Demersal fish group richness in the Estuary and Gulf of St.Lawrence

Demersal fish group richness in the Estuary and Gulf of St.Lawrence is an open dataset from Fisheries and Oceans Canada with 4 files (CSV, ESRI REST); catalogue record updated 2026-03-24. On CanQuery you can open its CSV or Excel file as a table, filter, chart and export up to 10,000 rows as CSV and follow the original downloads. Files are available in English and French.

2014 to 2023 demersal fish group richness in the Estuary and Gulf of St.Lawrence estimated by the number of species found in each grid cell 10 km x 10 km. Input data are from the annual August and September multidisciplinary surveys. Purpose Since 1990, the Department of Fisheries and Oceans has been conducting an annual multidisciplinary survey in the Estuary and northern Gulf of St. Lawrence using a standardized protocol. In the southern Gulf of St. Lawrence, these bottom trawl surveys has been carrying out each September since 1971. These missions are an important source of information about the status of the marine ressources. The objectives of the surveys are multiple: to estimate the abundance and biomass of groundfish and invertebrates, to identify the spatial distribution and biological characteristics of these species, to monitor the biodiversity of the Estuary and Gulf and finally, to describe the environmental conditions observed in the area at the moment of the sampling. The southern Gulf surveys are realized using the following standardized protocol: Hurlbut,T. and D.Clay (eds) 1990. Protocols for Research Vessel Cruises within the Gulf Region (Demersal Fish)…

Publisher

Fisheries and Oceans Canada

Resources

4

Catalogue metadata updated

2026-03-24