Marine Sediment data along the Yukon Coastal Plain, Canada ...

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....

Full description

Bibliographic Details
Main Authors: Couture, Nicole, Irrgang, Anna Maria, Pollard, Wayne H, Lantuit, Hugues, Fritz, Michael
Format: Dataset
Language:English
Published: PANGAEA 2019
Subjects:
Event label
Latitude of event
Longitude of event
Sample ID
Site
Distance
DEPTH, water
Carbon, organic, total
Nitrogen, total
Carbon/Nitrogen ratio
δ13C, organic carbon
Carbon, organic, terrestrial matter
Box corer/grab
Ice
permafrost
wedge*
Yukon
Online Access:https://dx.doi.org/10.1594/pangaea.897273
https://doi.pangaea.de/10.1594/PANGAEA.897273
Description
Summary: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 ...

Similar Items