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D78 10.5885/45660CE-8B92339884C146D0 Published
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Dissolved methane, carbon dioxide and limnological data from subarctic rivers, northern Québec, Canada

Alex Matveev1, 2, Marie-Amélie Blais1, 2, Isabelle Laurion1, 3, Warwick F. Vincent1, 2

1 Centre d'études nordiques (CEN)
2 Université Laval
3 INRS

Abstract

Subarctic rivers of northern Québec (Nunavik, Canada) unveil a potential pathway for waterborne release of greenhouse gases generated through mobilization of organic matter in the large ambient reservoir of permafrost carbon (see e.g. Nordicana D48). In the warming Arctic, this contribution may substantially alter the current parameterization of global carbon balance and the corresponding climate feedbacks. This Nordicana D archive presents the concentrations of dissolved greenhouse gases (methane, carbon dioxide, and nitrous oxide) that were measured in water sampled in the Great Whale River (GWR), Sasapimakwananisikw (SAS) River, the Sheldrake River, and their major tributaries, in summer and winter (GWR). Additional data are presented for dissolved oxygen concentration, temperature, pH, salinity, turbidity, and conductivity. The concentrations of the dissolved greenhouse gases were determined by (1) gas chromatography of gas samples extracted by headspace equilibration in a 2L flask (details in Matveev et al 2019), and (2) direct measurement with methane and carbon dioxide profilers (METS) by Franatech GmbH (details in Matveev et al 2018). The water column values of dissolved oxygen concentration, temperature, pH, salinity, turbidity and conductivity were determined with either Hydrolab DS5, RBR Concerto, and/or YSI EXO2 profilers.

Data citation

Matveev, A., Blais, M.A., Laurion, I., Vincent, W.F. 2024. Dissolved methane, carbon dioxide and limnological data from subarctic rivers, northern Québec, Canada, v. 1.1.0. Nordicana D78, doi: 10.5885/45660CE-8B92339884C146D0.

Location map

Key references

  • Blais, M.-A., Matveev, A., Lovejoy, C., and Vincent, W. F. (2022). Size-fractionated microbiome structure in subarctic rivers and a coastal plume across DOC and salinity gradients. Front. Microbiol. 12, 760282.
    DOI: 10.3389/fmicb.2021.760282

Contributors

Fonseca Coelho, Lígia MIT Portugal, Bioengineering Gonzalez Moguel, Regina McGill University, Earth and Planetary Sciences Vieira, Gonçalo CEN & Centro de Estudos Geográficos, IGOT - Universidade de Lisboa Freitas, Pedro Centro de Estudos Geográficos, IGOT - Universidade de Lisboa Bansept, Marc-Antoine Université Laval, Department of Biochemistry, Microbiology and Bioinformatics

Version history

You can request an older version by contacting nordicana@cen.ulaval.ca

Measurement sites

Site Latitude Longitude Altitude (m)
GWR 55.265386 -77.792062 0 More info
Rivière SAS / SAS River 55.257226 -77.810517 0 More info
SHK 56.63 -76.535 0 More info
Plume GWR/baie d'Hudson 55.268972 -77.817528 0 More info

Download

Data available for download are in ZIP format. Please properly cite the data when using it.

Sasapimakwananisikw (SAS) river data Get file
File: ds_000630113.zip Size: 97.01 KB
Sites
Rivière SAS / SAS River
Data
Methane 08/2019 – 08/2019
Oxygen (LDO, %) 08/2019 – 08/2019
Dissolved oxygen 08/2019 – 08/2019
pH 08/2019 – 08/2019
Carbon dioxide 08/2019 – 08/2019
Nitrous oxide 08/2019 – 08/2019
Conductivity 08/2019 – 08/2019
Temperature 08/2019 – 08/2019
Salinity 08/2019 – 08/2019
LDO: Dissolved oxygen 08/2019 – 08/2019
Data from the Great Whale River (GWR) Get file
File: ds_000630117.zip Size: 2.66 KB
Sites
GWR
Data
Methane 08/2019 – 08/2019
Oxygen (LDO, %) 08/2019 – 08/2019
Dissolved oxygen 08/2019 – 08/2019
pH 08/2019 – 08/2019
Salinity 08/2019 – 08/2019
Carbon dioxide 08/2019 – 08/2019
Temperature 08/2019 – 08/2019
Conductivity 08/2019 – 08/2019
Nitrous oxide 08/2019 – 08/2019
LDO: Dissolved oxygen 08/2019 – 08/2019
Sheldrake River data Get file
File: ds_000630121.zip Size: 772 B
Sites
SHK
Data
Methane 08/2019 – 08/2019
Carbon dioxide 08/2019 – 08/2019
Concentrations of dissolved methane and carbon dioxide in the winter ice and under the ice in the water column of the Great Whale River and its estuary/plume into Hudson Bay. Get file
File: ds_000630214.zip Size: 1.56 KB
Sites
GWR Plume GWR/baie d'Hudson
Data
Methane 02/2019 – 03/2019
Dissolved oxygen 02/2019 – 03/2019
Conductivity 02/2019 – 03/2019
Carbon dioxide 02/2019 – 03/2019