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December 2024 data from four regional annual multispecies trawl surveys in the Northwest Atlantic, used to characterize mesoscale biological assemblages. The analysis identified 3 to 6 predominant assemblage types per region, with indicator analyses selecting 3–34 emblematic taxa for each type. Random forest models predicted assemblage distributions from environmental covariates with high accuracy (AUC > 0.95).
Data is available in multiple formats including CSV and ESRI REST; users should verify the required format for their analysis. The dataset is published under the Canadian Open Government License.