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Fisheries and Oceans Canada provides spatial distribution data on Spotted Wolffish relative occurrence from annual groundfish research surveys. The dataset aggregates catch and effort data into 100 km² cells for the Québec (1978-2008) and Gulf (1971-2008) regions. It maps the probability of catching a Spotted Wolffish per set within each cell.
License is ca-ogl-lgo (Open Government Licence - Canada). Data is provided in SHP, ESRI REST, and CSV formats, requiring GIS software for full spatial analysis. The associated publication is critical for understanding the seabed classification context.