Fossil diatom abundance in a lake sediment core, Bylot Island, Nunavut, Canada

This dataset presents all the fossil diatom species identified in a 109 cm-long lake sediment core from a thermokarst lake in Bylot Island, Nunavut, Canada. The core was collected in June 2015 at « Gull Lake » (also named BYL-66 in other publications) from the still-present ice cover with a 7 cm-diameter percussion corer (Aquatic Research Instruments). Slides were prepared at the Aquatic Paleoecology Laboratory of CEN for 60 samples; each cm for the upper 12 cm of the core, and then each 2 cm towards core bottom. For each sample, about 400 diatom valves were counted along transects using a light microscope at a 1000x magnification.

Data and Resources

Dataset extent

Map data © OpenStreetMap contributors
Version 1.0
Citation Pienitz, R.,Bouchard, F., Boucher, V. 2020. Fossil diatom abundance in a lake sediment core, Bylot Island, Nunavut, Canada, v. 1.0 (2015-2015). Nordicana D51, doi: 10.5885/45600CE-C0960664FE8F4038.
  • Author Name: Reinhard Pienitz
  • Author Name: Frédéric Bouchard
  • Author Name: Vincent Boucher
Temporal coverage
  • Temporal coverage start: 2015-06-01  Temporal coverage end: 2015-06-01
Spatial coverage { "coordinates": [ -79.9684, 73.1548 ], "type": "Point" }
Station cen-whapmagoostui-kuujuarapik-research-station
Variable measured
  • Variable name: Name of diatom species  Variable description: Identification of fossil diatom species present at each level (n = 60) in a lake sediment core (109 cm-long).  Variable unit: unitless
Measurement Technique
    Date published 2020-03-04
    Date modified 2020-03-04
    Status Public
    • Publisher name: Nordicana D  Publisher URL:
    • Provider name: Centre d'études Nordiques (CEN)  Provider URL: