EcoService Models Library (ESML)
Home
Search EMs
My
EMs 
Learn about
ESML
View ESML Data Maploading
Variables Details
: (EM-661)
Back
Selected
EM-661: Nutrient loading by anadromous alewife (Alosa pseudoharengus): contemporary patterns and predictions for restoration efforts
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-661 | |
|
Document Author
variable.detail.emDocumentAuthorHelp
?
|
West, D. C., A. W. Walters, S. Gephard, and D. M. Post |
|
Document Year
variable.detail.emDocumentYearHelp
?
|
2010 |
Variable General Info
Alewife fecundity ?Comment:Estimated as a function of adult length, based on the relationship; Fa = 3596 (mm^-1) x length - 766186, derived from data in Kissil (1969) and from fish sampled in 2004 and 2005. |
Alewife testes initial mass ?Comment:Estimated as a function of length and based on the relationship; testes mass = 0.157 (g∙mm^-1) x length - 28.563; for fish captured at the entrance to Bride Lake in 2003 and 2006 (J. P. Davis, CTDEP Inland Fisheries Division, Eastern District Headquarters, Marlborough, CT, unpublished data). |
Change in alewife testes wet mass |
Phosphorus loaded into the lake by adult alewife mortality ?Comment:The mass of phosphorus loaded per fish by adult mortality (Pmort) was derived from the variables: Adult alewife mortality rate (in-lake), Adult alewife wet mass (entering lake), and Adult alewife phosphorus concentration. |
Phosphorus loaded into the lake by alewife egg and sperm ?Comment:The mass of phosphorus loaded per fish by gametes was derived from the variables; Adult alewife mortality rate (in-lake), Alewife egg wet mass, Alewife egg phosphorus concentration, Alewife fecundity, Alewife testes phosphorus concentration, and Change in alewife testes wet mass. |
Phosphorus loaded into the lake by direct excretion of adult alewives ?Comment:The mass of phosphorus loaded through direct excretion was derived from the variables; Adult alewife mortality rate (in-lake), Adult alewife wet mass (entering lake), Adult alewife excretion rate, and Adult alewife time in system. |
YOY alewife biomass density ?Comment:A mesocosm experiment was conducted to model a density dependent function that relates biomass density of young of year alewives (nYOY x massYOY) to the number of adult spawners. |
|
|
Variable ID
variable.detail.varIdHelp
?
|
15570 | 15571 | 15572 | 15569 | 15619 | 15620 | 15714 |
| Fa | Not reported | Δmasst | Pmort | Not reported | Not reported | nYOY x massYOY | |
|
Qualitative-Quantitative
variable.detail.continuousCategoricalHelp
?
|
Quantitative (Cardinal Only) | Quantitative (Cardinal Only) | Quantitative (Cardinal Only) | Quantitative (Cardinal Only) | Quantitative (Cardinal Only) | Quantitative (Cardinal Only) | Quantitative (Cardinal Only) |
|
Cardinal-Ordinal
variable.detail.cardinalOrdinalHelp
?
|
Cardinal | Cardinal | Cardinal | Cardinal | Cardinal | Cardinal | Cardinal |
| No. eggs mm fish length^-1 | g | g | g P fish^-1 | g P fish^-1 | g P fish^-1 | g m^-2 |
Variable Typology
Alewife fecundity ?Comment:Estimated as a function of adult length, based on the relationship; Fa = 3596 (mm^-1) x length - 766186, derived from data in Kissil (1969) and from fish sampled in 2004 and 2005. |
Alewife testes initial mass ?Comment:Estimated as a function of length and based on the relationship; testes mass = 0.157 (g∙mm^-1) x length - 28.563; for fish captured at the entrance to Bride Lake in 2003 and 2006 (J. P. Davis, CTDEP Inland Fisheries Division, Eastern District Headquarters, Marlborough, CT, unpublished data). |
Change in alewife testes wet mass |
Phosphorus loaded into the lake by adult alewife mortality ?Comment:The mass of phosphorus loaded per fish by adult mortality (Pmort) was derived from the variables: Adult alewife mortality rate (in-lake), Adult alewife wet mass (entering lake), and Adult alewife phosphorus concentration. |
Phosphorus loaded into the lake by alewife egg and sperm ?Comment:The mass of phosphorus loaded per fish by gametes was derived from the variables; Adult alewife mortality rate (in-lake), Alewife egg wet mass, Alewife egg phosphorus concentration, Alewife fecundity, Alewife testes phosphorus concentration, and Change in alewife testes wet mass. |
Phosphorus loaded into the lake by direct excretion of adult alewives ?Comment:The mass of phosphorus loaded through direct excretion was derived from the variables; Adult alewife mortality rate (in-lake), Adult alewife wet mass (entering lake), Adult alewife excretion rate, and Adult alewife time in system. |
YOY alewife biomass density ?Comment:A mesocosm experiment was conducted to model a density dependent function that relates biomass density of young of year alewives (nYOY x massYOY) to the number of adult spawners. |
|
|
Predictor-Intermediate-Response
variable.detail.displayVariableTypeHelp
?
|
Intermediate (Computed) Variable |
Intermediate (Computed) Variable |
Intermediate (Computed) Variable |
Intermediate (Computed) Variable |
Intermediate (Computed) Variable |
Intermediate (Computed) Variable |
Intermediate (Computed) Variable |
|
Predictor Variable Type
variable.detail.displayPredictorVariableTypeHelp
?
|
Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable |
|
Response Variable Type
variable.detail.resClassHelp
?
|
Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable |
|
Data Source/Type
variable.detail.dataTypeHelp
?
|
Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable |
|
Variable Classification Hierarchy
variable.detail.vchLevel1Help
?
|
5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services |
|
--Biological characteristics, processes or requirements of living ecosystem components |
--Biological characteristics, processes or requirements of living ecosystem components |
--Biological characteristics, processes or requirements of living ecosystem components |
--Chemical (C, N, P, sediment/particulate) characteristics of ecosystem components |
--Chemical (C, N, P, sediment/particulate) characteristics of ecosystem components |
--Chemical (C, N, P, sediment/particulate) characteristics of ecosystem components |
--Biological characteristics, processes or requirements of living ecosystem components |
|
|
----Biological characteristics, processes or requirements of fauna |
----Biological characteristics, processes or requirements of fauna |
----Biological characteristics, processes or requirements of fauna |
----Phosphorus-related characteristics of ecosystem components |
----Phosphorus-related characteristics of ecosystem components |
----Phosphorus-related characteristics of ecosystem components |
----Biological characteristics, processes or requirements of fauna |
|
|
------Fish |
------Fish |
------Fish |
------Phosphorus presence (in terrestrial ecosystem components) |
------Phosphorus presence (in terrestrial ecosystem components) |
------Phosphorus presence (in terrestrial ecosystem components) |
------Fish |
Variable Spatial Characteristics
Alewife fecundity ?Comment:Estimated as a function of adult length, based on the relationship; Fa = 3596 (mm^-1) x length - 766186, derived from data in Kissil (1969) and from fish sampled in 2004 and 2005. |
Alewife testes initial mass ?Comment:Estimated as a function of length and based on the relationship; testes mass = 0.157 (g∙mm^-1) x length - 28.563; for fish captured at the entrance to Bride Lake in 2003 and 2006 (J. P. Davis, CTDEP Inland Fisheries Division, Eastern District Headquarters, Marlborough, CT, unpublished data). |
Change in alewife testes wet mass |
Phosphorus loaded into the lake by adult alewife mortality ?Comment:The mass of phosphorus loaded per fish by adult mortality (Pmort) was derived from the variables: Adult alewife mortality rate (in-lake), Adult alewife wet mass (entering lake), and Adult alewife phosphorus concentration. |
Phosphorus loaded into the lake by alewife egg and sperm ?Comment:The mass of phosphorus loaded per fish by gametes was derived from the variables; Adult alewife mortality rate (in-lake), Alewife egg wet mass, Alewife egg phosphorus concentration, Alewife fecundity, Alewife testes phosphorus concentration, and Change in alewife testes wet mass. |
Phosphorus loaded into the lake by direct excretion of adult alewives ?Comment:The mass of phosphorus loaded through direct excretion was derived from the variables; Adult alewife mortality rate (in-lake), Adult alewife wet mass (entering lake), Adult alewife excretion rate, and Adult alewife time in system. |
YOY alewife biomass density ?Comment:A mesocosm experiment was conducted to model a density dependent function that relates biomass density of young of year alewives (nYOY x massYOY) to the number of adult spawners. |
|
|
Spatial Extent Area
variable.detail.spExtentHelp
?
|
10-100 ha | 10-100 ha | 10-100 ha | 10-100 ha | 10-100 ha | 10-100 ha | 10-100 ha |
|
Spatially Distributed?
variable.detail.spDistributedHelp
?
|
No | No | No | No | No | No | No |
|
Observations Spatially Patterned?
variable.detail.regularSpGrainHelp
?
|
Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable |
|
Spatial Grain Type
variable.detail.spGrainTypeHelp
?
|
Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable |
|
Spatial Grain Size
variable.detail.spGrainSizeHelp
?
|
Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable |
|
Spatial Density
variable.detail.spDensityHelp
?
|
Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable |
|
EnviroAtlas URL
variable.detail.enviroAtlasURLHelp
?
|
Variable Temporal Characteristics
Alewife fecundity ?Comment:Estimated as a function of adult length, based on the relationship; Fa = 3596 (mm^-1) x length - 766186, derived from data in Kissil (1969) and from fish sampled in 2004 and 2005. |
Alewife testes initial mass ?Comment:Estimated as a function of length and based on the relationship; testes mass = 0.157 (g∙mm^-1) x length - 28.563; for fish captured at the entrance to Bride Lake in 2003 and 2006 (J. P. Davis, CTDEP Inland Fisheries Division, Eastern District Headquarters, Marlborough, CT, unpublished data). |
Change in alewife testes wet mass |
Phosphorus loaded into the lake by adult alewife mortality ?Comment:The mass of phosphorus loaded per fish by adult mortality (Pmort) was derived from the variables: Adult alewife mortality rate (in-lake), Adult alewife wet mass (entering lake), and Adult alewife phosphorus concentration. |
Phosphorus loaded into the lake by alewife egg and sperm ?Comment:The mass of phosphorus loaded per fish by gametes was derived from the variables; Adult alewife mortality rate (in-lake), Alewife egg wet mass, Alewife egg phosphorus concentration, Alewife fecundity, Alewife testes phosphorus concentration, and Change in alewife testes wet mass. |
Phosphorus loaded into the lake by direct excretion of adult alewives ?Comment:The mass of phosphorus loaded through direct excretion was derived from the variables; Adult alewife mortality rate (in-lake), Adult alewife wet mass (entering lake), Adult alewife excretion rate, and Adult alewife time in system. |
YOY alewife biomass density ?Comment:A mesocosm experiment was conducted to model a density dependent function that relates biomass density of young of year alewives (nYOY x massYOY) to the number of adult spawners. |
|
|
Temporal Extent
variable.detail.tempExtentHelp
?
|
1960"s and early 2000's | 1960"s and early 2000's | 1960"s and early 2000's | 1960"s and early 2000's | 1960"s and early 2000's | 1960"s and early 2000's | 1960"s and early 2000's |
|
Temporally Distributed?
variable.detail.tempDistributedHelp
?
|
Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable |
|
Regular Temporal Grain?
variable.detail.regularTempGrainHelp
?
|
Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable |
|
Temporal Grain Size Value
variable.detail.tempGrainSizeValHelp
?
|
Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable |
|
Temporal Grain Size Units
variable.detail.tempGrainSizeUnitHelp
?
|
Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable |
|
Temporal Density
variable.detail.tempDensityHelp
?
|
Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable |
Variable Values
Alewife fecundity ?Comment:Estimated as a function of adult length, based on the relationship; Fa = 3596 (mm^-1) x length - 766186, derived from data in Kissil (1969) and from fish sampled in 2004 and 2005. |
Alewife testes initial mass ?Comment:Estimated as a function of length and based on the relationship; testes mass = 0.157 (g∙mm^-1) x length - 28.563; for fish captured at the entrance to Bride Lake in 2003 and 2006 (J. P. Davis, CTDEP Inland Fisheries Division, Eastern District Headquarters, Marlborough, CT, unpublished data). |
Change in alewife testes wet mass |
Phosphorus loaded into the lake by adult alewife mortality ?Comment:The mass of phosphorus loaded per fish by adult mortality (Pmort) was derived from the variables: Adult alewife mortality rate (in-lake), Adult alewife wet mass (entering lake), and Adult alewife phosphorus concentration. |
Phosphorus loaded into the lake by alewife egg and sperm ?Comment:The mass of phosphorus loaded per fish by gametes was derived from the variables; Adult alewife mortality rate (in-lake), Alewife egg wet mass, Alewife egg phosphorus concentration, Alewife fecundity, Alewife testes phosphorus concentration, and Change in alewife testes wet mass. |
Phosphorus loaded into the lake by direct excretion of adult alewives ?Comment:The mass of phosphorus loaded through direct excretion was derived from the variables; Adult alewife mortality rate (in-lake), Adult alewife wet mass (entering lake), Adult alewife excretion rate, and Adult alewife time in system. |
YOY alewife biomass density ?Comment:A mesocosm experiment was conducted to model a density dependent function that relates biomass density of young of year alewives (nYOY x massYOY) to the number of adult spawners. |
|
| Not reported | Not reported | Not reported | Not reported | Not reported | Not reported | Not reported | |
|
Min Value
variable.detail.minEstHelp
?
|
Not reported | Not reported | Not reported | Not reported | Not reported | Not reported | Not reported |
|
Max Value
variable.detail.estHelp
?
|
Not reported | Not reported | Not reported | Not reported | Not reported | Not reported | Not reported |
|
Other Value Type
variable.detail.natureOtherEstHelp
?
|
Not applicable | Not applicable | Single Observation or Parameter Value | Single Observation or Parameter Value | Single Observation or Parameter Value | Single Observation or Parameter Value | Not applicable |
|
Other Value
variable.detail.otherEstHelp
?
|
Not reported | Not reported | Values vary by run; view runs to see values | Values vary by run; view runs to see values | Values vary by run; view runs to see values | Values vary by run; view runs to see values | Not reported |
Variable Variability and Sensitivity
Alewife fecundity ?Comment:Estimated as a function of adult length, based on the relationship; Fa = 3596 (mm^-1) x length - 766186, derived from data in Kissil (1969) and from fish sampled in 2004 and 2005. |
Alewife testes initial mass ?Comment:Estimated as a function of length and based on the relationship; testes mass = 0.157 (g∙mm^-1) x length - 28.563; for fish captured at the entrance to Bride Lake in 2003 and 2006 (J. P. Davis, CTDEP Inland Fisheries Division, Eastern District Headquarters, Marlborough, CT, unpublished data). |
Change in alewife testes wet mass |
Phosphorus loaded into the lake by adult alewife mortality ?Comment:The mass of phosphorus loaded per fish by adult mortality (Pmort) was derived from the variables: Adult alewife mortality rate (in-lake), Adult alewife wet mass (entering lake), and Adult alewife phosphorus concentration. |
Phosphorus loaded into the lake by alewife egg and sperm ?Comment:The mass of phosphorus loaded per fish by gametes was derived from the variables; Adult alewife mortality rate (in-lake), Alewife egg wet mass, Alewife egg phosphorus concentration, Alewife fecundity, Alewife testes phosphorus concentration, and Change in alewife testes wet mass. |
Phosphorus loaded into the lake by direct excretion of adult alewives ?Comment:The mass of phosphorus loaded through direct excretion was derived from the variables; Adult alewife mortality rate (in-lake), Adult alewife wet mass (entering lake), Adult alewife excretion rate, and Adult alewife time in system. |
YOY alewife biomass density ?Comment:A mesocosm experiment was conducted to model a density dependent function that relates biomass density of young of year alewives (nYOY x massYOY) to the number of adult spawners. |
|
|
Variability Expression Given?
variable.detail.variabilityExpHelp
?
|
No | No | No | No | No | No | No |
|
Variability Metric
variable.detail.variabilityMetricHelp
?
|
None | None | None | None | None | None | None |
|
Variability Value
variable.detail.variabilityValueHelp
?
|
None | None | None | None | None | None | None |
|
Variability Units
|
None | None | None | None | None | None | None |
|
Resampling Used?
variable.detail.bootstrappingHelp
?
|
Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable |
|
Variability Expression Used in Modeling?
variable.detail.variabilityUsedHelp
?
|
Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable |
Variable Operational Validation (Response Variables only)
|
Variable ID
variable.detail.varIdHelp
?
|
|
Validated?
variable.detail.resValidatedHelp
?
|
|
Validation Approach (within, between, etc.)
variable.detail.validationApproachHelp
?
|
|
Validation Quality (Qual/Quant)
variable.detail.validationQualityHelp
?
|
|
Validation Method (Stat/Deviance)
variable.detail.validationMethodHelp
?
|
|
Validation Metric
variable.detail.validationMetricHelp
?
|
|
Validation Value
variable.detail.validationValHelp
?
|
|
Validation Units
|
|
Use of Measured Response Data
variable.detail.measuredResponseDataHelp
?
|