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EM: Invertebrate community index, Choctawhatchee-Pea Rivers watershed, Alabama (EM-850)
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EM Identity and Description
EM Identification
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EM ID
em.detail.idHelp
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EM-850 |
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EM Short Name
em.detail.shortNameHelp
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Invertebrate community index, Alabama |
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EM Full Name
em.detail.fullNameHelp
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Invertebrate community index, Choctawhatchee-Pea Rivers watershed, Alabama |
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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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409 |
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Document Author
em.detail.documentAuthorHelp
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Bennett, H.H., Mullen, M.W., Stewart, P.M., Sawyer, J.A., and E. C. Webber |
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Document Year
em.detail.documentYearHelp
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2004 |
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Document Title
em.detail.sourceIdHelp
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Development of an invertebrate community index for an Alabama coastal plain watershed |
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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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E. Cliff Webber |
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Contact Address
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Troy State University, 4004 Clairmont Avenue South, Birmingham, Alabama 35222 progress. |
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Contact Email
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hbennett1978@hotmail.com |
EM Description
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Summary Description
em.detail.summaryDescriptionHelp
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ABSTRACT: "Macroinvertebrates were collected from 49 randomly selected sites from first through sixth-order streams in the Choctawhatchee-Pea Rivers watershed and were identified to genus level. Thirty-eight candidate metrics were examined, and an invertebrate community index (ICI) was calibrated by eliminating metrics that failed to separate impaired from unimpaired streams. Each site was scored with those metrics, and narrative scores were assigned based on ICI scores. Least impacted sites scored significantly lower than sites impacted by row crop agriculture, cattle, and urban land uses. Conditions in the watershed suggest that the entire area has experienced degradation through past and current land use practices. An initial validation of the index was performed and is described. Additional evaluations of the index are in progress." |
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Specific Policy or Decision Context Cited
em.detail.policyDecisionContextHelp
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None reported |
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Biophysical Context
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1st through 6th order streams on low elevation coastal plains |
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EM Scenario Drivers
em.detail.scenarioDriverHelp
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N/A |
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 |
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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-407 |
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EM ID for related EM
em.detail.relatedEmEmIdHelp
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EM-848 |
EM Modeling Approach
EM Relationship to Time
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EM Temporal Extent
em.detail.tempExtentHelp
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2002 |
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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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Choctawhatchee-Pea rivers watershed |
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Spatial Extent Area (Magnitude)
em.detail.extentAreaHelp
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1000-10,000 km^2. |
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:Culled metrics that did not distinguish between impaired and unimpaired sites. |
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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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Yes |
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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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Yes |
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Model Sensitivity Analysis Include Interactions?
em.detail.interactionConsiderHelp
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Yes |
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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| None |
Centroid Lat/Long (Decimal Degree)
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Centroid Latitude
em.detail.ddLatHelp
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31.39 |
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Centroid Longitude
em.detail.ddLongHelp
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-85.71 |
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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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Estimated |
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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1st - 6th order streams |
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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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Other (Comment) ?Comment:To species but focused on functional group classes |
Taxonomic level and name of organisms or groups identified
taxonomyHelp
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| None Available |
EnviroAtlas URL
em.detail.enviroAtlasURLHelp
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| 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
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(Environmental Subclass > Ecological End-Product (EEP) > EEP Subclass > EEP Modifier)
fegs2Help
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| None |
EM Variable Names (and Units)
Predictor
em.detail.variablesPredictorHelp
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Driving Variables (and Units)
view details (2 variables)
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Constant or Factor Variables (and Units)
view details (3 variables)
em.detail.constantFactorVariableHelp
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Intermediate
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 (4 variables)
em.detail.computedResponseHelp
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