Parent Layer: CONTAMINANTS IN WATER & SEDIMENT

Name: Benthic Community: Quality

Display Field: RegionalUnitID

Type: Feature Layer

Geometry Type: esriGeometryPoint

Description: This data was integrated into the Overall Assessment of the State of Nearshore Waters. The general health of an ecosystem may be reflected in the benthic invertebrate community, as composition can vary from habitat conditions and human stressors. Contaminants in benthic communities can bioaccumulate or biomagnify in the food chain and become a source of contamination to other aquatic life and to humans. The benthic community is assessed through statistical analysis of survey sites using total benthos, taxon richness and evenness(Lakes Ontario and Superior) or tolerance (Lake Erie).LAKE SUPERIOR: Data is summarized by Regional Unit (points are the Regional Unit centroid); within each Regional Unit, the mean total benthos, taxon richness and evenness was calculated using the MECP stations within the Regional Unit. This was done to weight each Regional Unit equally when classifying quality.Source data is from Ontario Ministry of Environment, Conservation and Parks (MECP) Great Lakes Index Stations (2011) Network.LAKE ERIE:Benthic community quality is summarized by total benthos, taxon richness and average tolerance to disturbance of individuals at each survey station; sites with higher tolerance scores have, generally, a more tolerant benthic community. Source data is the Erie Collaborative Comprehensive Study (2004).LAKE ONTARIO: Benthic community quality summarized at each MECP or ECCC survey station in each sample year; generally, higher quality corresponds to higher total benthos, higher taxon richness and higher evenness. Source data is the Ontario Ministry of Environment, Conservation and Parks (MECP) Great Lakes Index Stations (2006, 2009, 2012) Network and Environment and Climate Change Canada's (ECCC) Great Lakes Action Plan Area of Concern and Reference Sites (2006, 2007, 2010, 2011, 2012, 2014).Low Stress: benthic community condition is functional; Moderate Stress: benthic community condition is degraded but functional; High Stress: benthic community condition is degraded and not functional

Copyright Text: Various datasets; see lake specific descriptions.

Default Visibility: true

MaxRecordCount: 1000

Supported Query Formats: JSON, geoJSON

Min Scale: 0

Max Scale: 0

Supports Advanced Queries: true

Supports Statistics: true

Has Labels: false

Can Modify Layer: true

Can Scale Symbols: false

Use Standardized Queries: true

Supports Datum Transformation: true

Extent:

XMin: 439394.4712322131
YMin: -754830.0990530364
XMax: 1617690.5485982746
YMax: 15932.390856217593
Spatial Reference: 3978  (3978)

Drawing Info:

Renderer:
Unique Value Renderer:
Field 1: BenthicCommQuality
Field 2: null
Field 3: null
Field Delimiter: ,
Default Symbol:
N/A
Default Label: null
UniqueValueInfos:
• Value: High Quality
  Label: High Quality
  Description:
  Symbol:
  
• Value: Moderate Quality
  Label: Moderate Quality
  Description:
  Symbol:
  
• Value: Low Quality
  Label: Low Quality
  Description:
  Symbol:
  
Transparency: 0
Labeling Info:

Advanced Query Capabilities:

Supports Statistics: true
Supports OrderBy: true
Supports Distinct: true
Supports Pagination: true
Supports TrueCurve: true
Supports Returning Query Extent: true
Supports Query With Distance: true
Supports Sql Expression: true
Supports Query With ResultType: false
Supports Returning Geometry Centroid: false
Supports Binning LOD: false
Supports Query With LOD Spatial Reference: false

HasZ: false

HasM: false

Has Attachments: false

HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Type ID Field: null

Fields:

• OBJECTID ( type: esriFieldTypeOID, alias: OBJECTID )
• Shape ( type: esriFieldTypeGeometry, alias: Shape )
• Latitude ( type: esriFieldTypeDouble, alias: Latitude )
• Longitude ( type: esriFieldTypeDouble, alias: Longitude )
• RegionalUnitID ( type: esriFieldTypeString, alias: Regional Unit ID, length: 5 )
• NearshoreAssessment ( type: esriFieldTypeString, alias: Nearshore Assessment, length: 20 )
• AssessmentYear ( type: esriFieldTypeString, alias: Assessment Year, length: 4 )
• AssessmentCategory ( type: esriFieldTypeString, alias: Assessment Category, length: 100 )
• BenthicCommQuality ( type: esriFieldTypeString, alias: Benthic Community Quality, length: 25 )
• TotalBenthos ( type: esriFieldTypeDouble, alias: Total Benthos (per m2) )
• TaxaRichness ( type: esriFieldTypeDouble, alias: Taxa Richness )
• Eveness ( type: esriFieldTypeDouble, alias: Eveness (Superior, Ontario) )
• SiteTolerance ( type: esriFieldTypeDouble, alias: Site Tolerance (Erie) )
• SurveySite ( type: esriFieldTypeString, alias: Survey Site, length: 20 )
• SurveyYear ( type: esriFieldTypeString, alias: Survey Year, length: 4 )
• SourceData ( type: esriFieldTypeString, alias: Source of Data, length: 150 )

Supported Operations:   Query   Query Attachments   Generate Renderer   Return Updates

  Iteminfo   Thumbnail   Metadata