20210929 14422800 1.0 FALSE GL_ContaminantsWaterSediment_BenthicCommunity 002 439394.471232 1617690.548598 -754830.099053 15932.390856 1 Projected GCS_North_American_1983 Linear Unit: Meter (1.000000) NAD_1983_Canada_Atlas_Lambert <ProjectedCoordinateSystem xsi:type='typens:ProjectedCoordinateSystem' xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xmlns:xs='http://www.w3.org/2001/XMLSchema' xmlns:typens='http://www.esri.com/schemas/ArcGIS/3.5.0'><WKT>PROJCS["NAD_1983_Canada_Atlas_Lambert",GEOGCS["GCS_North_American_1983",DATUM["D_North_American_1983",SPHEROID["GRS_1980",6378137.0,298.257222101]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Lambert_Conformal_Conic"],PARAMETER["False_Easting",0.0],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",-95.0],PARAMETER["Standard_Parallel_1",49.0],PARAMETER["Standard_Parallel_2",77.0],PARAMETER["Latitude_Of_Origin",49.0],UNIT["Meter",1.0],AUTHORITY["EPSG",3978]]</WKT><XOrigin>-34655800</XOrigin><YOrigin>-30001600</YOrigin><XYScale>9999.9995250255088</XYScale><ZOrigin>-100000</ZOrigin><ZScale>10000</ZScale><MOrigin>-100000</MOrigin><MScale>10000</MScale><XYTolerance>0.0010000000474974513</XYTolerance><ZTolerance>0.001</ZTolerance><MTolerance>0.001</MTolerance><HighPrecision>true</HighPrecision><WKID>3978</WKID><LatestWKID>3978</LatestWKID></ProjectedCoordinateSystem> 20260427 14131000 20260427 14131000 150000000 5000 ItemDescription North American Profile of ISO19115 2003 Esri ArcGIS 13.5.5.57366 Great Lakes Nearshore Waters: Benthic Community 1 -89.844348 -73.655010 48.956539 40.252486 <DIV STYLE="text-align:Left;font-size:12pt"><DIV><DIV>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, Superior, and Huron) 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).LAKE HURON: 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 stations within the Regional Unit. This was done to weight each Regional Unit equally when classifying quality. Source data is from ECCC Great Lakes Action Plan Area and Concern and Reference Sites Assessments (2010-2014). 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</DIV></DIV></DIV> Various datasets; see lake specific descriptions. Summary of benthic community quality at survey stations in Canadian Great Lakes nearshore waters; data is part of the Overall Assessment of the State of Nearshore Waters. Great Lakes Lake Erie Lake Ontario Lake Huron Lake Superior Nearshore Framework water quality ecosystem health cumulative stress Contaminants in Water & Sediment Benthic Community File Geodatabase Feature Class dataset EPSG 7.1(10.0.0) 0 Simple FALSE 0 TRUE FALSE GL_ContaminantsWaterSediment_BenthicCommunity Feature Class 0 OBJECTID OBJECTID OID 4 0 0 Internal feature number. Esri Sequential unique whole numbers that are automatically generated. SHAPE Shape Geometry 0 0 0 Feature geometry. Esri Coordinates defining the features. AssessmentCategory Assessment Category String 100 0 0 Latitude Latitude Double 8 0 0 RegionalUnitID Regional Unit ID String 5 0 0 NearshoreAssessment Nearshore Assessment String 255 0 0 Longitude Longitude Double 8 0 0 TotalBenthos Total Benthos (per m2) Double 8 0 0 BenthicCommQuality Benthic Community Quality String 25 0 0 AssessmentYear Assessment Year String 5 0 0 TaxaRichness Taxa Richness Double 8 0 0 Eveness Eveness (Superior, Ontario) Double 8 0 0 SiteTolerance Site Tolerance (Erie) Double 8 0 0 SurveySite Survey Site String 20 0 0 SurveyYear Survey Year String 4 0 0 SourceData Source of Data String 150 0 0 RegUnitID Regional Unit ID String 5 0 0 NumStations Number of Stations Double 8 0 0 Evenness Evenness (Superior, Ontario, Huron) Double 8 0 0 DataSource Source of Data String 150 0 0 20260427