Data dictionary for marine discrete data (English, French, CSV)

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Publisher-reported update

2026-05-05

The Department of Fisheries and Oceans (DFO) holds discrete oceanographic, biological, and chemical data collected throughout the St. Lawrence Estuary, the Gulf of St. Lawrence, and the Saguenay Fjord, as well as data gathered outside of these zones during non-routine surveys (collected by the Quebec region). These data come from samples taken at different depths in the water column (surface, bottom, and intermediate depths), mainly during annual scientific missions such as: weekly monitoring at fixed stations (Rimouski, Shediac Valley) annual multispecies surveys (Northern and Southern Gulf) spring and fall missions of the Atlantic Zone Monitoring Program This dataset presents the variables most frequently sampled for the period 1990 to two years prior to the present, namely, salinity, dissolved oxygen concentration, chlorophyll-a concentration, nutrient concentrations (nitrite, nitrate, silicate, phosphate), pH and alkalinity. These measurements are often accompanied by data from CTD profiles (Conductivity, Temperature, Depth/Pressure) and auxiliary sensors (fluorescence, turbidity, pH). Annual synthesis of the chemical and biological oceanographic conditions of the study area…

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