search
Include:
The following results are related to Canada. Are you interested to view more results? Visit OpenAIRE - Explore.
2 Research products, page 1 of 1

  • Canada
  • Research data
  • Dataset
  • Other dataset type
  • European Commission
  • EC|H2020
  • Nunataryuk

Relevance
arrow_drop_down
  • Open Access English
    Authors: 
    Couture, Nicole; Irrgang, Anna Maria; Pollard, Wayne H; Lantuit, Hugues; Fritz, Michael;
    Publisher: PANGAEA
    Project: NSERC , EC | Nunataryuk (773421)

    Narrowing uncertainties about carbon cycling is important in the Arctic where rapid environmental changes contribute to enhanced mobilization of carbon. Here we quantify soil organic carbon (SOC) contents of permafrost soils along the Yukon Coastal Plain and determine the annual fluxes from erosion. Different terrain units are assessed based on surficial geology, morphology, and ground ice conditions. To account for the volume of wedge ice and massive ice in a unit, sample SOC contents are reduced by 19% and sediment contents by 16%. The SOC content in a 1 m**2 column of soil varies according to the height of the bluff, ranging from 30 to 662 kg, with a mean value of 183 kg. Forty-four per cent of the SOC is within the top 1 m of soil and values vary based on surficial materials, ranging from 30 to 53 kg C/m**3, with a mean of 41 kg. Eighty per cent of the shoreline is erosive with a mean annual rate of change is 0.7 m/a. This results in a SOC flux per meter of shoreline of 131 kg C/m/a, and a total flux for the entire Yukon coast of 35.5 10**6 kg C/a (0.036 Tg C/a). The mean flux of sediment per meter of shoreline is 5.3 10**3 kg/m/a, with a total flux of 1,832.0 10**6 kg/a (1.832 Tg/a). Sedimentation rates indicate that approximately 13% of the eroded carbon is sequestered in nearshore sediments, where the overwhelming majority of organic carbon is of terrestrial origin. Supplement to: Couture, Nicole; Irrgang, Anna Maria; Pollard, Wayne H; Lantuit, Hugues; Fritz, Michael (2018): Coastal Erosion of Permafrost Soils Along the Yukon Coastal Plain and Fluxes of Organic Carbon to the Canadian Beaufort Sea. Journal of Geophysical Research: Biogeosciences

  • Authors: 
    Jensen, Anders Dalhoff Bruhn; Stedmon, Colin;
    Publisher: Technical University of Denmark
    Project: NSERC , EC | Nunataryuk (773421)

    The data has been generated from a chemostat experiment performed in June 2019. The data contain bacterial (bacterial abundance, bacterial community composition) spectral (absorbance and fluorescence) and chemical data (nutrients, dissolved organic carbon, total dissolved nitrogen). The data has been used in the published article "Terrestrial dissolved organic matter mobilized from eroding permafrost controls microbial community composition and growth in Arctic coastal waters" by Bruhn et al. 2021."Explanation of filename (e.g. FLU1C01):1. First three letters (FLU, LAC, MOR) relates to the glacial deposit type.2. The following number refers to chemostat replicate within each deposit type (1,2,3,4)3. The letter C or M between the numbers refers to Culture or Medium (the two components of a classic chemostat setup)4. The last number refers to the day of sampling, but from the start the FLU chemostats (FLU was started day0, MOR was started day1, LAC was started day2)The spectral data is saved as .dat files and can be opened with MatLab. I recommend downloading DrEEM toolbox to explore the dataset. DrEEM toolbox can be downloaded from the website http://dreem.openfluor.org/.The rest of the data (bacterial and chemical) is saved in excel files.If anything is missing, do not hestitate to write me on my email: adbj@aqua.dtu.dkGreetings,Anders Dalhoff Bruhn

search
Include:
The following results are related to Canada. Are you interested to view more results? Visit OpenAIRE - Explore.
2 Research products, page 1 of 1
  • Open Access English
    Authors: 
    Couture, Nicole; Irrgang, Anna Maria; Pollard, Wayne H; Lantuit, Hugues; Fritz, Michael;
    Publisher: PANGAEA
    Project: NSERC , EC | Nunataryuk (773421)

    Narrowing uncertainties about carbon cycling is important in the Arctic where rapid environmental changes contribute to enhanced mobilization of carbon. Here we quantify soil organic carbon (SOC) contents of permafrost soils along the Yukon Coastal Plain and determine the annual fluxes from erosion. Different terrain units are assessed based on surficial geology, morphology, and ground ice conditions. To account for the volume of wedge ice and massive ice in a unit, sample SOC contents are reduced by 19% and sediment contents by 16%. The SOC content in a 1 m**2 column of soil varies according to the height of the bluff, ranging from 30 to 662 kg, with a mean value of 183 kg. Forty-four per cent of the SOC is within the top 1 m of soil and values vary based on surficial materials, ranging from 30 to 53 kg C/m**3, with a mean of 41 kg. Eighty per cent of the shoreline is erosive with a mean annual rate of change is 0.7 m/a. This results in a SOC flux per meter of shoreline of 131 kg C/m/a, and a total flux for the entire Yukon coast of 35.5 10**6 kg C/a (0.036 Tg C/a). The mean flux of sediment per meter of shoreline is 5.3 10**3 kg/m/a, with a total flux of 1,832.0 10**6 kg/a (1.832 Tg/a). Sedimentation rates indicate that approximately 13% of the eroded carbon is sequestered in nearshore sediments, where the overwhelming majority of organic carbon is of terrestrial origin. Supplement to: Couture, Nicole; Irrgang, Anna Maria; Pollard, Wayne H; Lantuit, Hugues; Fritz, Michael (2018): Coastal Erosion of Permafrost Soils Along the Yukon Coastal Plain and Fluxes of Organic Carbon to the Canadian Beaufort Sea. Journal of Geophysical Research: Biogeosciences

  • Authors: 
    Jensen, Anders Dalhoff Bruhn; Stedmon, Colin;
    Publisher: Technical University of Denmark
    Project: NSERC , EC | Nunataryuk (773421)

    The data has been generated from a chemostat experiment performed in June 2019. The data contain bacterial (bacterial abundance, bacterial community composition) spectral (absorbance and fluorescence) and chemical data (nutrients, dissolved organic carbon, total dissolved nitrogen). The data has been used in the published article "Terrestrial dissolved organic matter mobilized from eroding permafrost controls microbial community composition and growth in Arctic coastal waters" by Bruhn et al. 2021."Explanation of filename (e.g. FLU1C01):1. First three letters (FLU, LAC, MOR) relates to the glacial deposit type.2. The following number refers to chemostat replicate within each deposit type (1,2,3,4)3. The letter C or M between the numbers refers to Culture or Medium (the two components of a classic chemostat setup)4. The last number refers to the day of sampling, but from the start the FLU chemostats (FLU was started day0, MOR was started day1, LAC was started day2)The spectral data is saved as .dat files and can be opened with MatLab. I recommend downloading DrEEM toolbox to explore the dataset. DrEEM toolbox can be downloaded from the website http://dreem.openfluor.org/.The rest of the data (bacterial and chemical) is saved in excel files.If anything is missing, do not hestitate to write me on my email: adbj@aqua.dtu.dkGreetings,Anders Dalhoff Bruhn