Nordicana D51 / DOI : 10.5885/45600CE-C0960664FE8F4038

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

Reinhard Pienitz^1,3,Frédéric Bouchard^2,3, Vincent Boucher^1,3
¹Département de géographie, Université Laval
²Géosciences Paris Sud (GEOPS), Université Paris Saclay,
³Centre d'études nordiques (CEN)

Abstract

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 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.

Location map

Key references

Bouchard, F., Fortier, D., Paquette, M., Boucher, V., Pienitz, R., Laurion, I. Thermokarst lake development in syngenetic ice-wedge polygon terrain in the Eastern Canadian Arctic (Bylot Island, Nunavut). The Cryosphere Discussions. DOI: 10.5194/tc-2019-248.

Bouchard, F., R. Pienitz, J. D. Ortiz, P. Francus & I. Laurion, 2013. Palaeolimnological conditions inferred from fossil diatom assemblages and derivative spectral properties of sediments in thermokarst ponds of subarctic Quebec, Canada. Boreas, 42: 575-595. DOI: 10.1111/bor.12000.

Contributors

Fortier, Daniel (Département de géographie, Université de Montréal & Centre d'études nordiques (CEN))

Laurion, Isabelle (Centre Eau Terre Environnement, Institut national de la recherche scientifique (INRS-ETE) & Centre d'études nordiques (CEN))

Acknowledgements

Audrey Veillette (U. Montréal), Vilmantas Preskienis (INRS-ETE) and Maxime Tremblay (UQTR) collected the sediment core in the field. Vincent Boucher (U. Laval) conducted diatom species counts in the laboratory.

Nordicana D53 - Données obtenues par relevés de géoradar (GPR) au-dessus d'un lac de thermokarst, Île Bylot, Nunavut, Canada. / Ground-penetrating radar (GPR) survey data for a thermokarst lake, Bylot Island, Nunavut, Canada.

Nordicana D54 - Données de tomodensitométrie d'une carotte de sédiments lacustres, Île Bylot, Nunavut, Canada. / Computed tomography (CT) scans of a lake sediment core, Bylot Island, Nunavut, Canada.

Status

Published

Version history

You can request for data from previous versions at nordicana@cen.ulaval.ca.

Version 1.0 (2015-2015) - Updated March 4, 2020

Measurement sites

	Site	Latitude	Longitude	Altitude (m)

More info	Site BYL-66 (Gull Lake)	73.154773	-79.968448

Supplementary material

GullLake_Diatoms_Index_Columns

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