Data for dissolved organic matter and associated environmental variables across land–water continua of boreal catchments in Quebec [Québec, Canada, 2021-2024]

[English] This dataset contains dissolved organic carbon (DOC) concentrations and PARAFAC-derived composition from terrestrial soil water (upland, riparian) and aquatic (stream, lake) compartments across 26 headwater catchments in four regions spanning the boreal and boreal-arctic transition of Quebec, Canada (48.9-59.1°N; 63.2-76.2°W) along with associated geographic and climatic variables. Sampling campaigns took place between July and August around La Romaine River (2021), Eastmain River (2022), Peribonka River (2023) and George River (2024).

[Français] Cet ensemble de données comprend les concentrations de carbone organique dissous (COD) et la composition dérivée de l’analyse PARAFAC des eaux du sol (zones d’altitude, zones riveraines) et des milieux aquatiques (cours d’eau, lacs) de 26 bassins versants de tête répartis dans quatre régions couvrant la zone boréale et la transition boréale-arctique du Québec, au Canada (48,9-59,1°N; 63,2-76,2°O), ainsi que les variables géographiques et climatiques associées.