Concentration, 13C, and 14C of dissolved and ebullition methane, dissolved inorganic carbon, dissolved organic carbon, particulate organic carbon and ebullition CO2 in rivers and thermokarst lakes in Northern Quebec, Canada

The dataset includes concentration, ¹³C, and ¹⁴C measurements of dissolved inorganic carbon (DIC), dissolved organic carbon (DOC), particulate organic carbon (POC), total particulate carbon (TPC), sediment carbon and organic carbon, dissolved and ebullition methane (CH₄), and ebullition carbon dioxide (CO₂) from five lakes and three rivers in an area of sporadic permafrost degradation in Northern Quebec.

We sampled the three thaw lakes SAS2A, SAS2B, and SAS2C, located in a peatland adjacent to the Sasapimakwananisikw River (SAS2 peatland), in August 2018, August 2019, and February 2019. The other two lakes, KWK1 and KWK12, located in the once-glaciated KWK valley adjacent to the Kwakwatanikapistikw River, were sampled in August 2019 and 2019.