{PAGE NAME} | {WEB AREA NAME}

EM Identity and Description

EM ID variable.detail.emIdHelp ?	EM-657
Document Author variable.detail.emDocumentAuthorHelp ?	Santolini, R, E. Morri, G. Pasini, G. Giovagnoli, C. Morolli, and G. Salmoiraghi
Document Year variable.detail.emDocumentYearHelp ?	2014

Variable General Info

Name variable.detail.varNameHelp ?	River ecosystem quality index ? Comment: The REQI is a synthesis of the five above-mentioned indicators (SHDI, IVN, W, Q, and IFm) and it is based on different aspects of riparian quality areas ranging from the composition of land-use types to the degree of vegetation naturalness and the bird community analysis as indicators of habitat conservation. REQI values, ranging between 0 and 25, are the sum of the scores of the five indicators that compose it. Scoring is a simplistic instrument for describing any ecological system, especially complex and dynamic systems such as rivers.
Variable ID variable.detail.varIdHelp ?	15403
Symbol variable.detail.varSymbolHelp ?	REQI
Qualitative-Quantitative variable.detail.continuousCategoricalHelp ?	Quantitative (Cardinal Only)
Cardinal-Ordinal variable.detail.cardinalOrdinalHelp ?	Cardinal
Units variable.detail.varUnitsHelp ?	unitless

Variable Typology

Name variable.detail.varNameHelp ?	River ecosystem quality index ? Comment: The REQI is a synthesis of the five above-mentioned indicators (SHDI, IVN, W, Q, and IFm) and it is based on different aspects of riparian quality areas ranging from the composition of land-use types to the degree of vegetation naturalness and the bird community analysis as indicators of habitat conservation. REQI values, ranging between 0 and 25, are the sum of the scores of the five indicators that compose it. Scoring is a simplistic instrument for describing any ecological system, especially complex and dynamic systems such as rivers.
Predictor-Intermediate-Response variable.detail.displayVariableTypeHelp ?	Response
Predictor Variable Type variable.detail.displayPredictorVariableTypeHelp ?	Not applicable
Response Variable Type variable.detail.resClassHelp ?	Computed Variable
Data Source/Type variable.detail.dataTypeHelp ?	Not applicable
Variable Classification Hierarchy variable.detail.vchLevel1Help ?	5. Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services
	--CICES categories: Ecosystem goods and services - or landscape-level indices of suitability to supply EGS
	----Suitability to supply regulation & maintenance services-Maintenance of conditions
	------Maintaining nursery populations and habitats

Variable Spatial Characteristics

Name variable.detail.varNameHelp ?	River ecosystem quality index ? Comment: The REQI is a synthesis of the five above-mentioned indicators (SHDI, IVN, W, Q, and IFm) and it is based on different aspects of riparian quality areas ranging from the composition of land-use types to the degree of vegetation naturalness and the bird community analysis as indicators of habitat conservation. REQI values, ranging between 0 and 25, are the sum of the scores of the five indicators that compose it. Scoring is a simplistic instrument for describing any ecological system, especially complex and dynamic systems such as rivers.
Spatial Extent Area variable.detail.spExtentHelp ?	100-1000 km^2
Spatially Distributed? variable.detail.spDistributedHelp ?	Yes
Observations Spatially Patterned? variable.detail.regularSpGrainHelp ?	Yes
Spatial Grain Type variable.detail.spGrainTypeHelp ?	area, for pixel or radial feature
Spatial Grain Size variable.detail.spGrainSizeHelp ?	500 m x 1000 m
Spatial Density variable.detail.spDensityHelp ?	Not applicable
EnviroAtlas URL variable.detail.enviroAtlasURLHelp ?

Variable Temporal Characteristics

Name variable.detail.varNameHelp ?	River ecosystem quality index ? Comment: The REQI is a synthesis of the five above-mentioned indicators (SHDI, IVN, W, Q, and IFm) and it is based on different aspects of riparian quality areas ranging from the composition of land-use types to the degree of vegetation naturalness and the bird community analysis as indicators of habitat conservation. REQI values, ranging between 0 and 25, are the sum of the scores of the five indicators that compose it. Scoring is a simplistic instrument for describing any ecological system, especially complex and dynamic systems such as rivers.
Temporal Extent variable.detail.tempExtentHelp ?	1996-2003
Temporally Distributed? variable.detail.tempDistributedHelp ?	Not applicable
Regular Temporal Grain? variable.detail.regularTempGrainHelp ?	Not applicable
Temporal Grain Size Value variable.detail.tempGrainSizeValHelp ?	Not applicable
Temporal Grain Size Units variable.detail.tempGrainSizeUnitHelp ?	Not applicable
Temporal Density variable.detail.tempDensityHelp ?	Not applicable

Variable Values

Name variable.detail.varNameHelp ?	River ecosystem quality index ? Comment: The REQI is a synthesis of the five above-mentioned indicators (SHDI, IVN, W, Q, and IFm) and it is based on different aspects of riparian quality areas ranging from the composition of land-use types to the degree of vegetation naturalness and the bird community analysis as indicators of habitat conservation. REQI values, ranging between 0 and 25, are the sum of the scores of the five indicators that compose it. Scoring is a simplistic instrument for describing any ecological system, especially complex and dynamic systems such as rivers.
Units variable.detail.estUnitHelp ?	unitless ? Comment: Mapped results of REQI values, ranging between 0 and 25, are the sum of the scores of the five indicators that compose it. Scoring is a simplistic instrument for describing any ecological system, especially complex and dynamic systems such as rivers. To represent the REQI, each of the five indicators was initially scored with its own range. Then, all results were redistributed in ranges from 1 to 5, where 5 is the best condition of all indices. Redistributed results were finally summed.
Min Value variable.detail.minEstHelp ?	0-5
Max Value variable.detail.estHelp ?	20-25
Other Value Type variable.detail.natureOtherEstHelp ?	Not applicable
Other Value variable.detail.otherEstHelp ?	Not reported

Variable Variability and Sensitivity

Name variable.detail.varNameHelp ?	River ecosystem quality index ? Comment: The REQI is a synthesis of the five above-mentioned indicators (SHDI, IVN, W, Q, and IFm) and it is based on different aspects of riparian quality areas ranging from the composition of land-use types to the degree of vegetation naturalness and the bird community analysis as indicators of habitat conservation. REQI values, ranging between 0 and 25, are the sum of the scores of the five indicators that compose it. Scoring is a simplistic instrument for describing any ecological system, especially complex and dynamic systems such as rivers.
Variability Expression Given? variable.detail.variabilityExpHelp ?	No
Variability Metric variable.detail.variabilityMetricHelp ?	None
Variability Value variable.detail.variabilityValueHelp ?	None
Variability Units	None
Resampling Used? variable.detail.bootstrappingHelp ?	Not applicable
Variability Expression Used in Modeling? variable.detail.variabilityUsedHelp ?	Not applicable

Variable Operational Validation (Response Variables only)

Name

River ecosystem quality index

Variable ID

15403

Validated?

Yes

Validation Approach (within, between, etc.)

Between-model comparison

Validation Quality (Qual/Quant)

Direct Value Comparisons

Validation Method (Stat/Deviance)

Variance Comparisons

Validation Metric

Rsquared

Validation Value

0.42-0.73

0.7-0.40

Validation Units

unitless

Use of Measured Response Data

None

US EPA