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2014 to 2023 data on demersal fish group richness, estimated by the number of species per 10 km x 10 km grid cell in the Estuary and Gulf of St. Lawrence. The data originates from standardized annual August and September multidisciplinary bottom trawl surveys conducted by Fisheries and Oceans Canada, with historical surveys dating back to 1971 in the southern Gulf.
Data is available under the Open Government Licence - Canada (ca-ogl-lgo). Users should consult the referenced protocol documents and annual CSAS reports for detailed survey methodology. Data is provided in ESRI REST and CSV formats.