006 Alewife spawning migration	2007 Alewife spawning migration
None	*	*	*

National Ecosystem Services Classification System (NESCS) Plus

(Environmental Subclass > Ecological End-Product (EEP) > EEP Subclass > EEP Modifier)

EM-667	2005 Alewife spawning migration	2006 Alewife spawning migration	2007 Alewife spawning migration
Rivers and Streams (111) Composite (8) Presence of environmental class/subclass Quality Indicator	*	*	*

EM Variable Names (and Units)

* Note that for runs, variable name is displayed only where data for that variable differed by run AND those differences were reported in the source document. Where differences occurred but were not reported, the variable is not listed. Click on variable name to view details.

To view run information for variables, select any variable below or view run data for all variables.

Predictor

EM ID em.detail.idHelp ?	EM-667	2005 Alewife spawning migration	2006 Alewife spawning migration	2007 Alewife spawning migration
Driving Variables (and Units) em.detail.drivingVariableHelp ?	None	*	*	*
Constant or Factor Variables (and Units) em.detail.constantFactorVariableHelp ?	Alewife average weight (g) Alewife mortality (in stream) (%) Alewife nitrogen excretion rate (g N fish^-1 hr^-1) Alewife numbers (ind.) Alewife phosphorus excretion rate (g P fish^-1 hr^-1) Alewife swimming rate (m sec^-1) Duration of Alewife run (days) Percent nitrogen of Alewife wet mass (%) Percent phosphorus of Alewife wet mass (%) Stream length (m)	Alewife numbers (ind.) Duration of Alewife run (days)	Alewife numbers (ind.) Duration of Alewife run (days)	Alewife numbers (ind.) Duration of Alewife run (days)

Intermediate

EM ID em.detail.idHelp ?	EM-667	2005 Alewife spawning migration	2006 Alewife spawning migration	2007 Alewife spawning migration
Intermediate (Computed) Variables (and Units) em.detail.intermediateVariableHelp ?	Alewife in stream residence time (hr) Alewife nitrogen content (g N fish^-1) Alewife phosphorus content (g P fish^-1)	Alewife nitrogen content (g N fish^-1) Alewife phosphorus content (g P fish^-1)	Alewife nitrogen content (g N fish^-1) Alewife phosphorus content (g P fish^-1)	Alewife nitrogen content (g N fish^-1) Alewife phosphorus content (g P fish^-1)

Response

EM ID em.detail.idHelp ?	EM-667	2005 Alewife spawning migration	2006 Alewife spawning migration	2007 Alewife spawning migration
Observed Response Variables (and Units) em.detail.observedResponseHelp ?	None	*	*	*
Computed Response Variables (and Units) em.detail.computedResponseHelp ?	Total daily Alewife nitrogen input (g N day^-1) Total daily Alewife phosphorus input (g P day^-1) Total nitrogen input from Alewife carcasses (g N) Total nitrogen input from Alewife excretion (g N) Total phosphorus input from Alewife carcasses (g P) Total phosphorus input from Alewife excretion (g P)	Total daily Alewife nitrogen input (g N day^-1) Total daily Alewife phosphorus input (g P day^-1) Total nitrogen input from Alewife carcasses (g N) Total nitrogen input from Alewife excretion (g N) Total phosphorus input from Alewife carcasses (g P) Total phosphorus input from Alewife excretion (g P)	Total daily Alewife nitrogen input (g N day^-1) Total daily Alewife phosphorus input (g P day^-1) Total nitrogen input from Alewife carcasses (g N) Total nitrogen input from Alewife excretion (g N) Total phosphorus input from Alewife carcasses (g P) Total phosphorus input from Alewife excretion (g P)	Total daily Alewife nitrogen input (g N day^-1) Total daily Alewife phosphorus input (g P day^-1) Total nitrogen input from Alewife carcasses (g N) Total nitrogen input from Alewife excretion (g N) Total phosphorus input from Alewife carcasses (g P) Total phosphorus input from Alewife excretion (g P)

US EPA

EcoService Models Library (ESML)

View Runs

: Alewife derived nutrients in stream food web, Connecticut, USA (EM-667)

EM Identity and Description

Related EMs (for example, other versions or derivations of this EM) described in ESML

EM Modeling Approach

Comment:

Comment:

Comment:

Comment:

EM Locations, Environments, Ecology

Terrestrial location (Classification hierarchy: Continent > Country > U.S. State [United States only])

Marine location (Classification hierarchy: Realm > Region > Province > Ecoregion)

Centroid Lat/Long (Decimal Degree)

Scale of differentiation of organisms modeled

Taxonomic level and name of organisms or groups identified

EnviroAtlas URL

EM Ecosystem Goods and Services (EGS) potentially modeled, by classification system

* Note that run information is shown only where run data differ from the "parent" entry shown at left

CICES v 4.3 - Common International Classification of Ecosystem Services (Section > Division > Group > Class)

National Ecosystem Services Classification System (NESCS) Plus

(Environmental Subclass > Ecological End-Product (EEP) > EEP Subclass > EEP Modifier)

EM Variable Names (and Units)

* Note that for runs, variable name is displayed only where data for that variable differed by run AND those differences were reported in the source document. Where differences occurred but were not reported, the variable is not listed. Click on variable name to view details.

Predictor

Intermediate

Response