Articles | Volume 18, issue 5
https://doi.org/10.5194/essd-18-3609-2026
https://doi.org/10.5194/essd-18-3609-2026
Data description article
 | 
27 May 2026
Data description article |  | 27 May 2026

Gulf of St. Lawrence and Estuary Dataset (GOSLED): a 20-year compilation of quality-controlled biogeochemical observations (2003–2023)

William A. Nesbitt, Alfonso O. Mucci, Toste Tanhua, Yves Gélinas, Jean-Éric Tremblay, Gwénaëlle Chaillou, Ludovic Pascal, Caroline Fradette, Lennart Gerke, Samuel W. Stevens, Mathilde Jutras, Marjolaine Blais, Martine Lizotte, Michel Starr, and Douglas W. R. Wallace

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Cited articles

Barber, A., Sirois, M., Chaillou, G., and Gélinas, Y.: Stable isotope analysis of dissolved organic carbon in Canada's eastern coastal waters, Limnol. Oceanogr., 62, S71–S84, https://doi.org/10.1002/lno.10666, 2017. 
Blais, M., Galbraith, P. S., Plourde, S., and Lehoux, C.: Chemical and Biological Oceanographic Conditions in the Estuary and Gulf of St. Lawrence during 2022, Fisheries and Oceans Canada, Québec Region, Maurice Lamontagne Institute, Mont-Joli, QC, 2023. 
Blais, M., Clay, S. A., Galbraith, P. S., and Starr, M.: Chemical and biological oceanographic conditions in the Gulf of St. Lawrence during 2024, Canadian Technical Report of Hydrography and Ocean Sciences, Fisheries and Oceans Canada, Québec Region, Maurice Lamontagne Institute, Mont-Joli, QC, https://doi.org/10.60825/GMBQ-JF70, 2025. 
Boissonneault, M., Pascal, L., and Guillot, P.: RQM – Données CTD de la mission concertée sur le Coriolis II (MAP2023): PLAINE, https://doi.org/10.26071/34b9-46cd-a9a9-9b63517349be, 2024. 
Cai, W.-J. and Wang, Y.: The chemistry, fluxes, and sources of carbon dioxide in the estuarine waters of the Satilla and Altamaha Rivers, Georgia, Limnol. Oceanogr., 43, 657–668, https://doi.org/10.4319/lo.1998.43.4.0657, 1998. 
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Short summary
Over the past few decades, the St. Lawrence Estuary and Gulf have shown clear trends in oxygen depletion and acidification. This data description paper brings together twenty years of measurements from the St. Lawrence Estuary, Gulf of St. Lawrence, and Saguenay Fjord, carefully performing quality control procedures on data, and makes them publicly available. The resulting dataset supports future research, monitoring, and environmental management in this sensitive marine system.
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